Most of the information was colaberated from Mark and Dan at D&D and the rest is from the local racing shop and personal experence.
Mark claims a little more of a HP gain with the ported heads, and I guess he is the one who would really know as he Dino's the motors. But, I conserve on everything.
I did not know Mark had HD springs. I spoke with him not long ago when we installed his prototype Bosch cam (I think thats the one you got, too), and he did not have anything avaliable at that time. Maybe he found something??? If so, that would sure make it eaiser!
|
