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LS SERIES CRANKSHAFTS
BC performance crankshafts are CNC milled from 4340 non-twist forgings in a stroke range of 4.000", 4.125" and 4.250". Counterweight O.D. is designed for 6.100" to 6.125" length rod, approx. 1875g bobweight. Fully CNC'd on 5-axis machining centers, including oil holes for the best oiling possible. Includes 2 keyways on the snout (OEM is 1 keyway) for added keyway support in heavy duty applications, gun-drilled down the center to lighten it up without compromising strength.

Part # Description # Stroke Crank Pin Main Buy Now Status
BC5456U CRANKSHAFT - Chevrolet LS Series, 4.000" Stroke w/58 Tooth Reluctor Wheel, 4340 Billet, Unbalanced 4.000" 2.0987" 2.558" In-Stock
BC5457 CRANKSHAFT - Chevrolet LS Series, 4.100" Stroke w/58 Tooth Reluctor Wheel, 4340 Billet, Fully Balanced 4.100" 2.0987" 2.558" In-Stock
BC5457U CRANKSHAFT - Chevrolet LS Series, 4.100" Stroke w/58 Tooth Reluctor Wheel, 4340 Billet, Unbalanced 4.100" 2.0987" 2.558" In-Stock
BC5458 CRANKSHAFT - Chevrolet LS Series, 4.125" Stroke w/58 Tooth Reluctor Wheel, 4340 Billet, Fully Balanced 4.125" 2.0987" 2.558" In-Stock
BC5458U CRANKSHAFT - Chevrolet LS Series, 4.125" Stroke w/58 Tooth Reluctor Wheel, 4340 Billet, Unbalanced 4.125" 2.0987" 2.558" In-Stock
BC5459 CRANKSHAFT - Chevrolet LS Series, 4.250" Stroke w/58 Tooth Reluctor Wheel, 4340 Billet, Fully Balanced 4.250" 2.0987" 2.558" In-Stock
BC5459U CRANKSHAFT - Chevrolet LS Series, 4.250" Stroke w/58 Tooth Reluctor Wheel, 4340 Billet, Unbalanced 4.250" 2.0987" 2.558" In-Stock
619.749.9018 ph
619.749.9128 fx
Some products listed are not legal for sale or use on emission controlled motor vehicles, RPM ranges vary on application.Warranty Information Copyright © Brian Crower Inc. All rights reserved.   Follow runBC on Twitter