It's got the same ring and pinion and differential as the 3/4 tons, just with slightly heavier-duty hub bearings, bigger brake drums, and dual wheels. The gearset was used for years as the final drive for our 1/4 mile dirt track race cars behind 500+ HP small block Chevy engines, and usually taking the output of a Muncie 4-speed locked in 2nd. gear to get the final drive ratio right. They were virtually bulletproof in those applications, even with the spider gears welded solid to get a locked rear end. Full-throttle acceleration down the straightaway, then chop the throttle going into the turns, twice each lap- - - -dozens of laps at a time. The rear end usually goes by the description of "Eaton HO-52".
Any rear end that can stand that kind of treatment, season after season, will last about 3 days past forever on the street, and at least a few minutes when rock crawling!
Jerry
Last edited by Hotrod Lincoln; 01/01/2014 4:51 AM.
