Shop By Product Matching "TT"
Choose a Model for your 1978 GMC
Image
Product
Price
- Weight Capacity 8000 lbs.; Severe Service-Slide-In Camper Or Salt Spreader
- Suspension Enhancement System; Weight Capacity 8000 lbs.; Rear; Severe Service-Slide-In Camper Or Salt Spreader;
- Suspension Enhancement System
- Product Attributes:
- Usage:
- Heavy Duty Truck
- Medium Duty Truck
- Axle Style: N/a
- Usage:
-
Features:
- Eliminate Suspension Sag And Cushion Road Shock
- Reduce Sway And Improve Roll Stability
- Easy To Install With Basic Hand Tools
- Improves Roll Control
- Trouble And Maintenance Free
- Satisfaction Guarantee And Lifetime Warranty
- Used To Carry Heavy Cargo Or Towing Trailers
- Leaders In Rubber Spring Technology Since 1965
- Timbren Suspension Kits (SES Kits) are designed to enhance the suspension of your vehicle. Easiest to use: Rubber cushions absorb road shocks and automatically adjust to uneven loads or road conditions. Easiest to maintain: There are no airlines or fittings to allow leaks. Simply bolt the kit on and you are set for a lifetime of trouble free suspension.Easiest to install: There are no holes to drill, no airlines to route and SES Kits can be installed in a matter of minutes using basic hand tools. The softer ride quality of todays trucks and the mediocre suspensions found on most trailers can cause excessive trailer sway, instability and suspension settling.Timbrens high performance suspension packages will ensure added safety and peace of mind.
Additional Fitment Information:
| Vehicle | Position |
|---|---|
| 1978 - GMC K25 | Rear |
- Weight Capacity 8000 lbs.; Severe Service-Slide-In Camper Or Salt Spreader
- Suspension Enhancement System; Weight Capacity 8000 lbs.; Rear; Severe Service-Slide-In Camper Or Salt Spreader;
- Suspension Enhancement System
- Product Attributes:
- Usage:
- Heavy Duty Truck
- Medium Duty Truck
- Axle Style: N/a
- Usage:
-
Features:
- Eliminate Suspension Sag And Cushion Road Shock
- Reduce Sway And Improve Roll Stability
- Easy To Install With Basic Hand Tools
- Improves Roll Control
- Trouble And Maintenance Free
- Satisfaction Guarantee And Lifetime Warranty
- Used To Carry Heavy Cargo Or Towing Trailers
- Leaders In Rubber Spring Technology Since 1965
- Timbren Suspension Kits (SES Kits) are designed to enhance the suspension of your vehicle. Easiest to use: Rubber cushions absorb road shocks and automatically adjust to uneven loads or road conditions. Easiest to maintain: There are no airlines or fittings to allow leaks. Simply bolt the kit on and you are set for a lifetime of trouble free suspension.Easiest to install: There are no holes to drill, no airlines to route and SES Kits can be installed in a matter of minutes using basic hand tools. The softer ride quality of todays trucks and the mediocre suspensions found on most trailers can cause excessive trailer sway, instability and suspension settling.Timbrens high performance suspension packages will ensure added safety and peace of mind.
Additional Fitment Information:
| Vehicle | Position |
|---|---|
| 1978 - GMC K35 | Rear |
- Weight Capacity 8000 lbs.; Severe Service-Slide-In Camper Or Salt Spreader
- Suspension Enhancement System; Weight Capacity 8000 lbs.; Rear; Severe Service-Slide-In Camper Or Salt Spreader;
- Suspension Enhancement System
- Product Attributes:
- Usage:
- Heavy Duty Truck
- Medium Duty Truck
- Axle Style: N/a
- Usage:
-
Features:
- Eliminate Suspension Sag And Cushion Road Shock
- Reduce Sway And Improve Roll Stability
- Easy To Install With Basic Hand Tools
- Improves Roll Control
- Trouble And Maintenance Free
- Satisfaction Guarantee And Lifetime Warranty
- Used To Carry Heavy Cargo Or Towing Trailers
- Leaders In Rubber Spring Technology Since 1965
- Timbren Suspension Kits (SES Kits) are designed to enhance the suspension of your vehicle. Easiest to use: Rubber cushions absorb road shocks and automatically adjust to uneven loads or road conditions. Easiest to maintain: There are no airlines or fittings to allow leaks. Simply bolt the kit on and you are set for a lifetime of trouble free suspension.Easiest to install: There are no holes to drill, no airlines to route and SES Kits can be installed in a matter of minutes using basic hand tools. The softer ride quality of todays trucks and the mediocre suspensions found on most trailers can cause excessive trailer sway, instability and suspension settling.Timbrens high performance suspension packages will ensure added safety and peace of mind.
