Built from a 4340 billet steel alloy, this 4.000" LS crankshaft is forged using non-twist machinery, shot peened to reduce stress, heat treated for strength, and nitrided to resist surface wear. Each crankshaft comes with a pre-installed reluctor wheel for added convenience.

LS 4.000" 6-Counterweight Crankshaft:
4.000" Stroke
6-Counterweight Design
Gun-Drilled Main Journals
Standard LS Wet Sump Snout
4340 Forged High-Tensile Strength Alloy
Rated for up to 1,300 horsepower

Average Weight: 53 lbs