Availability
1966 Proform Parts Engines & Components
Guideplates, Raised, Hardened, 5/16 in. Pushrod Size, Chevy, Small Block, Set of 8
Part Number: PRO-66881
Not Yet Reviewed
Estimated Ship Date: Feb 16, 2026 if ordered today
Estimated Ship Date: Feb 16, 2026 if ordered today
Pushrods, Chromoly, Heat-Treated, 3/8 in. Diameter, 8.350 in. Length, Universal, Set of 16
Part Number: PRO-66427C
Not Yet Reviewed
Estimated Ship Date: Feb 16, 2026 if ordered today
Estimated Ship Date: Feb 16, 2026 if ordered today
Valve Covers, GM Licensed Slant Edge Valve Covers, Tall, Perimeter Bolt Mounting, Aluminum, Black Powdercoat, Chevrolet Logo, Chevy, Big Block, Pair
Part Number: PRO-141-867
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Rocker Arms, Super-Street, 7/16 in. Stud Mount, Full Roller, Aluminum, 1.6 Ratio, Oldsmobile, V8, Set of 16
Part Number: PRO-66860C
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Harmonic Balancer, Internal Balance, Nodular Iron, Natural, 6.75 in. Dia., Avanti, GM, Chevy, Small Block Each
Part Number: PRO-66509
Estimated Ship Date: Feb 16, 2026 if ordered today
Estimated Ship Date: Feb 16, 2026 if ordered today
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster