i am about to swap motors in my shortbox. it currently has a 383 that is a mis-match of parts. 9-1 stealth heads, rpm intake, 750 vac, 17/8" headers 3.21 rear,stock converter it has a summit (around 484 cam) this thing is a dog until about 3g then it turns on.

new engine is a 10-1 383, 60302 voodoo cam, same heads intake and gears with a slightly looser converter.

i would say this engine should be a huge difference over the old combo. cam is just too big to match all the other mods. poorly chosen parts and i knew it.

MP cams are old school. go modern.