JE Pistons Premium Race Series Piston Rings - 4.320" Bore File Fit 1/16 x 1/16 x 3/16" Thick - Standard Tension 22532410 A molded in threaded brass

A molded in threaded brass insert on the bottom of the knob has 3/8 - 16 threads and comes with a jam nut for quick and easy installation

1973-1974 GMC K35/K3500 Pickup

2 1/2" style features large 12 bolt flange

Callies Performance Products began manufacturing high performance crankshafts in 1989

JE Pistons Premium Race Series Piston Rings - 4.320" Bore File Fit 1/16 x 1/16 x 3/16" Thick - Standard Tension 22532410 A molded in threaded brassProduct Description: Piston Rings Premium Race Series 4. 320 in Bore File Fit 1 16 x 1 16 x 3 16 in Thick Standard Tension Ductile Iron Plasma Moly 8 Cylinder JE Pistons is the leader in high performance forged pistons. JE Pistons has built a reputation that the competition can only follow. JE Pistons has a history of manufacturing the highest quality pistons and components that professional engine builders, race teams, and high performance