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Home arrow Positraction arrow LockRights & no-Slip arrow LockRight Chevrolet GMC




  

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LockRight Chevrolet GMC Positraction Print E-mail
 Off-road applications requiring extreme traction output and high-strength! chevlogo_large.jpg

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Chevrolet/GMC Locker Application Guide

Powertrax LockRight gear sets enable easy conversion of an "open" differential to an automatic positive-locking differential. The Powertrax Lockright Locker is the original locking differential that can be easily installed in existing differential case assemblies without any special tools or setup equipment. It has been widely used in demanding off-road applications around the world requiring extreme traction output and high-strength.

For traction output, strength and durability, the Lockright. rivals much more expensive competitive lockers sold only as complete case replacement assemblies. It is a leading product because the Lockright delivers as much traction output, its end assembly is exceptionally strong, is much less expensive, and does not require professional installation (because the complete case assembly does not have to be replaced and realigned with precision calibration equipment). An excellent choice for off-road vehicle applications, performance enthusiasts also began using the Lockright to satisfy their extreme traction requirements for racing, hot-rods and muscle cars.  LockRights are available for the following GM and Chevrolet vehicles S10, S-15, Blazer, Sonoma, Astrovan, 1/2, 3/4 and 1 ton pickups offroad applications.

The Lockright operation is fully automatic. Designed to send the engine power to the wheels with the most traction, the Lockright will help get you where you want to go. While traveling straight the Lockright will lock the axles together similar to a spool. However, when the wheels need to differentiate in a turn, the Lockright will allow the outside wheel to rotate faster to complete the turn. The internal gears on the Lockright will overrun each other to allow this differentiation.

When operating off-road, the Lockright will always send the engine power to the wheels that need it most. For example, if you are rock crawling and one wheel is in the air (complete loss of traction), the wheel on the ground will receive the engine power and keep you going. Whether it be snow, sand, mud, ice, etc... the Lockright will give you the traction you need.

Although smoother than other competitive locking differentials, the brute force characteristics of the Lockright limit general application in less tolerant and more mainstream applications. In some vehicles, you will hear a light clicking noise as the gears are overrunning themselves and allowing the wheels to differentiate in a turn. This is normal of most lockers on the market today. We recommend the Lockright for vehicles that are primarily driven in severe driving conditions or are used for recreational off-road The patented design provides the best traction value for General Motors Chevrolet and GMC S10, S15, 1/2 ton, 3/4 ton and 1 ton pickup truck and 4x4's used both on-and off road they have the following benefits and features:

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  • Rugged Power Delivery to Both Wheels
  • Provides Huge Traction Improvement
  • Greatly Exceeds Capabilities of Limited-Slip/Posi's
  • Proven Off-Road Performance
  • Automatic Operation (no compressor required)
  • Uses No External Controls

 

  • Helps Prevent Axle Failure
  • Brute-Force Dependability
  • Easy Installation
  • Broad Model Coverage
  • Works in Front and Rear Differentials Assemblies
  • Controls wheel spin provides maximum traction
Installation instructions available at our site

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Vehicle Model Year Front Axle (spline) Lock Right Part Num. Your Price Rear Axle (spline) Lock Right Part Num. Your Price
Chevrolet/GMC              
S-10, S-15 Pickup S-10 Blazer, Sonoma, Astrovan Thru '88 GM 7.2" IFS (26)

1935

$407.17 GM 7.5" (26)

1930

$397.14
Thru '88 GM 7.2" IFS (26)

1935

$407.17 GM 7 5/8" (26)

1932

$395.75
'88-98 GM 7.2" IFS (26)

1935

$407.17 GM 7 5/8" (28)

1931

$395.75
Sonoma 4.3 liter, S-10 ZR-2 Thru '98 GM 7.2" IFS (26)

1935

$407.17 10 Bolt, 8.5" (30)

1921

$395.75
1/2 Ton Pickup, Jimmy, Blazer, Suburban '89-98 GM 8.2 IFS

N/A

  10 Bolt, 8.5" (30)

1921

$395.75
Thru '88 10 Bolt, 8.5" (28)

1920

$328.57 10 Bolt, 8.5" (28)

1920

$328.57
'89-98 GM 8.2 IFS

N/A

  14 Bolt, 9.5" (33) Nt(1)

1950

$434.24
'77-81 10 Bolt, 8.5" (28)

1920

$328.57 12 Bolt, 8.875" (30)

1910

$335.75
'69-79 Dana 44 (30)

2410

$324.24 12 Bolt, 8.875" (30)

1910

$335.75
3/4 Ton Pickup, Suburban, Van '89-98 GM 9.2 IFS

1950

$434.24 14 Bolt, 9.5" (33) Nt(1)

1950

$434.24
'89-98 GM 9.2 IFS

1950

$434.24 14 Bolt, 10.5" (33) Nt(1)

1950

$434.24
'80-88 10 Bolt, 8.5" (28)

1920

$328.57 10 Bolt, 8.5" (28)

1920

$328.57
'82-88 10 Bolt, 8.5" (28)

1920

$328.57 14 Bolt, 9.5" (33) Nt(1)

1950

$434.24
'77-88 10 Bolt, 8.5" (28)

1920

$328.57 14 Bolt, 10.5" (30) Nt(1)

1955

$348.58
'73-80 Dana 44 (30)

2410

$324.24 14 Bolt, 10.5" (30) Nt(1)

1955

$348.58
'75-77 Dana 44 (30)

2410

$324.24 Dana 60 (35)

2620

$375.20
'69-74 Dana 44 (30)

2410

$324.24 Dana 60 (30)

2610

$376.06
Pickup, Van, Motor home '89-98 GM 9.2 IFS

N/A

  14 Bolt, 10.5" (30) Nt(1)

1955

$348.58
'88-98 GM 9.2 IFS

N/A

  14 Bolt, 9.5" (33) Nt(1)

1950

$434.24
'92-98 GM 9.2 IFS

N/A

  Dana 80 (37 )

2811

$448.58
'98-91 GM 9.2 IFS

N/A

  Dana 70 (35 )

2710

$448.58
'75-92 GM 9.2 IFS

N/A

  Dana 60 (35 )

2620

$375.20
'73-88 Dana 60 (35)

2620

$424.24 14 Bolt, 10.5" (30) Nt(1)

1955

$348.58
'76-88 Dana 60 (35)

2620

$424.24 Dana 70 (35)

2710

$448.58
Notes:

We have made every effort to make this list as accurate as possible.

Identical model vehicles may have different axles or differentials than stated in this list depending on the original options ordered. It is advisable to check the vehicle to absolutely determine which differential and axle are present.

The LockRight is designed to fit into standard open differentials only. Always check the differential case, thrust washers, and pinion shaft for excessive wear or damage.

Notations (Nt)

1. GM 14 Bolt 9.5" differential = semi floating rear end, GM 10.5" differential = full floating rear end.

2. Most ABS differentials are identified by the bill of material designator on the axle tube of 605662-X (X= 1 to 3)

** Dana 60 possible axle spline's: (2610 = 30 spline, 2620 = 35 spline)

**Dana 70 possible axles: (2710 = 35 spline, 2711 = 32 spline, 2720 = 35 spline with two piece case)

** Dana 80 possible axle spline's: (2810 = 35 spline, 2811 = 37 spline)

Descriptions:

7.5", 8.8" etc....= diameter of ring gear

(30) = number of teeth on axle shaft spline

12 Bolt = number of bolts on differential cover

N/A = not available

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