Vortec vs bowtie heads. Dec 7, 2010 · The Vortec is a far better head.

Vortec vs bowtie heads. Small-Block Cylinder Heads - Small-Port Vortec Bowtie $607.

The heads provide outstanding low-lift flow numbers (the more air you flow, the more potential power) and Fast Burn performance all in an affordable, cast-iron head. 500 OEM valve job and shape Jan 14, 2008 · I also have the same treatment on my fastburn heads. They are made of 356-T6 aluminum with huge, raised intake ports, larger valves, smaller combustion chambers and two additional head bolts for increased clamping force. Re: L48 Project: Ported Chevy 450 heads vs. 3L V6 block. EQ “Lightning” Vortec Style Cylinder Heads (Cast Iron) On the non-bow tie L31 Vortec heads, the ports are larger than the older cast steel heads, so they outflow the older heads. 76 $1,475. The Bowtie vortecs are even better. 80: S-D modified Vortec head w/ Z28 spring: SD-8060A2: Scoggin-Dickey: $445. 600 Ported by Meaux Racing Heads 55CC Chambers Oct 18, 2017 · Question: I found a dirt track guy that has an intake/head setup for $200. And any gm head except bowtie. Do not use standard small-block . 94 or 2. Vortec Bowtie cylinder heads come with large valves, a thick deck surface and 66-cc combustion chambers. Dec 18, 2015 · #1: GM Vortec heads --> Pros: GM quality control, $316 a piece (assembled), flow pretty good Cons: Not machined for screw-in studs or guideplates & need machined for over . Shop Cylinder Heads at Summit Racing. 6:1) compared with the other heads; this was the only head tested with a 76cc combustion chamber, while the rest Jun 21, 2007 · Praise Google. Can someone tell me the NGK part number for these heads also they need to be short plugs to clear my headers? The plugs I have been using are autolite AR133. 5 to 1 dished pistons that come stock in the 260/290 HP crate engines. Dec 26, 2023 · 305 Vortec Heads vs 350 Vortec Heads (Flow Data) - YouTube. A stock Vortec head will make 40+ more horsepower. 64-81 Seat Belt Floor Pan Mounting Attachment Bolts Bow Tie Head Marking Hardtop. I know you need a different intake w/the Vortec heads but if you add up the price is the same for a set of aluminum Oct 25, 2005 · Here’s how this works using the GM Performance Parts Vortec iron cylinder head. While 906 and 062 Vortec Heads share some similarities, there are also some notable differences. If you want a standard port and intake patern head that can be modded and ported to work like a vortec head, use the Sep 14, 2018 · 10051103 - BOW TIE INTAKE MANIFOLD (RAISED RUNNER) The intake runners in this aluminum intake manifold are raised . 6 exhaust. Small-Block Cylinder Heads - Small-Port Vortec Bowtie $607. I was mistaken. 030x3. If noone is sure about the port comparison between vortec & non, I will try to stop by A. 530" lift stock and have screw in studs and flow much better on the exhaust than the stock L31's. I'm currently using, Autolite Platinum AP 104 plugs. Bowtie ports are small with really thick walls so a head porter has a lot to work with, but it takes A LOT of grinding to get good flow #'s from them. 475" lift cams stock, have pressed in rocker arm studs and that the Vortec large and smallport heads accept up to 0. The port on the right will match the Edelbrock 2925 Super Victor intake manifold, which uses the Fel Pro 1206 gasket. i found this out on my Nova- when i built the motor, i didn't know that the vortec heads had taller intake ports but since they were drilled for the old pattern along with the new pattern, i got an RPM q jet intake for a regular small block. Mar 1, 2020 · The iron Bowtie, unless it has been fairly skillfully ported, doesn't flow as good as a stock Vortec head. 10106178: 1990 LT 350ci V-8. 5 to 1 which I could live with. 94-inch intake valves (2. A set of Vortecs will not be far behind if not better than either of them. gmperformanceparts. 5 CL SBC370cid 621 HP - Sled Pulling June 9th , 2007 4. Used on LT5, Corvette ZR1. 91 $3. 13- . Not Available. These plugs use a . What’s Included: 185cc intake ports Jul 4, 2016 · Re: L48 Project: Ported Chevy 450 heads vs. The 059 head has a swirl vane cast into the port. If they are high dollar platinums, don't cheap out and buy the $1. 2003-2009 heads use a 8-bolt MPFI intake manifold. Mar 5, 1999 · Vortec heads were designed based on the 1996 Caprice 9C1/Impala SS LT1 cast-iron head castings. 480 lift i did the above mentioned mod. 200" Intake / Exhaust. 16 compared to typical gen 1 <camels> heads The GMPP Bowtie vortecs are raised an additional . Bowtie vortec he Post by mag2555 » Tue Jul 05, 2016 11:02 am If you only have . 