Looking for recommended valve lash on newly rebuilt 57 312. Block is .030 over, zero decked, heads milled .010, which makes it close to stock compression ratio, cam advanced 4 degrees, flat top pistons, B intake and 600 Holley. Building mainly for low end torque. Dave V

SE Wis

Should be .015 hot.

  Dennis in Lititz PA

Thanks Dennis I thought I read somewhere that it should stay at factory specs of .019. I appreciate the response. Dave

SE Wis

See if any of these past threads helps.

http://forums.y-blocksforever.com/FindPost42903.aspx

http://forums.y-blocksforever.com/FindPost42909.aspx

http://forums.y-blocksforever.com/FindPost38509.aspx

Lorena, Texas (South of Waco)