how to identify chevy differential
The numbers should let you know what gear-ratio came from the factory the date of production where the unit was assembled and whether the carrier is Positraction or not see charts. Here are the numbers I have found on it.
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Look under the rear of the vehicle.
. Compared to a GM 10-bolt axle for example a semi-float 14-bolt is a nice upgrade. 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. Its simple to locate your vehicles VIN.
See the Spicer Axle Identification information. Its also on the title of your automobile. Stamped s on pass.
All three units have 10 bolts as. Although the 75-inch 10-bolt closely resembles the 85-inch housing you can positively identify the Chevy 75-inch rearend by measuring it. Use the chart below as a guide to measure your carrier.
Commonly 7 or 8. Your differential is the set of gears that allows your vehicles driven wheels to revolve at different speeds by splitting your engine torque in two directions. The oval-shaped cover measures 8 516 inches by 10 916 inches.
Positive identification of the Corporation Chevrolet axle versus the Dana axle is necessary for proper selection and ordering of service replacement parts. Dana axle identification is located on axle tube between Steering Shock Absorber Bracket and the Carrier. 14 bolt 15 inch wide is 105 gear.
Just like a 10-bolt rearend there should be stamped numbers on the axle tube on the passengers side. The gear ratio codes are located on the front passenger side of the differential as shown in the illustration below. Dana design axles from 1977 thru 1980.
This code will tell you the ratio whether it is posi or not any special notes and what plant it was. Dana differentials utilize carrier breaks as well. It was standard under the front of pre-1976 Chevy Blažers and 12-tons solid front-axled F-150s and Broncos and Jeep J-10J-20s and Grand Wagoneers.
First look at the casting number of the center section. May not exactly answer your question but you should be able to look through the pics i saw to help identify your axle. Its imprinted on a metal plate placed in the dashboard just above the steering wheel and on a sticker inside the drivers side door.
Using the charts below you will be able to learn alot about the rear differential in your classic full size Chevy. 11 rows The most noticeable difference is the reinforced cast iron differential in the Dana 61. To determine what series carrier you have place the carrier on a flat surface like a shop table with the ring gear mounting surface up then measure from the mounting surface to the table.
Learn how to quickly identify the three different variations of the GM 14 Bolt differential - the 95 105 and 115 - and the differences in setup for ea. It has a tag under one of the ten bolt center section that indicates it has a 336 ratio. The 12-bolt was used in many vehicles.
Cast numbers on driver side. If it is an early 82-inch 10-bolt Camaro housing the casting number will be 3894859NF. 95 rows 1958-1970 Chevy Rear Differential code Identification.
The distance between the bottom center bolt in the cover and its adjacent bolts is 3 14 inches. I have a 1955 Chevy Bel Air and I have been unable to identify the rear end in it. 14 bolt 12 inch wide is 975 gear.
Accurate identification using the GM RPO code assumes that the rear end has not been previously modified The prefix is usually F G or H when referring to Axle Identification. On the back of the unit count the number of bolts holding the inspection plate cover to the rear end housing. 12 bolt 11 inch wide is 8875 gear.
10 25 50 100. Still the 14-bolt semi-float is a solid axle for a lot of applications. Compared to the 14-bolt full-float axle the 14 bolt semi-float has a smaller ring gear 95 and the axle shaft can not be removed without also removing the wheels.
These differ based on the gear ratio. I found 10 bolt 11 inch wide is 825 and 85 gear. Differential Identification Chart.
They can also be identified by whether the center section is. The best way to be sure of which axle you have is by the Bill of Material Number stamped on the right hand axle tube. A visual chart of different GMChevrolet rear ends is found on Ring Pinions differential types web page see References.
All Chevrolet rear ends can be identified by comparing the gasket shape to an identification chart similar to the one found on Drivetrains differential identification page see References. Here are three simple techniques to assist you to figure out what your VIN code is. DANA 44-1F The Ford-version Dana 44 Twin-Traction-Beam setup is similar to other 44s ring gear diameters are identical but there are no axle tubes and the cover is actually the suspension arm.
The rear end is centrally located between the rear wheels. Spaxtix try googling 2002 gm rear axle bolt pattern. For the 1972-75 Camaro style model 85-inch 10-bolt casting numbers weve found a 410409N and a 410408N.
152 rows 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.
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