Proform 3/8"-24 Thread Poly Lock Set
Poly locks are designed for use specifically with full roller rockers featuring a set-screw locking device to ensure they remain secure. Sold as a set of 16.
1955-95 Chevrolet Small Block; 262-400 cid; Proform 7/16" Aluminum Stud Girdle Set
Aluminum stud girdles are designed to reduce flexing of the rocker arm studs and help reduce part breakage under high stress. Increased valve train rigidity helps minimize energy loss. For use on small blocks with 7/16"...

1955-95 Chevrolet Small Block; 262-400 cid; Proform 7/16" Aluminum Stud Girdle Set
Classic $156.99 set
1955-95 Chevrolet Small Block; 262-400 cid; Proform 3/8" Aluminum Stud Girdle Set
Aluminum stud girdles are designed to reduce flexing of the rocker arm studs and help reduce part breakage under high stress. Increased valve train rigidity helps minimize energy loss. For use on small blocks through 1986...

1955-95 Chevrolet Small Block; 262-400 cid; Proform 3/8" Aluminum Stud Girdle Set
Classic $149.99 set
Proform 7/16"-20 Thread Poly Lock Set
Poly locks are designed for use specifically with full roller rockers featuring a set-screw locking device to ensure they remain secure. Sold as a set of 16.