Ring & Pinions GM & Chevrolet 8.5"
referred to as the 10 Bolt differential, this differential was utilized GM used this very popular differential in there full size Chevrolets, Chevelle, Chevy II, Camaro and and GTO/Firebird Pontiac products starting in 1970. Full size Blazer, C10, K10 front starting in 1977, K1500 and K2500 Front IFS starting in 1988, the Rear in C10, K10 Blazer in the rear starting in 1980 to 1994.Having problems with your Chevrolet GM 8.5 10 bolt rear end? This 10 bolt rear end is sometime referred to as 10 bolt differential, 10 bolt and 10 bolt truck rear end. We offer the most complete line of rear end parts utilized GM used this very popular differential in there full size Chevrolets, Chevelle, Chevy II, Camaro and and GTO/Firebird Pontiac products starting in 1970. Full size Blazer, C10, K10 front starting in 1977, K1500 and K2500 Front IFS starting in 1988, the Rear in C10, K10 Blazer in the rear starting in 1980 to 1994. Our inventory includes ring gear and pinion sets, including aftermarket and OE gear sets. We are able to supply axles, bearing overhaul kits, carriers, cases, spider and side gears. for the GM 8.5" commonly referred to as the 10 Bolt differential.
Positraction units we offer include Lockrights, Powertrax no-Slip, Auburn, Detroit Lockers, Eaton Posi, TrueTrac and ARB air lockers. We offer the following quality differential products.
 Call 800-216-1632 to check on newest Specials
* Auburn Positraction, 3.08 to 4.10 ratio rear end package; including Positraction, Ring and Pinion Set and Master Bearing Overhaul kit your cost only $799.00 plus S&H * Purchase today and get wheel bearing and seal kit 1991 and earlier for only $24.99, 1992 and later model years wheel bearing and seal kit $49.99. |
Order today mechanics set up tools, you pay only 45.98!
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DurGrip Positraction, 3.08 to 4.10 ratio, rear posi-package includes Positratraction Unit, Ring and Pinion Gear set and Master Bearing Overhaul Kit, your cost $699.00 plus S&H. *Eaton Positraction Unit 3.08 to 4.10 rear posi-package includes Positraction, Ring & Pinion Set and Master Bearing Overhaul kit your cost only $79.00 plus S&H. * Purchase today and get wheel bearing ans seal kit 1991 and earlier for only $24.99, 1992 and later model years wheel bearing and seal kit $64.99. |
| Specifications are provided below to assist you in the identification and setup as well as torque spec's for your Chevy or GM 8.5" differential. |
Applications
What differential ratio do you have? Need information on how to setup ring and pinion backlash Purchase your parts @ drivetrain.com and receive telephone access to experienced differential technician to assist you with installation, we help you solve the problem. |
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GM 8.5 Front & Rear End Specifications
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Chevrolet 8.5" Ring and Pinions Sets and Differential Products
Differential Ring Gear and Pinion Sets |
Quality Gears provide guaranteed performance! |
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| Part Number | OE Number |
Ratio |
Teeth | Price |
| GM10-308 | 1258709 |
3.08 |
40-13 |
$207.33 |
| GM10-342 | 1258710 |
3.42 |
41-12 |
$207.33 |
| GM10-373 | 1259441 |
3.73 |
41-11 |
$207.33 |
| GM10-373IFS |
3.73 |
41-11 |
$241.66 |
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| GM10-411 | 26009753 |
4.11 |
37-9 |
$208.33 |
| GM10-411IFS |
4.11 |
37-9 |
$291.66 |
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| GM10-456 |
4.56 |
41-9 |
$208.33 |
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| GM10-456IFS |
4.56 |
41-9 |
$294.66 |
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| G885488 |
4.88 |
39-8 |
$241.66 |
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| G885513 |
5.13 |
41-8 |
$241.66 |
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| G885342IFS |
3.42 |
41-12 |
$241.66 |
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| G885373IFS |
3.73 |
41-11 |
$241.66 |
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| G885411IFS |
4.11 |
37-9 |
$241.66 |
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| G885456IFS |
4.56 |
41-9 |
$241.66 |
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| Is your GM 10 Bolt to weak for your application see our 14 Bolt drop-in replacement differential assembly, it is the answer to your problem. You can use your existing wheels and tires. | ||||
GM/Chevy Quality Differential Parts
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Description |
Part Number |
Price |
Order above high performance synthetic oil and friction additive combo kit at time of order for ring and pinion or bearing overhaul kit and pay only $49.95 plus S&H, a $54.00 value. Red Line Oil Products that we recommend. |
| Case, Empty 8.5" 2.73 -UP OEM |
$116.67 |
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| Case, Loaded 8.5" 28 spline 2.73 up |
$225.75 |
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| Case, Loaded 8.5" 30 spline 2.73 up |
$235.75 |
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| Bearing/Overhaul Kit 8.5" Rear 1998 Older no-posi |
$86.76 |
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| Bearing/Overhaul Kit 8.5" Rear 1998 Older with-posi |
$97.77 |
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| Bearing/Overhaul Kit 8.5" Front |
$97.33 |
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| Internal Kit 8.5" 28 spline Open (spider/side gears, cross shaft thrust washer) |
$123.99 |
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| Internal Kit 8.5" 30 spline Open (spider/side gears, cross shaft thrust washer) |
