Callies Apex Series Forged Crankshaft - 4 in Stroke - Internal Balance - GM LT-Series MT120BK nitrous percentage or boost (Requires

nitrous percentage or boost (Requires Davis Technologies Holley Module)

1967-1974 GMC G15/G1500 Van

1971-1985 Dodge Colt

300'' intake valves and 1

Typically used to secure slip-on collectors

Callies Apex Series Forged Crankshaft - 4 in Stroke - Internal Balance - GM LT-Series MT120BK nitrous percentage or boost (RequiresProduct 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