[Dragonoake]

A tall deck hot rod BBC with stock pistons ? You do realize these things are four ring, HEAVY flat top HEAVY cast, terrible, HEAVY . The stockers in trucks had a rev limit of about 3500 rpm and STILL HAD FAILURES,,

Even with the smallst chamber heads the c/r will be less than 8.5 to 1.

have built many of thse engins and the minimum requirement should be a .400 longer rod and a three ring piston. Anything else is a waste of time and money.:spank:

I am in complete agreement

 

[Dragonoake]

Ran my Tall deck well over 3500 many many times and NEVER came apart once..

But did you keep those heavy 4-ring pistons?
What I see happening is one of the same problem the 409 had: The weight of the pistons would pull the big end of the rod apart if you ran any kind of rpm with it