Save fuel by optimizing differential ratio to your specific vehicle application! If you have changed tire 
diameter optimize your vehicles power by changing differential ratio. Gain back the lost power! Free Tech Support! Considering purchasing parts and have questions call toll free 1-800-216-1632 and talk to an experienced technician.
| Want to search for rear end parts by application, ask the Gear Wizzard |
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We feature Ring Gear and pinion sets, for General Motors, Chevrolet, Ford, Chrysler and Toyota. We are a Dana Distributor and supply genuine DANA-Spicer ring and pinions, and differential parts from only the highest quality aftermarket manufactures. We can supply ring and pinion and differential parts for: American axle, AMC Model 20, C-5 Corvette, Dana 30, Dana 44, Dana 50, Dana 60, Dana 70, Dana 80, Chrysler 7.25", Chrysler 8.25", Chrysler 9.25", Ford 7.5", Ford 8", Ford 8.8", Ford 9", Ford 10.25 and Ford 10.5 . Parts are available for the following General Motors Differentials: GM 7.5", GM 7.625", GM 8.20", GM 8.5" 10 bolt, GM BOP, GM 8.875" 12 Bolt, GM 9.5" and GM 10.5" 14 Bolt. We can also provide differntial parts for Toyota 7.5" and Toyota 8" . Dodge 8.25" and 9.25" ring and pinions are provided. Don't see what you need just give us a call.
Posi-traction units by Eaton, Tru Trac, Powertrax , Detroit Locker, Air Locker, and Auburn Gear as well as factory units and repair parts. Complete third member assemblies as well as locking and limited slip differentials are available. We also offer axles, open and posi carriers, spools, wheel bearings, gaskets, seals and spider gear internal kits for complete installations along with top quality bearing/overhaul kits, driveshafts, yokes, u-joints, u-bolt & strap kits and other differential parts.
Below you will find links to various manufactures differential application guides and parts list. You will also find links to our popular custom differential assemblies, gear ratio verses tire diameter information. A Link for set up procedure for differentials. Installation instructions are provided, order your ring and pinion kits from drivetrain.com and receive direct access with technician to assist you with setup procedures, links to various positraction units and other technical information to assist you is also provide.
| AMC | Dana | LandCruiser |
| American Axle | Ford | Toyota |
| Chrysler | Chevrolet General Motors |
Positraction unit |
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Thinking about changing tire size we can help, consult our Look up chart for determination of engine RPM, gear ratio and tire size combination. Larger tires on lifted truck suffer from loss of power, changing the ring gear and pinion to a lower ratio is the answer.
We have a large stock of high quality differential components:
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Dana-Spicer Auburn - Detroit Locker - Powertrax Ford Corporation General Motors Corporation US Gear
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Ring and Pinions are available in two different product lines: Light duty series designed for every day street performance. Performance series, designed to meet the high performance requirements of the racing world. Gear choices and selection are based on your vehicle performance requirement, we provide you with a wide variety of ratios to select from. |
Custom Differentials Custom and Production differential products. 12 GM Car replacement upgrade for 10 Bolt muscle cars. 9.75 Ford upgrade your Ford 8.8" Differential for off-road and heavy duty applications Instructions for setting up ring and pinion backlash. |
Select a vehicle manufacture or differential category below to find your specific application:
AMC 20 Ring Gear and Pinion Sets
American Axle OE Ring and Pinions
| 7.25" IFS Front Differential |
Chrysler Ring Gear and Pinion Applications (see housing gasket pattern to assit you in identification)
Dana/Spicer Ring Gear and Pinion Applications
Ford Ring gear and Pinion Applications (see housing gasket pattern to assit you in identification)
General Motors Ring gear and Pinion Applications (see housing gasket pattern to assit you in identification)
| Landcruiser | |||
| LandCruiser Front IFS 8.0" | LandCruiser Rear 9.5" | ||
Installation instruction sheet for Ring and Pinion gear installation.
Spanish installation instruction sheet for Ring and Pinion gear installation.
Positraction differentials ensure maximum traction under adverse conditions, they are designed to keep both wheels in a constant drive mode, with the ability to automatically "unlock" to permit necessary wheel speed differentiation. It also eliminates individual wheel spin for better traction and less tire wear.
| To determine your existing gear ratio: Place transmission in neutral and elevate one tire. Mark tire and driveshaft, turn tire two complete revolutions while counting number of turns of the driveshaft. This is your Actual Gear Ratio. i.e. 3 turns + 3.00 ratio, 4.1 turns = 4.1 ratio, etc. |
Example Existing gear ratio and tire size (Dia. in.) 307 ratio and 30 in. tall tires = 2060 engine RPM @ 60 MPH |
| Other Formulas that might be useful! Ratio = (rpm x tire diameter) divided by (mph x 336) RPM = (mph x gear ratio x 336) divided by (tire diameter) |
MPH = (rpm x tire diameter) divided by (gear ratio x 336) Tire Diameter = (mph x gear ratio x 336) divided by (rpm |
See our new 12 Bolt Car conversion for GM 10 Bolt 8.5" muscle cars.
Chrysler Dodge Dana Differential Gasket Shapes
Back to Chrysler Dodge Ring and Pinion Ratio
Chevrolet General Motors Dana Differential Gasket Shapes
Back to Chevrolet GMC Ring and Pinion Ratio
Ford Motor Company Dana Differential Gasket Shapes
