Quick question to the motor guys here. What is the differences between building a 124"er using the S&S hot set up kit with the longer rods, vs building one based off a 120R with the shorter rods? Going to back to my small block Chevy days, the longer rod definitely affects the piston compression height. It looks likes the wrist pin is in the oil ring groove on the S&S site. Not to mention the S&S cylinders are taller than stock by 0.96. I know it affects the intake manifold length, but does this affect exhaust fitment? Thanks.

 

Bore diameter.

 

Both are 4.125 bore

 

124 built off 120r with 4.125 jugs