Ford 9" 28 Spline 4.56:1 Ratio Ring and Pinion Gears Set 8620 Permanent molds provide a tighter

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

The Speedmaster Turbo 400 TH400 Aluminum Competition Transmission is engineered for extreme performance applications

Designed for C4 transmissions in competitive environments where RPM levels approach or exceed 8

The impeller and cavity have been custom CAD designed and engineered to be larger and more efficient to provide flow that is 40 percent greater than stock pumps

allowing it to run cooler and quieter than external units

Ford 9" 28 Spline 4.56:1 Ratio Ring and Pinion Gears Set 8620 Permanent molds provide a tighter