We took an LS3 block from Summit Racing, added a 3.267-inch stroke crankshaft from a 4.8L, spun it to 8,000, and made 607 hp. The secret to this small-block screamer is the short stroke and good head ...

You might be wary of hanging a heavy hunk of metal on the front of your crankshaft, but a quality racing harmonic damper will actually produce horsepower and help your engine live longer. I have been ...