Quote Originally Posted by IC2 View Post
I'm at the 'bitter end' of the minimum of ~.020 (spec is .020-.060). Preload on these pedestal rockers is set by guess and by golly - you bolt the rockers in place, make sure the assembly being adjusted is on the cam base circle, then torque to 18-20 lb ft. If it takes a quarter to half turn after first contact to reach that torque figure, it's supposed to be 'in spec'. you get the picture. Now, pull the engine apart. replace the Fel-Pro 10112 .039 compressed thickness head gaskets with the 'recommended' Fel-Pro 9333Pt1, .047 compressed thickness - it will, I'm sure, get worse.

What I'm trying to do is get some adjustability in my valve system - and pedestal mounts aren't what I need
I haven't kept up with this thread so thanks for the additional info. I also don't understand the head gaskets coming into play but no matter..

I will agree with Pat, you already know the length, just insert longer push rods, I'd go .020" 'cause that should get you close to the middle of "the spec". But, that's my opinion, fwiw - ymmv - imho - yada yada yada...

I'll be watching for a conclusion! Should I put on my cheerleader gear now?