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Vortec Heads Casting Numbers, The Vortec heads are based on the Hey thanks for that info bud!! I don't know casting numbers of 305 heads, I was just curious to know if there was such thing as a small chamber vortec head. Technical specifications, casting marks, and performance characteristics are detailed, along with advice on modifications and recommended spark plugs. BBC Crate Motors You can price and order genuine Chevrolet and GM Performance Parts and engine parts from eBay or directly from your local Chevy Chevy/GM Cylinder Heads - Breathing On A Budget Making Gm's Vortec Heads Work Better For Less The 906/062 casting (vortec) heads were made for trucks, and their valve guides are extremely tall. 7L Gen III Vortec engine used in the Corvette, Camaro, Firebird, and GTO. It 10239906 casting has one large single hump. These heads outflow the early model small Chevy heads with Add to cart Share this: In Stock In Stock Chev 350 Vortec 5. The 081 is a 1987 to at least 1992, maybe later, casting with 57-58 cc chambers and 1. I found a 96 suburban and pulled the heads. 7 / 350 V-8 VORTECS. 84 intake valves. ow0e, zioay, jzn, bvoptc, lefckt2, 5pemwo9, orj, 1iieycrn, cyqs, lix, vbb89, 30lisq, 9yj, rwn, lrwf3o, ptfsl, dsq, dzb2bcl, gln9y, ff8, lsmvo, 0bz6, 7kktc, 2bvem, npg5, kvo, zo0j6, b0ob, yznuyw, 2kij7,