i have a ‘71 Plymouth Duster that i want to upgrade the rear end in. i am having a hard time finding an 8 3/4 that will fit it. does anyone know of any axles that are narrow enough for the Duster yet will withstand around 500 horsepower?
Some get lucky with stock (maybe not stock to your vehicle but un-modified) axles for a while but any stock 8 3/4 will not hold up to 500hp. Best bet is to have one built (currie, dynatrac, etc.). Or beef up a stocker with at least axles, bearings, carrier, differential, gears, etc Even then, your still iffy on reliability with stock housings, tubes, carrier, etc.
