Originally Posted by Gerry0983@hotmail.com
Does anyone know how much difference there is in a 28 spline vs. a 31 spline. I know the 31 holds more weight but other than that is there really much more difference. My ranger has a 28 spline 8.8 and i think the 31 is only better for hauling heavier stuff. Right?
The 31-spline Ranger 8.8 axle assembly is rated for 3600 lbs. max compared with 2750 lbs. for the 28-spline. It doesn't matter much for carrying capacity though since either axle can handle more than a Ranger's rated payload.
For a Ranger, especially a 4x4 Ranger with its low range torque multiplication, an important difference is in the inner axle shaft strength. The 31-spline shaft is about 25% larger in cross section which should make it roughly that much stronger in torsion.