This is not a modification for the faint of heart. Once you start taking a Four-Valve, four-cam modular small-block apart, you'll think that the parts will never go back together. Unless you want to ...

The latest GM LS-style engines come stock with free-flowing, rectangular-port heads—they just need a great cam to wake them up. Enter Comp Cams' new LSR series. Available for both late-model one-bolt ...

Besides easily made horsepower, a 347's longer stroke means it makes power a little differently. At its most basic, a longer stroke is simply more displacement, and displacement means torque.

If one thing truly leads to another, you can say the head and exhaust swap we performed on the Balls of Fury (Charlie and Chad Pirchio's '64 Sport Fury) in the August '13 issue (Two Bolt-ons Bring 81 ...