Higher pressure and more volume. Those two basic elements are what’s required to pull 720 hp and 695 lb-ft from Edelbrock’s hard-charging LS3 crate engine. The higher pressure results from the ...

Sliding the pistons in the bores and bolting the rods to the crank reveals the amount of real estate available inside the LS3's crankcase. Since a stroker crank pulls the pistons farther down the ...

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 ...