WebEven older is the troglodyte-like 64-cc chamber heads, often referred to as “double hump” or “camel hump” heads because of their distinctive casting marks on the ends of the heads. These smaller chamber heads … WebCylinder Head and Engine Parts - Cylinder heads are available for all makes and models. With a remanufactured cylinder head, you can get back on the road quickly. WE HAVE …

SMALL-BLOCK VORTEC BOWTIE CYLINDER HEADS

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Guide to Chevy Small-Block Production Heads - Chevy DIY

WebOct 9, 2006 · IIRC the 217s are an updated version of the iron 083 head casting that was used on Fcar TPI engines in the late 80s and early 90s. So they are non-swirl heads, have 1.94/1.50 valves, 64cc nominal chamber with projected spark plug placement (for faster burn), and they might have a thicker deck. WebJun 24, 2008 · Everytime there is a question asked about an 883 or old 1200 head with porting compared to xb head with porting the answer is always that the xb design is better. I am guessing that the design must be significantly better if there is a ten hp difference between an evo 1200 and a new rubber 1200 all other things being equal. WebJan 21, 2024 · RPO L99 and LS3 cylinder heads are aluminum with 68cc combustion chambers, rectangle intake ports with 257cc runners, D-port exhaust with 87cc runners, 2.165˝ intake valves and 1.590˝ exhaust … stillbirth rates by week