Callies Apex Series Crankshaft - 4.000 in Stroke - Internal Balance - 58X Reluctor - Forged - 1-Piece Seal - GM LS-Series AA0810AG3S63 Fits Chevy/GMC Truck 73-87 3/4

Fits Chevy/GMC Truck 73-87 3/4 & 1 Ton & 75-00 Dually 2WD-4WD 14-Bolt REAR

105mm Sideways Throttle Body Mounted to 4500 Style Intake

Set Front-to-Rear bias for best performance

thicker decks

Engine Application: Ford 5

Callies Apex Series Crankshaft - 4.000 in Stroke - Internal Balance - 58X Reluctor - Forged - 1-Piece Seal - GM LS-Series AA0810AG3S63 Fits Chevy/GMC Truck 73-87 3/4Product Description: Crankshaft Apex Series 4. 000 in Stroke Internal Balance 58X Reluctor Forged Steel 1 Piece Seal GM LS Series Sold Individually 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