Liberty Performance ZR-4000 Forged 4340 Std Weight Steel Crankshaft, Small Block Chevy 3.750" Stroke, 400 Main, Internal Balance, 2 pc Seal

Designed for street or race engines with substantially more horsepower, LPC’s 4340 Forged Steel Series crankshafts come with many standard features and benefits. Standard features and benefits include: large radius on all journals, lightening holes in all rod throws, precision ground, heat treated, shot peened, chamfered oil holes and nitride hardened for superior wear resistance. All crankshafts must be balanced prior to assembly.

• Crankshaft Material: 4340 Forged Steel
• Stroke: 3.750"
• Main Journal: 400
• Min Rod Length: 5.700"
• Rod Journal: 2.100"
• Rear Main Seal: 2 piece
• Balance: Internal
• Weight: Standard