Originally Posted by 68NovaSS
Why do you say that? Rod length has nothing to do with a motor being internally or externally balanced, particularly when using an aftermarket crank.
OHHHHH yes it does as the 5.7 rod crank uses shorter counter weights and in most cases they are extrernally balanced.
A 6 inch rod crank uses bigger or taller counter weights and can be internally balanced.
Thats why all OEM 400's with their short rods are externally balanced.