1978 GMC G25 Differential Parts
Choose your Engine for your 1978 GMC G25
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Product
Price
- GM 10.5 in.; 14 Bolt; 30 Spline; 4.10 And Down Ring Gear Pinion Ratio; 1.50 in. Axle Shaft Diameter
- Detroit Truetrac® Differential; GM 10.5 in.; 14 Bolt; 30 Spline; 4.10 And Down Ring Gear Pinion Ratio; 1.50 in. Axle Shaft Diameter; Rear;
- Detroit Truetrac® Differential
-
Features:
- Helical Gear Limited Slip Differential
- Optimized Torque Bias Ratios Deliver Max Acceleration And Handling
- Automatic Engagement
- Works In Forward And Reverse
- Ideal For Most Vehicles
- Durable
- Smooth
- Quiet Operation
- No Special Lubrication Or Friction Modifiers Needed
- The Detroit Truetrac is a helical-gear style, limited-slip differential that maximizes wheel traction and enhances driving characteristics. Maintenance-free, it features smooth, automatic operation in forward and reverse. Its versatility makes Detroit Truetrac the ideal traction solution for almost any type of vehicle.
Additional Fitment Information:
| Vehicle | Block | CC | Position | Engine | CID |
|---|---|---|---|---|---|
| 1978 - GMC G25 | L | - | Rear | 6 Cyl 4.8L | 292 |
- 35 Spline; 1.50 in. Axle Shaft Diameter; 4.10 And Down Ring Gear Pinion Ratio; Rear Dana 60
- Detroit Truetrac® Differential; 35 Spline; 1.50 in. Axle Shaft Diameter; 4.10 And Down Ring Gear Pinion Ratio; Rear Dana 60;
- Detroit Truetrac® Differential
-
Features:
- Helical Gear Limited Slip Differential
- Optimized Torque Bias Ratios Deliver Max Acceleration And Handling
- Automatic Engagement
- Works In Forward And Reverse
- Ideal For Most Vehicles
- Durable
- Smooth
- Quiet Operation
- No Special Lubrication Or Friction Modifiers Needed
- The Detroit Truetrac is a helical-gear style, limited-slip differential that maximizes wheel traction and enhances driving characteristics. Maintenance-free, it features smooth, automatic operation in forward and reverse. Its versatility makes Detroit Truetrac the ideal traction solution for almost any type of vehicle.
Additional Fitment Information:
| Vehicle | Block | CC | Position | Engine | CID |
|---|---|---|---|---|---|
| 1978 - GMC G25 | L | - | Rear | 6 Cyl 4.8L | 292 |
- Dana 44; 30 Spline; 3.73 And Down Ring Gear Pinion Ratio; 1.31 in. Axle Shaft Diameter
- Eaton Elocker™ Differential; Dana 44; 30 Spline; 3.73 And Down Ring Gear Pinion Ratio; 1.31 in. Axle Shaft Diameter;
- Eaton Elocker™ Differential
-
Features:
- Electromagnetic Locking Differential
- Driver controlled push-button operation
- Most Reliable On-Demand Differential
- 4 Pinion Net-Forged Gear Design For Max Strength And Durability
- Eaton NGR locking rocker switch and wiring harness included
- Works In Forward And Reverse
- The Eaton ELocker is an electronic, selectable differential designed for drivers that need traction on-demand. At the flip of a dash switch, drivers can go from open to 100-percent locked. A second flip of the switch deactivates the unit to resume normal driving. The ELocker is the most reliable on-demand differential, featuring selectable operation and net-forged gears for added strength.
