I have a dart block 383
13.54 cr
ported afr 210 heads
ported super victor
970 cfm 4150 carb
cam is 640 lift with 272 and 264 duration solid roller
through 1 3/4 cramic coated headers
peak torque was 525 @ 5300 rpm
and peak hp was 593 @ 6700 rpm
Guess what on another dyno i would might have made 640 hp, so what i used it for was a tuning tool