Originally Posted by itsonlyairandfuel
I'm running the 402A3LUN,with 4.56, 3000 stall, turbo 400 and 10-1 comp 454. It idles at 10 inches of vacuum, 15 at 3000rpm. Performance easy 7.80@89 MPH in the 1/8 with a DA of 5000 plus. Yours should idle better and be comparable. I used Howards solid EDM lifters with it. Do a search or call their tech line.
That's a fine cam you have there Ron!
James, I didn't look up the specs on your cam but I assume it's a step milder than Ron's & mine. Just a few words of caution though- with the closed chamber heads I'm running I found that I had to relieve the pistons for the valves (exhaust if I remember right) in order to obtain enough valve to piston clearance. My pistons were milled at the time of my original rebuild to give me 9.5 to 1 comp. ratio but without digging through my old reciepts I can't tell you any more specifics about them except that they are forged aluminum.
With any increase in cam you should check for valve/piston clearance anyway, so this is more of a reminder anyway. Good luck.