Speed Pro Piston Rings - 4.020 in Bore - Drop In - 1/16 x 1/16 x 3/16 in Thick - Standard Tension H Beam Rod 42" (from engine block lifter

42" (from engine block lifter valley cover flange)

Black Rubberized Fat Grip

Big Block Ford / Cleveland

Patented ratchet mounting systemDerale has been the leader in performance cooling for decades

Simpson's Hybrid Sport

Speed Pro Piston Rings - 4.020 in Bore - Drop In - 1/16 x 1/16 x 3/16 in Thick - Standard Tension H Beam Rod 42" (from engine block lifterSpeed Pro designs and engineers pistons to meet the most demanding street performance and racing conditions. In combination, we draw upon more than 100 years of Speed Pro engine mastery to enhance the piston ring and its seal. Our Speed Pro brand is recognized for being a winner in every form of racing, and is the proven horsepower leader in oval track and drag racing. Hell Fire Rings: Speed Pro Hell Fire rings, manufactured from a specially hardened