replacement heads for 1966 to 1984 shovelhead engines maintain a stock appearance but ... ports and combustion chamber intake and exhaust ports are in the stock locations and ... with stock intake manifolds and exhaust pipes s&s intake ports feature a ... are the same diameter as stock but exhaust valve diameter 1.720 has been reduced ... used in s&s cylinder heads for shovelhead engines are specifically selected for ... assemblies s&s cylinder heads for shovelhead engines are sold complete and assembled ... include rocker cover gaskets head and exhaust pipe gaskets all required hardware and ...
the one to use in a high compression shovelhead engine it worked great for stock heads ... when we introduced our s&s heads for shovelhead engines with valve springs that could ... 565s cam for big inch high compression shovelhead engines is just the ticket for big bad ... with an s&s super d carb and 2 drag pipes the lower set of curves show the torque ... from 3000 to 4000 rpm is typical of the exhaust system used in this test please see a ... this catalog 565s camshaft for 1978 84 shovelhead engines 33-5195 cam specifications for ... ° 238° valve timing1 open/close intake exhaust valve duration intake exhaust .475 pan ... shovel valve lift lift tdc2 intake exhaust spring spacing required no bolt in ... high performance hydraulic tappets for shovelhead engines stock hydraulic tappets are not ...