Read Part 2 of Head Games as we install cylinder heads and Comp Cams' Gen V hydraulic roller cam on a 1996 Chevy Dually Truck only on sporttruck.com, the official website of Sport Truck Magazine.

The result is a bolt-on 32-valve cylinder head conversion that utilizes a standard-configuration big-block Chevy roller camshaft. How does one "stock" cam control all the extra valves?

When using aftermarket roller lifters, the cam should be prevented from moving forward in the block with a needle roller thrust bearing (E). A plate should be brazed to the timing chain cover, or ...

By 5,700 rpm the 496ci big-block was still making great street power but by 5,800 rpm we saw a dip and by 6,000 rpm it had all but fallen on its face. On the surface, you may think that's not too ...