07 higher than the 062 depending on large or small port version Sep 1, 2020 · In this video I compare Blueprint Muscle Series H8002K aluminum cylinder heads to General Motors small-port Bowtie Vortec iron cylinder heads. They require the use of a Vortec-style intake and self-aligning rocker arms, and come Apr 13, 2015 · The L31 Vortec heads have larger ports than the older Gen I cast steel heads, so they outflow the older heads. Cast-iron Vortec Cylinder Head Assembly • Completely assembled with 1. Aug 12, 2007 · I'm looking for a good spark plug for my engine. Valve Covers For Vortec Heads 12355350 GM Chrome With Red Bow Tie In Center 24502540 Valve Cover Adapter, converts center bolt to parameter bolt 10046089 Center Bolt Valve Cover Gaskets 241-75 Jun 11, 2022 · Many of the adds for these cylinder heads state: "The Vortec head out flows the Bow tie head out of the box and is a 20 to 40 horsepower bolt on increase over earlier cast iron small block heads. 95: Chevrolet Perf. 78 Bowtie Racing Cylinder Head $982. 750-inch thread length with a tapered seat. Lighter weight, better handling are pluses but can I get similar performance using these heads on a nice 4. 500" valves LARGE-PORT VORTEC BOWTIE HEAD ASSEMBLY. 600") 225-cc intake ports; 77-cc exhaust ports; 65-cc combustion Sep 28, 2022 · The new bought parts counter OEM L-31 062/906 Vortec heads that never seen a truck are no more crack prone than any other SBC head. We multiplied 1. Or I could run vortec heads with edelbrock performer EPS #2716. 02-inch optional), and 1. Edelbrock part #2814 Super Victor Vortec Bowtie intake manifold is designed specifically for use with GM cast-iron Vortec Bowtie cylinder heads #25534351 (185cc) and #25534371 (215cc). 02/1. These heads include premium one-piece, stainless steel, high-flow 1. The difference in price though might be the cost of a manifold though?? But the bow-tie is ready for more performance. engines. 600" Intake / Exhaust. All Vortec intake ports are taller and narrower than Sep 18, 2009 · There are no "060" casting number Vortec heads. There are ways to tip the odds in your favor, though. Bowtie Bare Cylinder Head. 04-up. Small Bow Tie Vortec: 25534421: Scoggin-Dickey: $504. Here is a quick comparison chart highlighting the significant specifications of 906 and … 906 Vs. This cast-iron head features bigger valves, a thicker deck surface, and the Chevrolet bowtie. My 406 will be getting the new fast burn heads. I dont have any experience with these heads personally. Feb 25, 2011 · by 3V Performance » Mon Aug 06, 2007 11:43 pm Has anyone noticed any changes in the latest run of bowtie vortec heads from GM? I'm looking at the large runner ones and the exhaust ports are sucked in on the end ports so gasket overhanges. Commonly available 12 bolt SBC dual plane intakes do not have enough metal above the port to be ported to match the Vortec port, w/o having a vacuum leak or razor thin The intake bolt pattern is different and utilizes an eight-bolt attachment. Vortec sbc. ALUMINUM FAST BURN HEADS Chevrolet Performance’s Fast Burn 23-degree cylinder heads deliver maximum performance for Small-Block engines. 240" 78-cc D-shaped exhaust ports, raised . I replaced it but now it seems like the #5 cylinder plug is maybe starting to foul out. " Which is difficult to understand because no other casting numbers are used. A stock Vortec Bow-Tie head will flow 234 cfm intake and 151 on the exhaust. The Vortec Bow-Tie heads are beefed-up Vortec passenger car heads with better air flow, a thicker deck, both center-bolt and outside valve cover bolt patterns and the Vortec and conventional intake manifold bolt patterns. 94-inch valves. Cast-iron small runner cylinder heads o 66cc combustion chambers o 0. https://store. Dug up small port vortec bowtie exhaust flow with 1. Jun 23, 2007 · Seeing that the normal Voretc 350 L31 heads dont accept over 0. 500" lift #2: RHS Vortec Heads --> Pros: Seem like a good quality head, ~$875 a set (assembled) Cons: Hard to find / discontinued #3: Promaxx Vortec --> Aug 14, 2011 · When buying Vortec heads from junkyards (or any head for that matter), the chances increase that the heads will be cracked. 91 cid new Platnium cast-iron Dart Iron Eagle Heads 2. 100 70 48 0. Holley 4412 carb and 1. These upgraded production cylinder heads are ideal for 400-450 horsepower street and racing engines, making them great for circle track applications. Call it new tech by old NASCAR guys, conceived and executed by the long-time Winston Cup hands at Blue Chevrolet Performance cast iron Vortec cylinder heads will fit 1958 and later small block Chevy engines, and offer a 20 to 40 hp increase over earlier cast iron small block heads. Includes valve spring P/N 12551483, valve seal P/N 10212810, and spring cap P/N 10212808. Cast-Iron Chevy Bowtie heads #034 castings with 2. Jun 1, 2005 · This 632hp Small-Block Sports New GM Bow Tie Vortec Heads. 550" valves o Maximum 0. I bought some plugse and they didn't last long so I did some reading . Aluminum heads possess two additional threaded bosses under the intake runners. I Bowtie, cast iron Vortec head, 175/65cc ports, 2. The Vortec head is available in two casting numbers (10239906 and 12558062) that offer identical performance virtues. 