Despite the increase in engine size, we’re staying with Anderson Ford Motorsports’ N41 hydraulic-roller camshaft for Sleeper’s new bullet. The N41 boasts 0.512-intake/0.512-exhaust valve lift with 1.6-ratio rocker arms and 222/230 degrees of duration at 0.050. Lobe separation for the cam is 110. It’s a best-of-both-worlds setup for NA or nitrous-injected performance. One of the main reasons for using the N41 is because its valve-lift specs aren’t such that new pistons or fly-cut valve reliefs are required. Remember, our original plan was to top off the original short-block while it was still in the engine bay.