I was recently asked to build a mud truck motor for a friend of mine. I have been searching for a few weeks now what internal parts would get him the amount of power he is looking for. Below I'm listing the parts that I think we are going to use and was wondering if I could get some feed back on how much horsepower we might see out of this build.
Bottom End
Forged crank 4340 3.480 stroke
6" Forged H beam rods
Icon Dome pistons .163/-6.3cc should make 12:1 compression w/64cc heads
Top end
edelbrock victor jr heads
64cc combustion chamber
215cc intake runner
85cc exhaust runner
2.080 intake valve
1.60 exhaust valve

Victor Jr intake Manifold
holley 750

Camshaft

289/288
.553/.561 mechanical roller

1.5 roller rockers

I have built a few flattop piston motors before and have never really put anything bigger than a 510 max lift camshaft. I have been told that I need to check piston to valve clearance. does this cam seem to be big enough that clearance would be a problem? Not that i don't mind checking but if its not necessary then thats one less thing i need to do. Im sure I'm leaving some factors out here but this is my first post here. Thanks