300-inch lift. Vortec Heads outflow Bow Tie Heads right out of the box and are a 20 to 40 horsepower bolt-on increase over earlier cast iron small block heads. 50-inch exhaust valves (1. Mar 21, 2012 · Here is the optional Scoggin Dickey's Bow Tie Vortec heads, vs the Summit Racing/Dart Vortec replacement heads. Jan 16, 2013 · Many aftermarket Vortec style heads (including Bow Tie Vortec heads) feature dual bolt patterns allowing the use of the early 12-bolt intakes. 940"/1. I currently have a 350 V8 with estimated 380 hp waiting to put in my S10. 20. Intake is a Bowtie 14096242 and heads are 14096217. Monster-cubic-inch stroker Big-Blocks need lots of air to maximize their performance potential and Chevrolet Performance Bowtie race cylinder heads are designed for that task. Aug 28, 2008 · vortec head I bought a set too. 1996-2002 heads use a 8-bolt SCPI intake manifold. Completely assembled, ready to bolt-on; Airflow (281 cfm @ 0. 10, not 2. Drop-in springs with no machine work needed. 094 x 0. 400 227 140 0. $5 Off Your $100 Mobile App Purchase - Get the App Not Available. my cam has . 170 or 180 port 1. This exhaust port has a very low ssr and comes right off the seat. While all early cast-iron and all-aluminum heads used 3/4-inch-reach gasketed spark plugs, most iron heads made after 1969 utilize smaller, taper-seat spark plugs. Or use a ported 062 or 906 gm vorte head. 200" – requires Fel-Pro exhaust gasket P/N 1470 (may require minor trimming) Cylinder Head Bolt<br> Small Block Chevy $3. Jan 21, 2006 · There are two versions of the new GM Performance Parts Vortec Bow-Tie cylinder heads: This one, PN 25534371 (bare) and PN 25534431 (complete), with the larger ports, and another with smaller ports, PN 25534351 (bare) and PN 25534421 (complete) with 185 and 65cc volume, otherwise, the architecture and improvements over the L31 design are the same. 87 Vortec cylinder heads significantly outflow non-Vortec service replacement cylinder heads and earlier OEM cast-iron heads. 501 lift, vortec iron heads bowl blended, polished chinese air gap intake. These production Vortec heads were used in the new Vortec 350ci engine intended Vortec Bowtie cylinder heads come with bigger valves, a thicker deck surface and 66cc combustion chambers. 8-bolt and 12-bolt heads will fit any 4. the Bowtie Vortec heads have a 207cc intake port vs. 0 Centers . Jul 13, 2009 · you either need a vortec intake or a tall port bowtie intake. Runs great but the #1 cylinder plug fouled out after about 1000 miles. I'm not beyond starting over on a 4. I thought - Are code 14096217 heads Vortec? If they are setup with the intake, will they fit my block? Get the Best Performance with Chevrolet Performance Bow Tie Small Port Cast Iron Vortec Cylinder Head, 185cc Intake Ports 19331470 parts at JEGS. 550" valves; 210-cc intake port, roof raised . The water jackets have been moved away from the spring pads. 6-up ratio rockers, there's a chance the Vortec's 7/16" hole will not be long enough. The Vortec head uses a 1. I have a set of camel hump heads with under cover porting from brezezinski and would have to run edelbrock torker ll intake #5001. and buy some Vortec intake gaskets and match them up for a clue. It has bowtie angle plug heads (casting number 14011034). Maskin says more than 25,000 iron heads were sold last year. Sep 27, 2017 · Chevrolet Perf. All Vortec intake ports are taller and narrower than Heads are identified with the Bow-Tie logo on the exterior of the head below the exhaust flange and Vortec logo on top of intake port area. DOHC 32-valve, aluminum, passenger-side. intake valves and 1. 94-inch intake valve to flow 190 cfm at 0. 02 x 1. Aug 29, 2013 · Vortec heads were on 96-99 C/K 5. 580 valves Cast-Iron Chevy Vortec heads #10239906 1. Chevrolet Performance Cylinder Heads 25534351. Jan 1, 2003 · In essence, the Vortec head uses the iron LT1 chamber intake and exhaust ports in a standard-water-flow iron head. They also feature GM logo cast into bottom of intake ports. Jul 13, 2020 · 906 VS 062 vortec heads! Heres the difference and what you can do to make more HP!See my other videos for more about porting and flow data! **Press in Rocker Cylinder Head Flow Data At 28" H2O Chevy Manufacturer /Part Number Port/Vol Intake / Exhaust Valve Size Intake / Exhaust Combust. Or use the Edelbrock Etec 170 head. 10106179: 1990 LT 350ci V-8 350. But if you were going to up grade your heads from the old smog GM heads which would you buy & why. Oct 7, 2008 · In fact GM states that production vortec heads flow better than Bowtie Phase 2 Cast iron heads!!! Vortec heads have been used in many performance applications and by many performance magazines over the years and on average these heads, with standard off the shelf intake, exhaust and conservitive camshafts, make 400 + HP. The bolt pattern and the number casting is the quickest way to differentiate a Vortec Head from a regular 350 head. 36. The heads provide outstanding low-lift flow numbers and Fast Burn performance all in an affordable, cast-iron head. The earlier non self aligning rocker arm equipped heads have a 7/16" x 11/32" ovoid hole in them. 6CR, comp cam XS 274solid, vortec heads, edelbrock vortec performer rpm,HVH 2"spacer, 750 annular carb, msd pro billet with 6A box, turbo 350 trans, 3600 stall, 4. They require the use of a Vortec-style intake and self-aligning rocker arms, and come Aug 31, 2008 · 25534351C. The 12480034 head is intended for racing classes that require a "Stock/Replacement" type head and they're based on the '462 (camel back) type castingbut with a ton of extra room in the casting for decking or angle milling and porting. 