cam help

185 with a big cam like that? You can't go smaller or with one that develops cylinder pressure and run pump fuel of any kind. Your exhaust port doesnt flow very well, I would not runa single pattern cam, or the larger headers. I'd be looking at the TL300S8 Comp solid. It will need matching springs, maybe retainers and locks too. But it's 266°@.050 intake and 274°@.050 exh, and a little bigger, so check piston to valve clearance with what you have.