so I want to put a cam in my 390 that will wake it up a decent amount but I need one that won't mess with the vacuum action in the tranny anybody have any suggestions?
I had a 68 250 4spd 4.10 gears. I put a 390 together for it, stock longblock, cast iron 4bbl ford dual plane intake. I called Berry Cam from lester praire mn. He sold me on a 390 X-GRIND. They developed it back in the 70s for CO-OP trucks with spray rigs in them. Its a torque type cam. So in 4th gear at 500rpm it would climb pretty good, once it hit 1500 it really turned on and pulled like a freight train until 3800-4000. Which is fine, i never wound it over that anyway. The price with lifters was the same as the lowest kit Jegs offered at the time (2004)