stock cylinder heads in order to reduce compression to a reasonable level for this reason ... compression ratios are not specified on the charts ... on this page final compression depends on the chamber modifications ... /16 45/16 5 bore 35/8 35/8 3 5/8 compression ratio piston type forged forged forged ... 2,259.95 $2,309.95 $2,229.95 $2,359.95 compression ratio depends on cylinder head type ... modifications must be performed making compression ratios completely dependent on final ... engines include a special pushrod tube adapter pushrod tube assemblies are not ...
are cast to shape versions of the cnc machined ports used in the tribute heads ... without the high price exhaust port adapters and flanges are included to make it ... a custom exhaust system heads are machined to accept s&s compression releases as ... piston and head combination yields a compression ratio of 12:1 when installed in an s&s ...