These cranks are deigned for street/strip applications, where Lunati quality counts. Best of all, the Sledgehammer™ is priced for the budget–minded enthusiast.
SBC Sledgehammer Crankshaft, Stroke 3.750, 2.448 Main Bearing, 2.100 Rod Journals, Minimum Rod Length 5.700, Crank Weight 52–53 Lbs, 2–Piece Rear Main Seal.

Installation Notes
We Recommend Using premium bearings.
Rod Bearing Part # CR848HP, Main Bearing # MB5142HP
For 2–Piece Rear Main Seal Type Block.


Features

* 4340 Non-Twist Forgings
* Nitride Heat Treated
* Sonic Cleaned
* Held To All GM Specs
* Counterweights Are Clearanced For 5.700 Length Rods
* Comes w/Protective Oil Coating
* Limited Warranty