I had a throw together 400 once. We put the 87cc 15 heads on it with a 68 intake and a worked up 78 qjet. Hooker headers and 3” torque tech exhaust with flow masters. 4.10 gears and a Lunati single pattern cam with 235 .050 507” lift. On bald futures street tires it ran 13.20 @ 104mph. Tranny was a stock th350 with a shift kit and a cheap summit 2500 stall. Car was a 79 z28 that weighed 3600lbs.
I would throw on some 16’s, 62’s etc with a healthy cam and headers or ra manifolds with a big non restrictive exhaust.
Another interesting thought would be to port your heads and mill them but I’m not a fan of milling. My brother ported a set of 72cc 15’s in the garage for his 69 firebird and he picked up 4 or 5 tenths and he kept the stock small valves too.
|