who runs 13sec to 12.80 in the 1/4

If he goes with the speed pros and the small chamber 318 heads and later decides he wants to step up the power then what ? Toatal rebuild again?

The 107s even if he set them at zero deck with the 360 heads should be pump gas friendly.

With the speed Pros way down in the hole, a think gasket and small chambers he could end up with terrible quench and still have detanation problems. Been there before with a 440. It had low compression TRWs (2266) think .024"gaskets and milled 346 heads. Maybe 9.8:1 compression. It hated pump gas even with a good size cam.

I do agree he needs a good machine shop to help but he should be building a short block that not only fits his budget but can be upgraded later.

If he doesnt deck the block for zero deck he should be at 10:1 with a 68cc head and a .040" gasket

The Speed Pros would be just over 9:1

If he uses small chamber 318 heads (62cc?) and the think .027" gaskets he'll be at the same 10:1. Now if he decides to go to a Edelbrock head later hes going to loose some compression becuase the chambers are bigger then the 318 heads.