I'm pretty new to the SBC game, most of my engine building experience has been just stock rebuilds and a couple 3800 supercharged performance builds. My question is what is my bottleneck gonna be with this build and what kinda numbers should I expect? Its a 350 bored 60 over cast number 14010207 going to use flat tops in it. My heads are 487's(76cc chambers) with 194 valves and a slight self done port job and gasket match. Edelbrock Performer intake, holley 650 double pumper, full longtube headers and 2 1/2 true dual exhaust. my cam with my 1.6 roller rockers is 512 intake, 520 exhaust 4/7 swap hydro flat tappet, and I got supporting springs for that lift. Going into a 78 elcamino...

Also this motor was previously rebuilt with that 60 over done but I can still see most of the crosshatch, would it be safe to just do a quick hone or is the block junk?

And whats with these sbc's grinding down the cam lobes? This one had about 7 lobes gone and the bottoms of the lifters looked like bowls. Reason I ask is the only other sbc I have messed with a 305 had done the same thing just not quite as bad...

Any help would be greatly appreciated with any of my questions...