I have used Edelbrock's Performer cam in a 340 which resulted in 330 hp/390 ft/lbs that had a very nice 15-16" vacuum. If you wanted more rumpity rump then I wouldn't be afraid of Comp's 268H or something similar. J.Rob
not to hijack this discussion guys, RAMM. I just rebuilt a 1970 340, 9.5 to 1, roller rockers, springs to match the cam, X heads with hardened exhaust valves, LD 340 intake, 650 thunder series carb,stock HO exhaust manifolds and using a Comp's 268H. What do you think my horsepower and torque be. It is going into a 70 Dart, that is just a cruiser and the odd burnout. I hope to not have problems with the lifters? THANKS FOR THE ANSWER. RAMM