Dont plan on it, unless Scot Brown tells me to. Gach ran just over 12-1 with this cam. I run 91, hence the 11.75
I can find out the answer on the dyno. Make a pull with race spiked gas. And when I run 91 the power should be at least the same or a tiny bit more.
I am going to do whatever Marcella and Scott Brown recommend.
John is the reason I chose the 4.5 Scat crank and Callies Ultra rods.
They are the folks behind Mike Leechs program.
More than good enough for me.
They are the folks behind BADDTAs sons crazy little pump gas engine. Another success.
BADDTAs Son heads and manifold came from us.Bill C.