Another question...The heads that came with my block arejust standard 360 heads with 1.88" (i think) intake valves. When the heads are reworked, should I enlarge the intakes too 2.02". Would this give my more HP or a better running engine?
You could probably make your 375 HP a reality with the 2.02s but at a pretty high RPM. You'll likely not turn such on the street so it's really money wasted, IMO. I would stick with the 1.88s.