Dyno'ed My 360..it's a pig..what next?

MRL Performance said

It drops power after 4750 rpm there is no rpm in this engine it will never make power with this setup. you need to address heads and cam and carb
First thing to go would be the valves. invest in good high performance valves (2.02/1.60)and a really good valve job not a std 3 angle but a good 5 angle. next would be the cam I would pick a voodoo 703 for this build. A inexpensive QF Slayer carb 750 will work very well.

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This here ^^^^^^^ seems the best advice to me. It all comes down to how much money you want to spend though. IMO, everything you have (cam, carb, headers, and valves/heads) are too small for 360 ci. If you have to piece things together get bigger valves/or complete heads first, and then go from there, cam, carb, and headers. Also, everyone's definition of a street cruiser is different, I know people who consider mid 11 second 4spd cars with 4:30-4:56 gears street cruisers. Good luck and hope you get it ironed out.