Max valve lift 55 331

[57eldoking]

Does anyone know the maximum valve lift for a standard 1955 331? Asking for a friend, thanks.

["Cadillac Kid" Greg Surfas 15364]

Henning,
Are you asking what is the valve lift specifications for the motor or what would be the maximum possible before coil bind at the valve?
Greg Surfas

[Dave Shepherd]

 Or hitting the pistons?

[57eldoking]

Before hitting the pistons.

["Cadillac Kid" Greg Surfas 15364]

Making the assumption that you want to change cam shafts, the only safe way to do this would be a physical check with modeling clay.  Pull a head, put say 3/4 inch of cclay where the valve will approach the piston (on top of the piston), re4-assemble (with head gasket),, rotate the engine and see what happens to the clay.  That will tell you what you have now, and give you a starting point for a new cam. OR, I might suggest calling Iskenderian Cams.  They were experts at cams, etc. for those motors and maybe Ed will still have the information around.
Greg Surfas

[57eldoking]

Thank you Greg, I'll pass the information along.

[J. Gomez]

Henning,

The MPL shows the intake and exhaust valves to be the same for 1954-1956. The engine specs for the 1955 and 1956 shows the valve lift to be .411”, attached is the 1956.

Good luck..!