Additional Fitment Information:
| Vehicle | Position | Bed Length |
|---|---|---|
| 1978 - GMC C35 | Rear | 96.0 |
- Weight Capacity 8000 lbs.; Severe Service-Slide-In Camper Or Salt Spreader
- Suspension Enhancement System; Weight Capacity 8000 lbs.; Rear; Severe Service-Slide-In Camper Or Salt Spreader;
- Suspension Enhancement System
- Product Attributes:
- Usage:
- Heavy Duty Truck
- Medium Duty Truck
- Axle Style: N/a
- Usage:
-
Features:
- Eliminate Suspension Sag And Cushion Road Shock
- Reduce Sway And Improve Roll Stability
- Easy To Install With Basic Hand Tools
- Improves Roll Control
- Trouble And Maintenance Free
- Satisfaction Guarantee And Lifetime Warranty
- Used To Carry Heavy Cargo Or Towing Trailers
- Leaders In Rubber Spring Technology Since 1965
- Timbren Suspension Kits (SES Kits) are designed to enhance the suspension of your vehicle. Easiest to use: Rubber cushions absorb road shocks and automatically adjust to uneven loads or road conditions. Easiest to maintain: There are no airlines or fittings to allow leaks. Simply bolt the kit on and you are set for a lifetime of trouble free suspension.Easiest to install: There are no holes to drill, no airlines to route and SES Kits can be installed in a matter of minutes using basic hand tools. The softer ride quality of todays trucks and the mediocre suspensions found on most trailers can cause excessive trailer sway, instability and suspension settling.Timbrens high performance suspension packages will ensure added safety and peace of mind.
Additional Fitment Information:
| Vehicle | Position |
|---|---|
| 1978 - GMC C25 | Rear |
- 6 in. Lift; Includes Leaf Springs; Steering Arm; Brake Line Relocation Brkt; U-Bolts; Front and Rear Premium N3 Shocks
- Suspension Lift Kit w/Shocks; 6 in. Lift; Includes Leaf Springs; Steering Arm; Brake Line Relocation Brkt; U-Bolts; Front and Rear Premium N3 Shocks;
- Suspension Lift Kit w/Shocks
- Product Attributes:
- Lift/Drop Height: 6 In.
- WARNING CA Proposition 65: No
-
Features:
- Increased Ground Clearance
- Includes Application Valved N3 Series Shock Absorbers
- Transform Your Trucks Stance and Capability: Upgrade your GM truck from front to back with Rough Countrys 6 in. Suspension Lift Kit. This premium lift delivers a leveled, aggressive look while enhancing ride height and off-road readiness all with an easy bolt-on installation.Engineered for Superior Ride Quality: This kit includes application-specific front lifted leaf springs, delivering increased ground clearance without sacrificing ride comfort or control. Rear lift blocks, add-a-leafs, and brake line brackets maintain proper geometry, ensuring a smooth, factory-like ride after installation. For a complete suspension upgrade, the kit is also available with replacement rear lifted leaf springs, offering consistent rear lift and eliminating the need for lift blocks.Enhanced Performance with N3 Series Shocks: Rough Countrys N3 series shocks come standard valved for your exact application and designed to provide a perfect balance of on-road smoothness and off-road capability. Featuring a 10-stage variable valving system, high-pressure nitrogen charge, and durable 54mm shock body with 18mm piston rod, these shocks are built for performance and longevity.Room for Bigger Tires: Make room for aggressive wheel and tire combos. This 6 in. lift offers enough clearance to run up to a 37 in. tall tire with proper backspacing, giving your truck the rugged stance it deserves.Improved Steering and Handling: To maintain proper drivability, a raised steering arm is included correcting steering geometry for tight, responsive handling after the lift.Limited Lifetime Warranty: Rough Country backs this kit with a Limited Lifetime Warranty, giving you long-term confidence on and off the road.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | Sub Model | CID |
|---|---|---|---|---|---|
| 1978 - GMC Jimmy | L | - | 6 Cyl 4.1L | Street Coupe | 250 |
- 6 in. Lift; Includes Leaf Springs; Steering Arm; Brake Line Relocation Brkt; U-Bolts; Front and Rear Premium N3 Shocks Superseded From PN[205.20]
- Suspension Lift Kit w/Shocks; 6 in. Lift; Includes Leaf Springs; Steering Arm; Brake Line Relocation Brkt; U-Bolts; Front and Rear Premium N3 Shocks;
- Suspension Lift Kit w/Shocks
- Product Attributes:
- Lift/Drop Height: 6 In.
