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All Engine Pro valve springs are manufactured using the highest quality chrome silicon or high tensile chrome silicon vanadium alloy materials
1987-89 (Vin Code 1)
Engine Pro Performance Nitro Black Series Push Rods 3121S9100 Specifications
Engine Pro Performance Nitro Black Series Push Rods 3121S7400 Specifications
Engine Pro Performance Roller Valve Lifters 17-6182-16 Specifications
ARP Chevrolet big block (aluminum heads) 135-7202 All Engine Pro valve springs135 7202 Chevrolet big block (aluminum heads) Specifications Base Thread Length (in.) 0. 85 Base Thread Size (in.) 7 16 14 Effective Stud Length (in.) 2. 35 Guideplate Locator Shank Yes Rocker Arm Nut Thread Length (in.) 0. 85 Rocker Arm Nut Thread Size (in.) 7 16" 20 Applies to: B