94 heads that have a larger pinch and more deshrouding. Dec 7, 2010 · The Vortec is a far better head. Just pulled the heads off the track champions motor to find that the bowtie vortec heads have cracks between the valves!! heads have only last season on them. the pictures are in order: GM Small Port Bowtie Vortec, ProMaxx Performance Vortec, GM Vortec, Summit Vortec I imagine the promaxx vortecs were designed to copy the Small Port Bowtie Vortecs Jan 10, 2019 · In this edition of Throwback Thursday, we’re taking a leap back to April 2015, to check out: GM 1st Gen Heads vs. And production exh manifold. 31 Bowtie 572/620 Cylinder Head Assembly $1,420. Dec 12, 2018 · LT-Specific Cylinder Heads. I scored those bow tie heads for 75. 31 Mar 5, 2014 · Although the Phase 2 cast iron Bow Tie cylinder head has the same casting number (14011034) as the Phase 1 head it replaced, there are several significant differences between these two heavy-duty cylinder heads. 707/. Quick View. These upgraded production cylinder heads are ideal for 400-450 horsepower street and racing (great for circle track applications) engines. 085/1. The only difference is the water jacket revision so these heads could be used on conventionally-cooled small blocks. Vortec Bowtie Cylinder Head Technical Notes: • Cast-iron Large Runner Jul 4, 2016 · Re: L48 Project: Ported Chevy 450 heads vs. Temporarily mount the heads, then go from beneath the head, up through the bores to scribe the cylinder bore onto the head. Features include fast burn combustion chambers, and a high-velocity port design. Oct 13, 2020 · Flat top pistons 350 max . This is the average hp over a powerband of 5,700rpm GM Bow Tie head Summit Racing/Dart vortec 403 tq 293 hp 393 tq 289hp So, what does this all mean? Complete Vortec Bow-Tie Small Port Cylinder Head The most powerful, Vortec Bowtie cast-iron head within the Chevrolet Performance portfolio. teh stock Vortec 170cc. They just have much more wall thickness everywhere for porting, much like the original Dart Sportsman II's that were brought into the marketplace originally as a direct competitor to the Iron Bowtie. 900" Intake / Exhaust 1. Where you can gain substantially more power is by concentrating on the exhaust side of the head. 55 valves, "small port head" Some of the Vortec heads (like those used in 1-ton trucks) had a lot of iron around the exhaust valve seat and tended to reduce flow. 500 239 147 These production heads will outflow any other production Chevy small block head and will also outflow many aftermarket heads. s pulled out the pressed in studs and tapped the holes for screw in type studs. with 66cc combustion chambers, 215cc intake ports, and 84cc exhaust ports. 3 V6. Wouldn't changing to a 64cc head up the compression to around 9. somehow, when i was putting the standard intake on it, i didn't notice the huge difference Jan 12, 2015 · I'm assuming we're talking about the L31, 5. 000"/1. With my old combo my 69 camaro would spin the tires from a 30mph roll. Jul 6, 2016 · With lower leakages I will take these flows as a win. it might make sense to get a set of Smallport Bowtie Vortec heads Jun 6, 2002 · From what I gatherif you want to port an existing head the Bowtie or other similar head is better, but if you just want a head to install as is then the Vortecs are the choiceif money is an issue at all then the Vortecs win hands down for sure. Go to the parts store and ask for standard plugs for that application. Vortec iron head: 12558060: Summit Racing: $329. 940/1. i am pretty impressed with the latest gmpp ad with the big gold head. 45 $906. Dec 13, 2018 · Although the Phase 2 cast iron Bow Tie cylinder head has the same casting number (14011034) as the Phase 1 head it replaced, there are several significant differences between these two heavy-duty cylinder heads. Cylinder Head, Vortec Bowtie, Small Port, Iron, Assembled, 66cc Chamber, 185cc Intake Runner, Chevy, 350 Dec 5, 2005 · Interestingly, the Bow Tie heads flowed better than expected on the flow bench, but dyno numbers immediately puffed a longtime myth about the 327--although it freely pulled past 7,000 rpm, power May 9, 2009 · FWIW, even Chevy uses the Fast Burn heads on the ZZ6 now which is basically an aluminum version of the cast iron Vortec head, instead of the old L98 heads, if that tells you anything. Jun 24, 2003 · vortec or phase 2 heads which one is really better value? Votes: 0 Apr 26, 2023 · JEGS 555-514080 Vortec Cast Iron Cylinder Head Features: Fits all 1955-2002 Chevy small blocks except LT1, LT4, and LS-style engines; Utilizes fast-burn combustion chambers and high-velocity intake and exhaust ports Mar 7, 2009 · Here, for instance is the flow, intake and exhaust, of the L31 Vortec GM head, part number 12558060, casting number 12558062. 