Yea a 533 320 is not for you needs at least a 4000 stall and 4.10 or higher gears headers big exhaust. Likes higher compression lots of initial advance 38 total all in by 1200. I had 11 to 1 906 big valves ported. I used one degreed in at 106 4000 stall that flashed to 4400 4.1 gears street strip ran into the 11's with it at 3800 lb .


and if I had one now it would be degreed at 104 or sooner.