Originally Posted by viperblue72
I did a 512 using a 4.25 440source crank, 6.7 scat rod and 1.12ch mahle piston thats only 453grams.
I’m sure it was overthinking going with a longer rod for less angle and a lighter piston.
The kits come with 6.535 rod and 1.32 piston.

If this was a 400 block build you did good up
If it was a RB block then the 7.100 long rod is a little better on reducing cylinder wall loading and friction reduction from the thrust loads from the rods from the longer stroke work

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