Ratech Pinion Shims - GM 8.5" 10-Bolt, GM 8.5" 12-Bolt - Ford 7.5" and 8.8" Axles Ignition Wires Fitting is 1/8" NPT on

Fitting is 1/8" NPT on engine end

high exhaust temperatures and forced induction applications or for highest precision feedback

these incredible increases are achieved with a fairly simple installation requiring minimal tools and approximately 2-3 hours of your time

Tall - 3 in

86 Ratio 5

Ratech Pinion Shims - GM 8.5" 10-Bolt, GM 8.5" 12-Bolt - Ford 7.5" and 8.8" Axles Ignition Wires Fitting is 1/8" NPT onRatech offers a complete line of differential service parts. Whether installing a new set of gears or making a repair, Ratech has just what is needed. Ratech wants all racers to know about The Myth that "All Shim Packs in the market are the same. They're just washer shaped steel that come in different thickness." WRONG! Ratech manufacture all of their shims in house on their own machinery. Ratech uses the absolute finest American made Hardened Shim