Additional Fitment Information:
| Vehicle | Block | CC | Position | Engine | CID |
|---|---|---|---|---|---|
| 1978 - GMC G25 | L | - | Front | 6 Cyl 4.8L | 292 |
- G.M. 12 Bolt
- Selectable Full Locker w/Limited Slip; For Use w/2.76-3.42 Ratio; 3 Series Case; 30 Spline 8.875 in. (12 Bolt)
- ECTED MAX DIFFERENTIAL
- Auburn Gear Ected Max
-
Features:
- Selectable Full Locker And Limited Slip In One Unit
- Can Be Engaged/Disengaged At Any Safe Road Speed
- Smooth Quiet Operation
- Can Be Use With Or Without Lockout Hubs
- Made From 9310 Heat Treated Billet Steel
- Backed By 1 Year Warranty
- Covered w/4 Yr Differential-Replacement Exchange
- Made In The USA
- The ECTED Max is a selectable traction device; an on/off switch is mounted near the driver. When off–the clutch pack,located behind the side gear provides the limited slip mode. As torque increases, the separating forces within the differential gears increase, causing the clutch pack to be compressed and thereby providing bias torque to the high traction wheel–your performance limited slip differential action. When selected on, current is sent to the electromagnetic coil. The coil is retained by a clip that fits over one of the bearing cap bolts, making it non-rotational. The coil rides on a ball bearing. The ball bearings spin with the differential case. The coil creates a magnetic flux so that the pilot cone is pulled into engagement with the differential case. This frictional engagement causes the bearing balls to ride up on a ramp machined into the side gear. This radial travel of the balls also causes lateral movement of the side gear. This applies a force onto the center block. The center block has an elongated hole that the center pin fits through, allowing it to float. The center block applies force to the opposite side gear, compressing the clutch pack giving the user a solid axle assembly–the spool/locker performance you desire at the strip/off-road. ECTED Max gearing is made from aircraft quality, 9310 heat-treated billet steel. Tough as nails! ECTED Max can be switched on or off on the fly, at any road speed. ECTED Max does not have any shift forks or pins that must be lined up to obtain locker mode. ECTED Max is quiet. Good-bye to noisy lockers! ECTED Max is backed by industry-leading 1 year warranty, like all Auburn Gear Performance Differentials. ECTED Max is backed by the industry-exclusive program. D-REX=Differential–Replacement EXchange Program. ECTED Max can be used in front axle applications–with or w/out lockout hubs. ECTED Max is the only selectable locker offering both limited slip and locker modes. Forget the rest-go with the best!
Additional Fitment Information:
| Vehicle | Position |
|---|---|
| 1978 - GMC G25 | Rear |
- 8.5in./8.6in. GM 2.73/Up Dura Grip Limited Slip; 30spl; Composite Clutches
- 8.6 in. 10 Bolt; 30 Spline; 2.73 And Up GM 8.5 in.; 30 Spline; 2.73 And Up~Yukon Dura Grip Positraction / Limited Slip; GM 8.5 in. Rear; 30 Spline; 2.73 And Up; 1.781 in. Bearing Journal
- Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction; giving you the confidence and performance you need across a wide variety of terrains.
- Yukon Dura Grip Differential
- Product Attributes:
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: This Product Can Expose You To Chemicals Including Arsenic; Which Is Known To The State Of California To Cause Cancer. For More Information; Go To Www.p65warnings.ca.gov.
-
Features:
- Fits 8.5 in./8.6 in. GM w/30 Spline Axles
- Fits 2.73 Gear Ratio Up
- Fully Rebuildable Design And Proudly Assembled In The USA
- Limited Slip Differential w/Composite Clutches
- All Units Are Backed By Extensive Product Testing And State-Of-The-Art Software Design
- Yukon Dura Grips Feature 4320 Chromoly Spider Gears For Ultimate Durability
- Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance you need across a wide variety of terrains. The Dura Grip is engineered for long life and is completely rebuildable. Dura Grips are constructed with a high strength nodular case, forged 4320 chromoly spider gears, and composite clutches. For unmatched positraction performance, the Dura Grip is the ultimate choice. When your vehicle demands performance, durability and strength, choose Yukon Dura Grip.
Additional Fitment Information:
| Vehicle | Block | CC | Position | Engine | CID |
|---|---|---|---|---|---|
| 1978 - GMC G25 | V | - | Front | 8 Cyl 6.6L | 400 |
- 8.5in./8.6in. GM 2.73/Up Dura Grip Limited Slip; 30spl; Composite Clutches
- 8.6 in. 10 Bolt; 30 Spline; 2.73 And Up GM 8.5 in.; 30 Spline; 2.73 And Up~Yukon Dura Grip Positraction / Limited Slip; GM 8.5 in. Rear; 30 Spline; 2.73 And Up; 1.781 in. Bearing Journal
- Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction; giving you the confidence and performance you need across a wide variety of terrains.
- Yukon Dura Grip Differential
- Product Attributes:
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: This Product Can Expose You To Chemicals Including Arsenic; Which Is Known To The State Of California To Cause Cancer. For More Information; Go To Www.p65warnings.ca.gov.
-
Features:
- Fits 8.5 in./8.6 in. GM w/30 Spline Axles
- Fits 2.73 Gear Ratio Up
- Fully Rebuildable Design And Proudly Assembled In The USA
- Limited Slip Differential w/Composite Clutches
- All Units Are Backed By Extensive Product Testing And State-Of-The-Art Software Design
- Yukon Dura Grips Feature 4320 Chromoly Spider Gears For Ultimate Durability
- Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance you need across a wide variety of terrains. The Dura Grip is engineered for long life and is completely rebuildable. Dura Grips are constructed with a high strength nodular case, forged 4320 chromoly spider gears, and composite clutches. For unmatched positraction performance, the Dura Grip is the ultimate choice. When your vehicle demands performance, durability and strength, choose Yukon Dura Grip.
Additional Fitment Information:
| Vehicle | Block | CC | Position | Engine | CID |
|---|---|---|---|---|---|
| 1978 - GMC G25 | V | - | Rear | 8 Cyl 6.6L | 400 |
- 8.5in./8.6in. GM 2.73/Up Dura Grip Limited Slip; 30spl; Composite Clutches
- 8.6 in. 10 Bolt; 30 Spline; 2.73 And Up GM 8.5 in.; 30 Spline; 2.73 And Up~Yukon Dura Grip Positraction / Limited Slip; GM 8.5 in. Rear; 30 Spline; 2.73 And Up; 1.781 in. Bearing Journal
- Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction; giving you the confidence and performance you need across a wide variety of terrains.
- Yukon Dura Grip Differential
- Product Attributes:
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: This Product Can Expose You To Chemicals Including Arsenic; Which Is Known To The State Of California To Cause Cancer. For More Information; Go To Www.p65warnings.ca.gov.
-
Features:
- Fits 8.5 in./8.6 in. GM w/30 Spline Axles
- Fits 2.73 Gear Ratio Up
- Fully Rebuildable Design And Proudly Assembled In The USA
- Limited Slip Differential w/Composite Clutches
- All Units Are Backed By Extensive Product Testing And State-Of-The-Art Software Design
- Yukon Dura Grips Feature 4320 Chromoly Spider Gears For Ultimate Durability
- Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance you need across a wide variety of terrains. The Dura Grip is engineered for long life and is completely rebuildable. Dura Grips are constructed with a high strength nodular case, forged 4320 chromoly spider gears, and composite clutches. For unmatched positraction performance, the Dura Grip is the ultimate choice. When your vehicle demands performance, durability and strength, choose Yukon Dura Grip.
Additional Fitment Information:
| Vehicle | Block | CC | Position | Engine | CID |
|---|---|---|---|---|---|
| 1978 - GMC G25 | V | - | Front | 8 Cyl 5.7L | 350 |
- 8.5in./8.6in. GM 2.73/Up Dura Grip Limited Slip; 30spl; Composite Clutches
- 8.6 in. 10 Bolt; 30 Spline; 2.73 And Up GM 8.5 in.; 30 Spline; 2.73 And Up~Yukon Dura Grip Positraction / Limited Slip; GM 8.5 in. Rear; 30 Spline; 2.73 And Up; 1.781 in. Bearing Journal
- Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction; giving you the confidence and performance you need across a wide variety of terrains.
- Yukon Dura Grip Differential
- Product Attributes:
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: This Product Can Expose You To Chemicals Including Arsenic; Which Is Known To The State Of California To Cause Cancer. For More Information; Go To Www.p65warnings.ca.gov.
-
Features:
- Fits 8.5 in./8.6 in. GM w/30 Spline Axles
- Fits 2.73 Gear Ratio Up
- Fully Rebuildable Design And Proudly Assembled In The USA
- Limited Slip Differential w/Composite Clutches
- All Units Are Backed By Extensive Product Testing And State-Of-The-Art Software Design
- Yukon Dura Grips Feature 4320 Chromoly Spider Gears For Ultimate Durability
- Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance you need across a wide variety of terrains. The Dura Grip is engineered for long life and is completely rebuildable. Dura Grips are constructed with a high strength nodular case, forged 4320 chromoly spider gears, and composite clutches. For unmatched positraction performance, the Dura Grip is the ultimate choice. When your vehicle demands performance, durability and strength, choose Yukon Dura Grip.
Additional Fitment Information:
| Vehicle | Block | CC | Position | Engine | CID |
|---|---|---|---|---|---|
| 1978 - GMC G25 | V | - | Rear | 8 Cyl 5.7L | 350 |
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