i'm not an expert on cams, but i'd suggest downloading camquest to get an idea. i'm going with the XE 268 for my 440. this is one of Comps most popular grinds, as it works with the stock converter, has some lope to it (according to them - there are also vids of 400 GTOs, 454 chevelles, etc. that are big blocks with some lope)...it also made the best average HP/TQ numbers for my combination - a little hotter cam may be the XE27?HL or the Lunati Voodoo 60303