Our 383 is getting close to coming out of machine shop and so my Dad and I are going to be starting the build with the parts we currently have. Had a few questions.

1. I’ve got a comp pushrod checker. Thanks to Richard and others, I’ve got a decent idea on rocker geometry. My question is, when I set valve lash (using solid lifters) for purposes of using the pushrod checker to get a length so I know what size to order, do I set valve lash to zero or actual lash per the cam card? I’ve heard it both ways.

2. If I do set lash to cam specs for purposes of testing for length with the checker, obviously the engine will be ‘cold,’ and I’ve read to subtract .006 from lash spec to get an approximate lash while engine is ‘cold.’ Is this acceptable?

Thanks