64 Small Port Vortec Bowtie Cylinder Head Assembly Oct 5, 2010 · The heads however are new to me and I dont see a lot of reviews on them so I figured I would ask on here. Jul 18, 2006 · C3 Tech/Performance - Vortec Iron Heads vs Aluminum Edlebrock Heads - If I beating the dead horse sorry. The Phase 2 cast iron Bow Tie head can be identified by its redesigned outer water jacket wall with a machined bar between the exhaust Mar 24, 2013 · 1985-1995 heads use a 12-bolt CPI or TBI intake manifold. I would like to use NGK and I think they need to be hotter than what I am using. I had a new set of pushrods for a 1977 350 which is what I used when I built the engine. VORTEC BOWTIE CYLINDER HEADS Vortec Bowtie cylinder heads are the most powerful cast-iron heads offered by Chevrolet Performance. 300 = 1. Would they work with a Vortec headed 010 block 350? CNC-machined aluminum performance cylinder head; Completely assembled with 2. When it comes to rebuilding the Gen I SBC engine, selecting the right combination of cylinder head for the block becomes the ultimate performance question. Jun 2, 2011 · To begin with, L31 Vortec heads have 7/16" ROUND holes already in the heads- not slots- that the pushrods pass through. Both are great This cast-iron head features bigger valves, a thicker deck surface, and the Chevrolet bowtie. 75 Aluminum Bowtie Chevy Small Block 400 cid $7,548. the valve spring seat ariea needs to be enlarged and the valve guide boss needs to be machined down and the push rod hole needs to be elongated to really put the lift to em. I use AC 41-993 tapered seat plugs in my 1997, 5. Jan 5, 2014 · And it would create lesser of a better burn like you had stated earlier when you posted the pic of the older gm head vs the vortec head. May 1, 2023 · The baseline power numbers are also down due to reduced compression (8. Modifying the heads to accept early intake manifolds Jul 24, 2018 · GM Vortec 185cc Cylinder Heads. It features raised runners that closely match the port shape and location of these heads and is the best choice for racing classes that prohibit modification to Jan 12, 2015 · 1967 camaro--327, 9. We got to test a stock E7 set, A modified RBJ E7 set with Stud RR 1. Chamber Volume. 60-inch optional). I've had very good results on street driven 350's with vortec heads. Small-Port Vortec Bowtie Cylinder Head Assembly. Show More Vortec Heads require a Vortec-style intake manifold due to an improved manifold mounting flange and gasket design and raised intake ports. 3 though to put in the truck instead. Feb 20, 2019 · The Gen V and VI heads used a non-adjustable rocker arm with 3/8-inch studs. leaving a major influance on the rest of the after market with its GM engineered trait " Centered Sparkplug " location. There is a part number 12558060 Vortec cylinder head assembly sold by GMPP that is made from the casting number 12529093 head. My old combo was 406 summit flat tappet cam with . 10 gears, caltracs suspension, M/T drag radials. 6 rr, and a set of DV modified gt40 aluminum heads. The OE Vortec heads feature pressed-in rocker studs, whereas the Bow-Tie version comes with 3/8-inch Sep 26, 2008 · Heads are identified with the Bow-Tie logo on the exterior of the head below exhaust flange and Vortec logo on top of intake port area. 125/1. 450" deck thickness o Hardened exhaust Oct 17, 2012 · The XE or VooDoo 268 is a really good off the shelf cam for stock Vortec heads in a flat top piston 350 with an RPM intake, 700+/-cfm vacuum secondary carb, and 1 5/8" headers. The Vortec heads are a little bit lighter than the older heads and have a Feb 1, 1999 · Using a taller head casting with a 0. 500" Intake / Exhaust. The have Comp Cam valve springs and Roller Bow Tie Small Port Cast Iron Vortec Bare Cylinder Head, 185cc Intake Ports. Apr 25, 2010 · Out of all the heads in the last 13 years that still peak intrest has to be the Vortec . 24 Bowtie 572/720R Cylinder Head Assembly $1,599. Shop Now at the Guaranteed Lowest Price! $5 off $49 / $25 off $249 / $55 off $499 / $110 off $999* - Use Promo Code: SUMMER Mar 19, 2012 · point is ,,, there is some fast motors out there with camel hump heads ,, they can be made to work ,,, if your decided between a vortec and a double hump anyway ,, its a budget deal ,, the vortec wins ,, i posted ,, IF you already have a set of 461's 462 , 202 valves , screw in studs ,,, i wouldn't change them out for a stock vortec head ,,, Jun 22, 2007 · Moving up the food chain, GMPP has offered various incarnations of Bow Tie aluminum heads for these engines, including high-port heads with conventional 23-degree valve angles, Rat motor-like Jan 29, 2008 · I have been having quite a bit of valve train noise with my new build. 