383/496 6 pack Build

Personally I don't like the MP stuff. If you buy it, it must be degreed carefully - some are totally horrid quality. In terms of size - when lash is taken out that cam's around .595, and the duraion is around 275° at .050. For a 496" engine that's not a huge cam. The problem is the heads. If they are not ported they won't move enough air to feed it well with any camshaft. I would suggest if you're serious, invest in better heads and have them touched up at least, ported if possible. Then put a modern cam in it.