590 cam

That cam was/is awesome...ran it in 1986 in my s/strip '71 Cuda 340, stock motor, all steel and with an 850DP, Strip Dom int., hdrs etc., was ok on the street but did have a 4200 verter and 4.30's, made 379hp and ran 12.3's@108. My mate runs the .590" in his 440 Dart over here, 3150 all in, 10.1's@130 1.39 60's, 5000 stall, 1050 Dom, the cams just starting to run out of puff at the top end though with 4.56/31's @6800, he says if he shifts anything over 6400 through the gears the car slows.

In a big block that .528 is a guaranteed 11 second combo.

If that .590 cam is running out of steam after 6400 I'd be looking at the heads. That's plenty of cam. That .528 cam is still within 5% of peak power at 6400 RPM.