Information, identification, and specifications for the factory installed axles in 1988-2000 Chevrolet/GMC Pickups and SUV’s (GMT400) .
The GM 9.5″ 14 bolt semi floating axle is a common upgrade for people who want to retain their 6 lug wheels and move up to something more robust than the 8.5″ 10 bolt.
The semi-float 14 bolt bridges the gap between the 10 bolt and the big boy 14 bolt FF axle. It is still a c-clip axle, but with a larger 9.5″ ring gear, bigger pinion diameter, and bigger axle diameters than the 10 bolt.
This is the well known “10 bolt”, so named for the number of bolts on the rear cover. The majority of C/K1500 trucks were equipped with this rear axle. Not to be confused with the passenger car 8.5″ differential, or the various other 10 bolts, the truck version is significantly…
The 10.5″ 14 bolt full floating (full floater/FF/floater) is one of the toughest rear axles installed in the GMT400 platform. Its capacity far exceeds what most of the trucks were rated at towing and payload. These axles can be found in C/K 2500 and 3500 pickups, Cab & Chassis Trucks,…