Ratech Bearing Kit - GM 7.5" 77-81 10000405 Back to back dyno testing

Back to back dyno testing proves a gain of over nearly 10 horsepower over running no air cleaner at all Low Stacking Height

33 in Long x 18 in Wide x 16

Ball Bearing Supported Armature/Pinion Gear

562 in Stroke

Ratech Bearing Kit - GM 7.5" 77-81 10000405 Back to back dyno testingPinion and Carrier Bearing Kit GM 7. 5" (77 81) AxleContains Pinion and Carrier Bearings. (Image typical Kit may vary from image but will contain appropriate parts) 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