1998 gmc whatis the deferance between the 2500 & the 3500 4x4 differentials , can i use a2500 front differential with a 3500 rear end a long the ratiosare th same ?
I want to change gear ratio from 4.56 to 3.73 I have a set of 3.73 differentials out of a 1998 2500 chevy pick up Iwould like to know if they well work.
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i assume that you are talking about the seal at the front of the differential were the drive shaft bolts to the flange,if so this is called the front differential pinion seal,if your talking about the differential cover at the back of the differential(most rearward part of the rear end) this is called the differential cover gasket.
when was the last time you've checked the fluid level in the front differential?
Try this, quickly. these gears don't last long when the fluid level is low, and it's a real big job to replace the gears/differential housing.
On the rear differential there will either be a metal plug or a rubber plug. The metal plug can be removed with a 3/8-inch drive ratchet. the rubber plug can be removed with a small screwdriver. Faceing the axle from the rear will see the plug to the right side on the cover plate. Remember to also check the front differential as well. Hope this will help you.
Standard Differential, Rear W/ SGRX......GL-5ALL TEMPS......80W-90 Standard Differential, Front......GL-5 ALL TEMPS......80W-90 CAPACITIES:Differential, Front..........1.5 litersDifferential, With SGRX Rear..........1.9 liters Saginaw rear axle has a removable rear cover without fillplug.Differential, Without SGRX Rear..........1.8 liters
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