What size is my rear differential?
The size of a rear differential, or rear end, is determined by the diameter of the ring gear inside the differential housing.
How hard is it to change a rear differential?
Bearing replacement on your rear differentials can take up to five hours and require special tools to push them in and out. Gear Replacement. Chipped and worn down teeth on your differential gears also cause the noises you hear when these parts go bad.
How do I identify my Chevy rear differential?
Identify your GMC or Chevrolet rear end gear ratio by the RPO Codes, usually located on the placard labeled “Service Parts Identification” inside the drivers door panel or glove box.
How do I know what rear differential I have?
Without an ID tag, differentials are identified by the number of cover bolts, the distinctive shape of the cover, the number of ring gear bolts, and ring gear diameter. They can also be identified by whether the center section is an integral or dropout design.
Do bigger tires raise or lower gear ratio?
If the Tires Are Bigger, the Gears Should Be Lower. Going to lower gears (ironically, a numerically bigger ratio) will increase the rpms of an engine (taking for granted the same diameter tire and going the same speed).
What is the best gear ratio for a truck?
The most popular rear end ratio in trucks today is the 3:55, which sort of averages towing power and fuel economy. This is a good ratio for the occasional towing or hauling individual. For a person who tows more often, and heavier loads, the 3:73 or 4:10 may be more appropriate.
How do I identify my differential?
How much does it cost to replace rear differential?
The cost of replacing a rear differential depends on the degree of the repairs that need to be done. Just a few parts to replace will cost significantly less than lots of parts to replace. This could run the bill up from the $200-$400 range to $600-$800. Replacing the rear differential entirely costs a whole lot.
How often should I Change Front and rear differential fluid?
How often you should change front and rear differential fluid depends on your vehicle, driving conditions and differential fluid quality. That’s a vague answer, but it’s true. If you drive your truck primarily on the highway in temperate conditions and rarely tow or haul, you likely don’t need to change front or rear differential fluid very often.
How big is the pinion on a 9 inch differential?
The 9-inch’s very large pinion offset of 2.25 inches requires the pinion to be straddle mounted, which refers to the fact the pinion head has bearings that straddle it on either side. There is a machined roller bearing race on the pinion head portion that points at the differential opposite the tapered bearing races.
How to rebuild 8.8 and 9 inch differentials?
This Tech Tip is From the Full Book, FORD DIFFERENTIALS: HOW TO REBUILD THE 8.8 AND 9 INCH. For a comprehensive guide on this entire subject you can visit this link: