Lunati Sledgehammer Crankshafts

Lunati now offers the new Sledgehammer Crankshaft Series. These cranks are designed for street/strip applications, where Lunati quality counts. Best of all, Sledgehammers are 100% US made, making them a better value than weaker overseas products.
Sledgehammer cranks can be installed right out of the box, due to a factory-applied protective oil coating. They are forged from 4340 non-twist steel, and are 100% US made. This non-twist design produces a crankshaft with higher tensile strength, unlike the cheaper overseas models. All pin arms are edged and detailed, and counter weights are clearanced for 5.700” connecting rods—features usually found only on premium model crankshafts.Use the Sledgehammer in popular small block GM applications. See the chart below for application details and specs.

Key Features and Benefits

• Forged cranks for the budget-minded racer
• 4340 Forged non-twist from US steel, for 100% US manufacturing
• Nitride heat treated and sonic cleaned
• Held to all GM specs
• Comes with a protective oil coating
• Mallory added to improve balancing
• Pin Arms edged and detailed