- WARNING CA Proposition 65: No
-
Features:
- Increased Ground Clearance
- Includes Application Valved N3 Series Shock Absorbers
- Transform Your Trucks Stance and Capability: Upgrade your GM truck from front to back with Rough Countrys 6 in. Suspension Lift Kit. This premium lift delivers a leveled, aggressive look while enhancing ride height and off-road readiness all with an easy bolt-on installation.Engineered for Superior Ride Quality: This kit includes application-specific front lifted leaf springs, delivering increased ground clearance without sacrificing ride comfort or control. Rear lift blocks, add-a-leafs, and brake line brackets maintain proper geometry, ensuring a smooth, factory-like ride after installation. For a complete suspension upgrade, the kit is also available with replacement rear lifted leaf springs, offering consistent rear lift and eliminating the need for lift blocks.Enhanced Performance with N3 Series Shocks: Rough Countrys N3 series shocks come standard valved for your exact application and designed to provide a perfect balance of on-road smoothness and off-road capability. Featuring a 10-stage variable valving system, high-pressure nitrogen charge, and durable 54mm shock body with 18mm piston rod, these shocks are built for performance and longevity.Room for Bigger Tires: Make room for aggressive wheel and tire combos. This 6 in. lift offers enough clearance to run up to a 37 in. tall tire with proper backspacing, giving your truck the rugged stance it deserves.Improved Steering and Handling: To maintain proper drivability, a raised steering arm is included correcting steering geometry for tight, responsive handling after the lift.Limited Lifetime Warranty: Rough Country backs this kit with a Limited Lifetime Warranty, giving you long-term confidence on and off the road.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | Sub Model | Drive Type | CID |
|---|---|---|---|---|---|---|
| 1978 - GMC Jimmy | V | - | 8 Cyl 5.0L | Sierra Grande | 4WD | 305 |
- For Positive Seal Use Teflon Tape Or Pro Pipe Sealant
- Brass Freeze Plug Kit; For Positive Seal Use Teflon Tape Or Pro Pipe Sealant;
- Brass Freeze Plug Kit
- Product Attributes:
- WARNING CA Proposition 65: Yes
- Item Weight: 0.880 Lbs.
-
Features:
- Eliminates Rusted Plugs
- Designed For Marine Use
- Ideal For Every Day Use
- Ideal For Long-Term Storage
- Includes All Plugs
- Eliminate any chance of rusted out freeze plugs with a Mr. Gasket Brass Freeze Plug Kit. Though designed for marine applications, kits are for long-term stored vehicles as well as every day street use. Kit includes all plugs needed for a complete engine. Fits Chevrolet small block .
Additional Fitment Information:
| Vehicle | Block | CC | Engine | CID |
|---|---|---|---|---|
| 1978 - GMC C15 | V | - | 8 Cyl 6.6L | 400 |
- For Positive Seal Use Teflon Tape Or Pro Pipe Sealant
- Brass Freeze Plug Kit; For Positive Seal Use Teflon Tape Or Pro Pipe Sealant;
- Brass Freeze Plug Kit
- Product Attributes:
- WARNING CA Proposition 65: Yes
- Item Weight: 0.880 Lbs.
-
Features:
- Eliminates Rusted Plugs
- Designed For Marine Use
- Ideal For Every Day Use
- Ideal For Long-Term Storage
- Includes All Plugs
- Eliminate any chance of rusted out freeze plugs with a Mr. Gasket Brass Freeze Plug Kit. Though designed for marine applications, kits are for long-term stored vehicles as well as every day street use. Kit includes all plugs needed for a complete engine. Fits Chevrolet small block .
Additional Fitment Information:
| Vehicle | Block | CC | Engine | CID |
|---|---|---|---|---|
| 1978 - GMC C15 | V | - | 8 Cyl 5.0L | 305 |
- Hex Head; Short Water Pump; 4 piece 3/8 in. w/Washers
- Water Pump Bolts; Hex Head; Short Water Pump; 4 piece 3/8 in. w/Washers;
- Water Pump Bolts
- Product Attributes:
- WARNING CA Proposition 65: Yes
- Engine Make/Size: Chevy Small Block (262-400)
-
Features:
- Chrome Plated
- 12-Point Head
- This Mr. Gasket Water Pump Bolt Set includes chrome plated grade 5 hex head fasteners and AN style washers to install the water pump on your small block Chevrolet with the short style water pump. AN washers have no exposed shoulder which offers a professional appearance. Includes one 3/8 inch-16 x 2-1/2 bolt, three 3/8 inch-16 x 1-3/4 inch bolts, and four 3/8 inch AN washers.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | CID |
|---|---|---|---|---|
| 1978 - GMC C25 | V | - | 8 Cyl 6.6L | 400 |
- Hex Head; Short Water Pump; 4 piece 3/8 in. w/Washers
- Water Pump Bolts; Hex Head; Short Water Pump; 4 piece 3/8 in. w/Washers;
- Water Pump Bolts
- Product Attributes:
- WARNING CA Proposition 65: Yes
- Engine Make/Size: Chevy Small Block (262-400)
-
Features:
- Chrome Plated
- 12-Point Head
- This Mr. Gasket Water Pump Bolt Set includes chrome plated grade 5 hex head fasteners and AN style washers to install the water pump on your small block Chevrolet with the short style water pump. AN washers have no exposed shoulder which offers a professional appearance. Includes one 3/8 inch-16 x 2-1/2 bolt, three 3/8 inch-16 x 1-3/4 inch bolts, and four 3/8 inch AN washers.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | CID |
|---|---|---|---|---|
| 1978 - GMC C25 | V | - | 8 Cyl 5.0L | 305 |
Showing 1 - 10 of 28 products
Loading...