450" deck thickness o Hardened exhaust valve seats o Machined for 2. There is such a thing as quanity of air and there is such a thing as quaility of air and the Votec Bowtie heads have the Oct 6, 2006 · The new Bow-Tie version accepts both manifolds from I have been reading. The Bowtie Largeports seem to be right there with teh 210cc Fastburn aluminums but are $200 a Jan 7, 2010 · Cast-Iron Chevy Bowtie heads #034 castings with 2. The Old 034 Bowtie heads make great power when correctly ported and modded. The head is set up for 2. The Phase 2 cast iron Bow Tie head can be identified by its redesigned outer water jacket wall with a machined bar between the exhaust Nov 10, 2005 · Besides dyno testing the new Vortec Bow-Tie heads on a ZZ4 crate engine, McLaren performance also put them on a flow bench. 24 Bowtie Racing Cylinder Head $982. Apr 6, 2017 · The bolt hole c/l on the 062s are raised . 02 valve. Large Bow Tie Vortec: 25534446: Scoggin-Dickey: $499. 450 in. 062 Vortec Heads: A Head-To-Head Perhaps its biggest drawback is its unique 8-bolt intake manifold bolt pattern that requires Vortec-specific manifolds. PN 10134392/Casting number 14011034 is the Phase 2 Bowtie, cast-iron head with 64-cc chambers and port volumes of 184/55 cc. Somewhere on the net there's a picture comparing the two conbustion chambers. cam timing: The following are my opinions. 094 inches of circumference. 305 vortec heads vs 350 vortec heads (flow data)Vortec sbc l31 Oct 15, 2008 · Valve Springs For Vortec Heads 10309-1 Crane Cams valve spring and retainer kit. The GMPP Bowtie Vortecs are not known for being crack prone . May 12, 2023 · The 906 and 062 Vortec heads are two popular cylinder head options used in small-block Chevy engines. These cylinder heads are ideal for applications up to 350 horsepower, but they require Vortec-specific intake manifolds. 375 restrictor plate. This just makes me sick!! this guy really makes my stuff look good. Bowtie vortec he Post by Carnut1 » Mon Jul 04, 2016 5:53 pm Intake ratio set for 85% but the bottom of the bowl is bigger as in as big as 252 cfm 081 1. The deck surfaces are . 200 139 101 0. An aluminum head casting – distinguished by Chevy Bowtie logos at each end – and a valvetrain with high-rpm, LS-style beehive-type valve springs stretches the performance range of the heads to enable greater power at a higher rpm! Jul 4, 2016 · Re: L48 Project: Ported Chevy 450 heads vs. Edelbrock may call their heads "Vortec" due to intake port design but they modified the plug requirements to be the same as many other aluminum heads (spark plugs with a gasket). 6 64cc 180cc runners (Cheap) are they to much head for my combo? I don't race the car but like everyone if i could give it a little more HP that would be great. 94 inches times pi = 6. 1 bolt c/l over the 062s and the port is between . Runs good with a 2500 stall. Chevrolet Performance Vortec Large Port Bowtie Cylinder Heads. 400" Intake / Exhaust. May 25, 2016 · All cylinder heads from Aerohead Racing (PN 305-350-400) come fully reconditioned and assembled to be as good as or better than new. 7 90 truck with vortec heads and I'm trying to gap my spark pluges. Out of all the heads produced from GM in the last 40 years for the small block chevy the Vortec "First Generation " style went out with a BANG. $719. Jul 2, 2003 · Yes, it is a racing head that will go the distance and will stand a bunc of modifications. SD is still listing the iron Bowtie small runner at $500ish a head. In my opinion, the VORTEC head is a weak sister (material wise) that is designed to increase fuel milage, and reduce weight. Cylinder Head, Vortec Bowtie, Large Port, Cast Iron, Bare, 66cc Chamber, 215cc Intake Runner, Chevy, 350, Each Oct 29, 2008 · I have the chance to purchase a stock set of GM Phase 2 Bowtie raceing heads p/n 14011034 2. 5:1 vs. 9. 500" lift to play with go with the 30 degree seat and don't look back! Feb 28, 2024 · Vortec heads also employ a longer thread-length spark plug. 050" duration, no problem. 0L c/n 059 Vortec heads having the "same but smaller" ports is incorrect. 200" to match the ports in the raised runner Bow Tie cylinder head P/N 10051101. This has a very limited use. Just remember, both of these heads aren't anything great, so pay accordingly. The Vortec heads are a little bit lighter than the older heads and have a “kidney” or “heart” shaped combustion chamber that is more efficient than the double hump chamber. co Cast Iron Bowtie Head &model=<!--12480034--> As far as I know they are out of the box and untouched. 