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GM 7.5" Ring and Pinion Differential Parts Print E-mail
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Chevrolet GM 7.5" Camaro Ring and Pinion Set

Chevrolet GM 7.5" S10 Ring and Pinion Set

Pontiac 7.5" Firebird Ring and Pinion Set

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laptopcomputergearratio.jpgHaving problems with Chevrolet GM 7.5" or 7.625" rear end?  We offer a complete line of rear end parts for the GM 7.5 & 7.625 inch differential,this differential was utilized by GM in it very popular passenger Car starting in 1977. 1982 GM starting installation in the Camaro and Z28 series vehicles, Pontiac Firebirds and Trans AM began using it in 1982. This differential also is utilized in the S-10 series Blazers and Jimmy. 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.

Positraction units we offer include Lockrights (recommended for off-road only), Powertrax no-Slip, Auburn, Detroit Lockers and TrueTrac .

We are a Dana Spice volume distributor and offer a complete line or ring gear and pinions up to the large Dana 80 differential.

Specifications are provided below to assist you in the identification and setup as well as torque spec's for your Chevrolet/General Motors 7.5" and 7.625" differentials.

 

Applications
Model

Year

GM Passenger Car (Except H body Monza, Vega, Starfaire)

77-93

Camaro, Z28

82-97

Chevrolet S-10 & S-15

77-97

Pontiac Firebird & Trans Am

82-97

 

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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Specifications

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8-5/16" X 10-9/16"
10 HOLES
OVAL Gasket Pattern

 

  • RG Diameter 7.50"
  • 10 3/8" X 18 RH Threaded Bolts
  • PINION Diameter 1.438", 27 Spline

    CASE: 3.08 & Down, 3.23 Numerically Higher

    8620 Material Heat-Treated

    Assembly Specifications:

  • Cover Bolt Ft. Lbs. 20
  • Pinion Bearing Preload In. Lbs 24-32
  • Pinion Bearing Preload In. Lbs 8-12 Used
  • Ring Gear Backlash .005-.009
  • Ring Gear Bolt to case Ft. Lbs. 90
  • Side Bearing Caps Ft. Lbs. 60

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GM 7.5" 7.625" Differential Ring and Pinion Sets  
Part Number OE Number

Ratio

Teeth

Price

 
GM7.5-273 OEM

2.73

 

$296.00

 
GM7.5-308 14048380

3.08

40-13

$208.33

Quality Guaranteed Performance
GM7.5-323 14085348

3.23

42-13

$208.33

GM7.5-342 14048378

3.42

41-12

$208.33

GM7.5-373 14048379

3.73

3.73

$208.33

GM7.5-373OE  

3.73

3.73

$260.30

GM7.5-410 14059087

4.10

41-10

$208.33

 
GM7.5-456  

4.56

 

$287.50

 

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Differential Parts & Bearing Overhaul Kits

Description

Part Number

Price

 
Case, Empty 7.5" 3.23 - 4.56

SA65-2015

$122.82

 
Case, Empty 7 5/8" 2.73 - 3.08

SA65-2015A

$122.82

 
Case, Empty 7 5/8" 3.23 - 4.56

SA65-2015B

$131.03

 
Bearing/Overhaul Kit 7.5/7 5/8"

DTSR7.5GRMK

$93.83

 
Bearing/Overhaul Kit GM 7.5 82 Newer

DTSR7.5GRMK

$93.83

 
Installation Kit (no bearings)

MWGM7.5IK

$50.00

See the kit.

Internal Kit 7.5" 26 spline (spider/side gears, cross shaft thrust washer)

SA852015

$123.33

 
Internal Kit 7 5/8" 28 spline (spider/side gears, cross shaft thrust washer)

SA852015B

$123.33

 
Axle 7.5" 26 Spline, 5 holes, 29" length, R&L 4WD 83-89 S Series Blazer, 83-89 S Series Jimmy, 83-89 GMC S15, 83-89 Sonoma

PA5567

$120.32

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Your Cost $48.98 + S&H.

Axle 7.5" 28 Spline 5 holes, 29" length, R&L, 4WD 88-98 Series Blazer, 88098 S Series Jimmy, 94-96 Olds Bravado, 88-98 Chevy S10, 88-98 GMC S15, 88-98 Sonoma

PA5566

$120.32

Axle 85-89 Astro Van 26 Spline Left Side

PA5737

$112.67

Axle 85-89 Astro Van 26 Spline Right Side

PA5738

$112.67

Axle 90-98 Astro Van 28 Spline Left Side

PA5739

$112.67

Axle 90-98 Astro Van 28 Spline Right Side

PA5740

$112.67

Bearing, Axle 2.25 Outside Diameter

TIM5707

$12.86

 
Seal, Axle

TM86605

$2.08

 

GM 7.5" 7.625" Positraction Differential Options

Description

Part Number

Price





What's the difference in Positraction's?

Check out Differentials what's the Difference?

Auburn Limited Slip Positraction 2.73 -3.08 26 spline 1979 newer

542058

$498.95

Auburn Limited Slip Positraction 3.23 -4.56 26 spline 1979 newer

542057

$498.95

Auburn Limited Slip Positraction 2.73 -3.08 28 spline 1988 newer

542041

$498.57

Auburn Limited Slip Positraction 3.23 up 28 spline 1988 newer

542040

$498.95

Eaton Detroit Locker 26 Splines more information & video
 162C58A  $740.86 Free freight
Eaton Detroit Locker  28 Splines
 162C59A  $740.86 Free freight
Eaton Truetrac 26 Splines more information & video  911A319 $490.67 Free freight
Eaton Truetrac 26 Splines 
 911A415 $490.67 Free freight
LockRight 7.5" 26 spline

1930

$352.02

LockRight 7 5/8" 28 spline

1931

$350.31

LockRight 7 5/8" 26 spline

1932

$350.31




no-slip Powertrax Positraction 26 Spline

92-0775-2605

$425.25




 
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