Ford 9" 28 Spline 4.56:1 Ratio Ring and Pinion Gears Set 8620 Benefit from an easy installation

Benefit from an easy installation and gain in horsepower

allowing it to run cooler and quieter than external units

Couple this Hi-Ram intake with the high flowing LS1 style cylinder heads has outstanding potential for naturally aspirated and forced induction applications

Permanent molds provide a tighter grain casting thereby reducing the occurrence of porosity which can mar the polished finish

Switch out your weak and thin factory retainer plates with Speedmaster heavy-duty bearing retainer plates and make your ride a lot safer

Ford 9" 28 Spline 4.56:1 Ratio Ring and Pinion Gears Set 8620 Benefit from an easy installation