Callies Apex Series Forged Crankshaft - 4 in Stroke - Internal Balance - GM LT-Series MT120BK 300'' intake valves and 1

300'' intake valves and 1

1988-2002 Chevrolet S10

nitrous percentage or boost (Requires Davis Technologies Holley Module)

or converter

600 Mini Sprint Splined Bearing Spacer

Callies Apex Series Forged Crankshaft - 4 in Stroke - Internal Balance - GM LT-Series MT120BK 300'' intake valves and 1Product Description: Crankshaft Apex Series 4. 000 in Stroke Internal Balance 58X Reluctor Forged Steel 1 Piece Seal GM LT Series Callies Performance Products began manufacturing high performance crankshafts in 1989. With many years of engineering and employee experience, Callies has grown to be the industry leader for innovative product design. Callies Performance Products takes pride in staying ahead of the competition with the latest high tech