$123.99 |
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| Installation Kit use when installing a new ring and you don't what new bearings . Kit includes new ring gear bolts, pinion seal, nut, crush sleeve, shims. Carrier shims marking compound and gasket. |
$63.75 |
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| Axle 28 Spline, 82-88Jimmy/Blazer, 81-88 Chevy P/U s0 series, 81-87 GMC 1500 Series, 81.88 Suburban 10 & 1500 series. 5 holes, R&L. 31 5 /16" length. |
$140.99 |
Installation Tool, Your Cost $48.98 + S&H. |
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| Axle 30 Spline, with IFS 4WD 88-98 Chevy Truck 1500 series, 88-98 GMV 1500, 92-98 Suburban 1500, 92-98 Tahoe/Yukon, 6 hole L&R. 33" length. |
$120.99 |
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| Axle 30 Spline Van 88-95 10 & 20 Series, 88-95 GMC Van 1500 & 2500 Series, 5 hole R&L 33 5/16" length. |
$140.90 |
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| Axle 28 Spline Van 75-88 Chevy Van 10 Series, 79-88 Chevy Van 20 Series, 75-88 GMC Van 10 Series, 79-88 GMC Van 20 Series, 33 5/16" length. |
$124.17 |
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| Axle 30 Spline 2WD 88-98 Chevy & GMC Truck 1500, 92-98 Suburban 1500, 92-98 Tahoe & Yukon, 5 hole R&L 31 13/16" length. |
$124.17 |
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| Axle 28 Spline 2WD 79-89 Blazer, Jimmy, 79-87 Chevy& GMC Truck C10/C1500, 79-89 Suburban C10/C1500, 5 hole R&L 31 3/8" length. |
$114.17 |
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| Axle 30 Spline 2WD 88-91 Blazer & Suburban 10/1500, 5 hole R&L 31 3/8" length. |
$126.86 |
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| Axle 28 Spline 73-77 Chevelle & El Camino 5 hole R&L 30 7/16" length. |
$136.97 |
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| Axle 28 Spline 73-77 Chevelle & El Camino 10 hole R&L, 30 7/16" length. |
$ 302.00 |
EV Kit includes bearings, seals and studs. 10 holes allow for dual bolt patterns to allow for upgrading to larger studs. | |
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| Seal, Axle Car 2.25 Outside Diameter |
$5.57 |
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| Seal, Axle Truck 2.535 Outside Diameter |
$5.57 |
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| Seal, 4x4 Front Axle Shaft Inner |
$16.98 |
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| Pinion Seal Rear |
$15.37 |
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| Pinion Seal 4x4 Front |
$17.50 |
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| Bearing, Axle | Available to many to list please call for quotation. | ||
| Differential Cover GM 1970 up 1500 Truck, Suburban 1500 & 2500, Blazer, Vans & some Cars, Increase the fluid capacity, you will find that the fluid will run 15 to 20 degrees cooler. 1.5 quarts to 4 quarts, 3 1/4" overall height   |
$255.00 |
Differential GM/Chevy 8.5 inch Positraction Units
| Description |
Part Number |
Price |
What's the difference in Positraction's? Differentials what's the Difference |
| ARB Airlocker 28 Spline 2.73 and up |
$1115.80 |
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| ARB Airlocker 30 Spline 2.73 and up |
$1115.80 |
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| Auburn Limited Slip Positraction 28 Spline |
$448.71 |
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| Auburn Limited Slip Positraction 30 Spline |
$480.76 |
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| Detroit Locker 28 Spline |
$808.19 |
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| Detroit Locker 30 Spline |
$808.19 |
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| Detroit Tru-Trac 28 Spline Front |
$571.25 |
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| Detroit Tru-Trac 28 Spline Rear |
$529.16 |
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| Detroit Tru-Trac 28 Spline Rear |
$529.16 |
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| Eaton Large Hub GM Car, 1971-1988, GM Truck 1980-1988, 28 spline, 2.76 & up |
$529.05 |
Recommended replacement for non-repairable non-working GM stock Gov-loc positraciton | |
| Eaton Large Hub GM Car, GM Truck 1988, & later 30 spline, 2.76 & up |
$529.05 |
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| LockRight 1/2 Ton Pickup, Jimmy, Blazer, Suburban 77-88 Front 28 Spline |
$290.59 |
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| LockRight 1/2 Ton Pickup, Jimmy, Blazer, Suburban Thru 88 Rear 28 Spline |
$290.59 |
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| LockRight 1/2 Ton Pickup, Jimmy, Blazer, Suburban 30 Spline 89-98 |
$290.59 |
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| no-Slip Powertrax 28 spline |
$445.96 |
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| no-Slip Powertrax 30 spline |
$445.96 |
Differential Assemblies GM/Chevrolet
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Drum to Drum Disk to Disk - complete assemblies including axles, ring gear, pinion, internal kit to brake flanges some units even have brakes including hubs. | |
| Description |
Part Number |
Price |
| GM 10 Bolt 8.5" Open Carrier with drum brakes & 6 lug axles |
$1010.54 |
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| GM10 Bolt 8.5" Open Carrier with drum brakes & 5 lug axles |
$1100.00 |
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| GM10 Bolt 8.5" front axle Open Carrier 3.07 Ratio |
$955.53 |
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| GM8.25" front axle IFS Open Carrier 373 Ratio |
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$966.85
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