Quote:

if we sonic test , whats the minim thickness on the thrust side?

I like to see .150+ after boring and honing, no matter which block or brand I know racers that got away with .120 but those spots where down deep in the ring travel Why not find a 440 block and forget about the old 413 block

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)