Isky 270 Mega Cam P/N 390171

Like YR said I would call and have a custom cam made for the combo,especially with a stock convertor and exhaust manifolds. Most will probably recommend something with split duration on a 112 lobe seperation if I had to guess. There are quite a few of off the shelf cams that will work but you won't spend that much more to get a custom, I would also call a few different companies and see what they recommend.