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Chevy Vortec Bowtie Heads - Brzezinski Racing Products

    https://www.castheads.com/cylinder-heads/factory-chevy/chevy-vortec-bowtie-heads/
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BIG-BLOCK BOWTIE RACE CYLINDER HEADS - Chevrolet

    https://www.chevrolet.com/performance-parts/components/engine/big-block/bowtie-racing-cylinder-heads
    BIG-BLOCK BOWTIE RACE CYLINDER HEADS 12363425 BOWTIE RACING CYLINDER HEAD Aluminum racing head Machined for 2.190"/1.880" valves (+.400" long required) 380-cc rectangular intake ports – raised .100" 110-cc exhaust port – raised .750", vanes in port floor (“W” port) 115-cc “open chamber” combustion chamber Rocker cover rails raised .250"

Chevy Bow Tie Cylinder Heads - Brzezinski Racing …

    https://www.castheads.com/cylinder-heads/factory-chevy/chevy-bowtie-heads/
    On a motor running 7,000 rpm the difference from a stock Bow-Tie to an “UnderCover Ported” head is easily 25 horsepower. We can only modify your Bow Tie heads, since they are no longer available new from Chevrolet. “UnderCover …

Bowtie Race Cylinder Heads - Ed Rinke Performance

    https://edrinkeperformance.com/bowtie-race-cylinder-heads/
    Bowtie Race Cylinder Heads Monster-cubic-inch stroker Big-Blocks need lots of air to maximize theirperformance potential and Chevrolet Performance Bowtie race cylinder heads are designed for that task. They are made of 356-T6 aluminum with huge, raised intake ports, larger valves, smaller combustion chambers and two additional head bolts for ...

Chevy Small-Block Race Heads Guide - Chevy DIY

    https://www.chevydiy.com/chevy-small-block-race-heads-guide/
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Build a Chevy Circle Track Racing Engine – Cylinder …

    https://www.chevydiy.com/build-chevy-circle-track-racing-engine-cylinder-heads-valetrain/
    For an aluminum head with bronze valveguides, that should usually be around 0.0012 of an inch on the intake and 0.0015 of an inch for the exhaust, which sees more heat. For a cast iron head with iron guides you can get by with 0.0015 of an inch of clearance on both.

Chevy Open Aluminum Outlaw Heads - Mullins Race Engines

    https://mullinsraceengines.com/heads-top-end-kits-chevy-open-aluminum-outlaw-heads
    My theory is that the 23 degree head is the best of all worlds in dirt modified racing! We are making over 125 hp more than we were five years ago. I also like the fact that 23 degree parts are less expensive than 18 or 15 degree parts. These parts include the head castings, intake manifolds, pistons, and valves.

chevy bowtie L34 heads? - Hot Rod Forum

    https://www.hotrodders.com/threads/chevy-bowtie-l34-heads.157988/
    Yes, the 034 Bowtie can be modified to the point you are describing, and are commonly modified this much for racing. If you are intending to use these heads on a street or street/strip engine then the Titanium valves are a bad idea, wear life is poor on the stems and seats. Titanium is used for it's very light weight in circle track use at ...

Bow Tie Phase 2 heads - Team Chevelle

    https://www.chevelles.com/threads/bow-tie-phase-2-heads.227329/
    Discussion Starter · #1 · May 28, 2008. Only show this user. I have a chance to pick up a set of Bow Tie phase 2 heads with a casting number 14011034. These are 64cc heads with 2.02 intake 1.60 exhaust valves with angle plugs. I can get these really cheap from a friend who is pulling the engine out of a car he just got and dosent need them.

Vortec Bowtie Cylinder Heads - Ed Rinke Performance

    https://edrinkeperformance.com/vortec-bowtie-cylinder-heads/
    Vortec Bowtie cylinder heads are the most powerful cast-iron heads offered by Chevrolet Performance. These upgraded production cylinder heads are ideal for 400-450 horsepower street and racing (great for circle track applications) engines. Vortec Bowtie cylinder heads come with bigger valves, a thicker deck surface and 66cc combustion chambers ...

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