- Location
- Tampa
Just finished a complete rebuild on my 701 61 x. I ported the cyl, raised exh up 2.5 mm and widened a little. Bored 1 mm over. Triton head, do not know cc's. The motor has 0 hrs, was cold w/ throttle open and got 150 ea cyl. What cranking psi can I safely go to w/ a ported eng and run 93 octane? If I can go higher what is a ball park corallation between amt shaved and increase in compression?