[PAUL K]

Originally Posted by johnta1

If the only changes were cam, rods and heads, I'd say the combo needed tuned to those new changes? Intake specs to work with the heads, carb change to work with the new specs, cam wrong for head specs etc.?


What was the afr, bsfc, rpm range etc?

I believe the heads were direct replacements for the original KRE heads that cracked.

I'd be looking to see if the porting program was changed to prevent the cracking issue. This problem was in a critical area of the port. Could easily knock down the power numbers considerably.

[johnta1]

Thanks, I thought with the heads they were ported for more flow than previously. (why he changed the cam also)