Quote:

It's 100% the combustion chamber and doesn't matter what shortblock is under it. (Of course, the top of the piston is the bottom of the combustion chamber.) The better the chamber the shorter ignition lead required for max power.

R.




Hmm, I have a 20cc dish piston including the .350 deep valve reliefs so it's not a lot of dish.

Thanks for the answers, I guess I'm in the ballpark at 30 and I'll work from there.


"Follow me the wise man said, but he walked behind"


'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.