045 and the port its self is rasiesd approx . Shop Now at the Guaranteed Lowest Price! $5 off $49 / $25 off $249 / $55 off $499 / $110 off $999* - Use Promo Code: SUMMER Apr 6, 2018 · The Vortec heads offer great intake port flow despite the rather small 1. 31 $560. but if you are competing against others running ported prepped GMPP bowtie Jul 6, 2016 · Re: L48 Project: Ported Chevy 450 heads vs. The Vortec heads are much like other stock small-block heads in that the intake port flows fairly well, but higher rpm power is limited by a weak exhaust port. . If it were only that easy Chevrolet Performance cast iron Vortec cylinder heads will fit 1958 and later small block Chevy engines, and offer a 20 to 40 hp increase over earlier cast iron small block heads. 300 190 129 0. In comparison with other GM iron small block heads, the Vortec is superior to them all, including the cast iron Bow Tie head, which means there’s no reason to run the Bow Tie unless the rules dictate its use. But the word soon spread by way of the performance magazines, especially with one story that pitted the venerated Bow Tie performance head against the Vortec with the Vortec coming out on top. 49 Champions. The big runner heads do have the D-port exhaust ports and do move a lot of air. Chevrolet Performance 19331471 - SB Chevy Small Port Bow Tie Cast Iron Vortec Cylinder Head, 175cc Intake Ports (3) $719. Use this as a "do not go past" line. 00 in. 00 bucks. they come from chebby complete for $1100. Vortec Bowtie Cylinder Head Technical Notes: • Cast-iron small Chevrolet Performance Vortec large port Bowtie cast iron cylinder heads feature revised intake and exhaust ports and are machined for 2. 100" Intake / Exhaust. Jul 19, 2023 · I updated my 1972 307ci small block engine in my 68 Chevelle with new Vortec heads, medium cam,Duration:262/270,RPM range=1300-5600. He says the heads are Vortec; but I can't see that as being true. 7 (non LS) Vortec in this thread. 400-inch-thick deck, the factory port design removes more material internally than would be possible with Bow Tie and other previous GM heads. 500 OEM valve job and shape Vortec Bowtie cylinder heads are the most powerful cast-iron heads offered by Chevrolet Performance. 00 a peice from jegs, the stud May 9, 2005 · Scoggin-Dickey also offers a large-runner 203cc Bow-Tie Vortec head for the high-rpm enthusiast. 530" valve lift (without modifications) o Straight spark plug design o No heat Vortec Bowtie cylinder heads are the most powerful cast-iron heads offered by Chevrolet Performance. 828 square inches). 6, This set of E7's with stock sled rockers and 1. The intakes are 2. Chevrolet Performance Cylinder Heads 25534421. 3? The Edelbrock 2814 intake is used on the raised runner Vortec Bow-Tie heads. Vortec Bowtie cylinder heads are the most powerful cast-iron heads offered by Chevrolet Performance. exhaust valves. Vortec Bowtie Cylinder Head Assembly 19331470 Chevrolet Cylinder Head Small Port. Used on LT5 Corvette ZR1. Jan 1, 2011 · I have a 5. HOT ROD Staff Writer Jun 01, 2005. If using 1. However, 062 has slightly larger valves than 906 Vortec Heads. 02 intake. There remains a considerable market for SBC iron heads. that guy who's the nat'l champ in whatever class says he runs them Jun 18, 2019 · Get the Best Performance with Chevrolet Performance SB Chevy Small Port Bow Tie Cast Iron Vortec Cylinder Head, 175cc Intake Ports 19331471 parts at JEGS. 66 $6,963. $1,078. Small-Block Cylinder Heads - Small-Port Vortec Bowtie $607. Vortec Bowtie cylinder heads come with bigger valves, a thicker deck surface Apr 21, 2018 · but a #034 cast-iron Bowtie Head will make the same HP when Ported ComCams solid lifter cam CS 47S Special FT CS 47 6308/6310 S 108. I also don't want to rev the motor to the moon to make more power. 800" Intake / Exhaust. Cast-Iron Bowtie Heads. Not surprisingly, the high-velocity, high-volume design of the heads Jan 26, 2008 · Need to update to something diff. Z. Dec 21, 2022 · The Vortec chambers are much better than the sportsman II's. Feb 5, 2016 · I have acquired a set of 14011053 casting aluminum heads for a 4. You can also check the casting mark May 2, 2016 · It is not a vortec design head. Come to find out I was buy the wrong pluges. The vortec heads use a longer spark pulgue so now I need info on gaping them. It also has the stock 260 hp cam and 76cc heads that come installed on those engines. With the installation of larger valves, it will not only generate sufficient flow for good top-end horsepower, but the Vortec’s high swirl and port velocity also means Free Shipping - Summit Racing™ Vortec Cylinder Heads with qualifying orders of $109. 300" Intake / Exhaust. 625 = 369. Its single-plane runner design maximizes horsepower at high rpm, and the gently curved runners enhance mid-range torque. Aug 5, 2019 · The two day dyno test was planned for many heads tested on same shortblock. The info above about the L30 5. 