Quote: Besides clipping the valves for clearance, no one mentioned(or I missed it) anywhere about cutting the exhaust valve to 1.900. I agree with BG..old school cams should be set up the old school way. I run a Crane R290 in my 477 and it's clipped with 1.900 exh valves. It wouldn't work(clear) any other way even with moving the cam timing around.
Hi, I ran the old R290 (I still have it)years back also, I assembled the motor with out pistons and rods, with everything just the way it would run and checked it that way, I back cut the intakes and clipped the exh diameter till I had about .050 between the valves at full overlap. Russ
