I have a 383 that I'd like to get some more power from. Here are the current specs. -2 piece RMS 2 bolt main block, cast crank, PM 5.7 rods, hypereutectic pistons. -Profiler 195 Econo ported heads from Chad Speier, 10.6:1 compression -222/230 Crane retro roller cam with 1.6: roller rockers (.543/.563 lift)...same cam as is in the ZZ383, but for an older block -Weiand Stealth dual plane manifold, Demon 750 VS carb -Full length 1 3/4" headers, 3" collectors, 2.5" exhaust all the way with an x-pipe and Borla mufflers -MSD distributor, coil, wires, blah, blah, blah The car has a 700R4 with 3.73's posi out back. The thing just doesn't seem to have the same power as my little 355 with a muncie does...which is strange because the 355 has the same heads, very similar cam, less compression, and 3.73 posi as well. The 383 has maybe 1500 miles on it btw. I'd like to swap in a 4 speed this coming summer...I think that will make it more fun to drive (for me)...but I'm also thinking I want a bigger cam for more power. Will this thing live if I stab a 235 (ish) cam in it? Should I be concerned about the 2 bolt mains? I don't plan to rev it over 6K RPM at all. What's a realistic expectation for this thing given the short block?