00 Dec 21, 2022 · The Vortec chambers are much better than the sportsman II's. The heads are GMPP Bowtie Phase III angle plugged heads. Jul 11, 2004 · Heads are identified with the Bow-Tie logo on the exterior of the head below exhaust flange and Vortec logo on top of intake port area. Bowtie vortec he Post by randy331 » Wed Jul 13, 2016 5:41 pm mag2555 wrote: Yes, that's the deal,and if you are going for max power at real high rpm with less than a 1200 rpm power band then the area between the back of the valve and the pinch point / port choke should contain the same number of May 28, 2008 · My engine does have the 8. Dec 19, 2012 · Vortec heads vs. Cast-iron large runner cylinder heads o 66cc combustion chambers o 0. Production gasket for all Vortec-design cylinder heads (4-bolt attachment to cylinder heads P/N 12529093 and P/N 12558060) Requires the use of GM attachment bolt P/N 12550027, because the bolt has a ball design on the end that sits in the head so it will not crush the intake manifold gasket Mar 19, 2009 · Out of the box, unported, Bowties don't flow much better than a stock unported "fuelie"/camel hump 60's head. Offerup heads vortec Vortec gm chevrolet sbc bowtie asm types edelbrock topplock nya Vortec sbc head iron heads cylinder cast bare valve chevy 170cc 64cc exhaust 1996 intake sb autoplicity engine zoom set. 060 over. Cylinder Head, Vortec Bowtie, Small Port, Cast Iron, Bare, 66cc Chamber, 185cc Intake Runner, Chevy, 350 The casting quality is as good as the best aftermarket iron heads, and its flow capability on a valve-size-for-size basis more than matches the Phase 6 aluminum Bowtie heads. at the bottom are the "Fast Burn aluminum head". 690 274/282 on 106. 05 $1,310. The L31 Vortec head is probably the most over-cammed head GM has ever produced! Guys think that because it's said to flow better than the old Bow Tie heads, they can run 240 degrees @ 0. 12. The bowtie intake flow was from a 2. 60-inch valves and 3/8-inch screw-in studs and guideplates. Sep 23, 2010 · Deshrouding the valves will help. the cutters were like 30. Aug 12, 2017 · The Bow Tie Vortec head is currently GM’s best iron head for the small-block Chevy. 700" Intake / Exhaust. It's a 350 with a Voodoo 262 flat tappet cam with the lunati lifters that came in the kit with the cam. If your truck is your hauler and work horse I think I would go with the reg vortec heads and spring for a manifold. 3 V6 Vortec Bowtie GMPP NOS Aluminum Cylinder Heads 14011053 IMCA. Vortec Heads Reader Guide. Dec 27, 2006 · The intake flow is better and the exhaust flow of the Bowtie Vortec head is MUCH better than the normal Vortec head. To find heads from an assembled engine that have a better than average chance of being uncracked, look for: heads from a wrecked vehicle. You will need an intake designed for VORTEC heads, where as the Bowtie Heads will take pre 87 intakes. 97: Chevrolet Perf. The Vortec head was first produced for light-duty trucks in 1996, and at first no one really gave these new castings much more than a cursory look. 7 Vortec small block. 55 in. 7L engines. The valve placement angles are at 23 degrees. 00/1. Dec 15, 2005 · I've spent the money on the Vortec intake (and obviously the heads are where the $$$ is at), but I'd like to stay with Vortec intake compatible heads. I know JEGS has the aluminum fast burn Bowtie piece at around $820 a head shipped. 450-inch thread-length tapered-seat plugs, or the center electrode will be buried halfway inside the spark-plug hole, which kills efficiency and power. Vortec Bowtie cylinder heads come with bigger valves, a thicker deck surface and 66cc combustion chambers. Chevrolet Performance Vortec large port Bowtie cast iron cylinder heads feature revised intake and exhaust ports and are machined for 2. Technical Notes : You must use a raised runner design intake mainifold P/N 10051103 (6 bolt mounting), or Vortec design 12366573, 12496820 Jul 6, 2016 · With lower leakages I will take these flows as a win. Gen. The benefits of the L98 heads over the Vortecs will be the reduced weight, a bump in compression ratio (that may or may not be a benefit) and be much less likely Apr 25, 2002 · read lots and even posted a few on the virtues of the vortec heads, but am looking for something that can handle more. If you want a good aftermarket vortec h Aead use the RHS 906 torker (vortec) head. 0. I am not sure I can match the bowtie flow. Apr 21, 2009 · We have used the Vortec Bowtie heads on alot of our engines and the newer heads still have the 218 runners not 225 like they were talking. Bowtie vortec he Post by Carnut1 » Wed Jul 06, 2016 1:26 am F-BIRD'88 wrote: Cams: Comp cams street mechanicals 12-676-4 XS268s or 12-677-4 or XS274s (with flat top pistons) GM Chevrolet 4. This figure times the valve lift equals a flow window area (6. I purchased a set of the 185cc vortec Bowtie heads, but due to health issues they have been sitting in my closet for the the past two years. 04-. hebb mghtqre cuvphvl hkjflmt pcet kgiaz vwv nvblxmh zve tqwfzz