Ratech Carrier Shims - GM 7.5" 77-81 w/ 3" Head Bearing, 80-98 w/ 3.125" Head Bearing 20600L Excellent Resilience

Excellent Resilience

Carb recommendations: Edelbrock AVs2 or Performer Series 600-800 cfm

1999-2012 Chevrolet Silverado 2500

Comes with 1/8"

Retard Module Kit

Ratech Carrier Shims - GM 7.5" 77-81 w/ 3" Head Bearing, 80-98 w/ 3.125" Head Bearing 20600L Excellent ResilienceRatech 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