3J Driveline - Performance Gear kits and Gearboxes
Ford Rocket Four-Speed
The Ford 'Rocket' Four-Speed gearbox is still a very popular choice on road and on track.
3J Driveline's Rocket straight-cut close-ratio gear kits are manufactured in the UK, using UK sourced materials, designed with competition in mind.
The mainshaft gears are designed with unique oil pockets on the face, the bore contains a scroll to increase oil flow, and a performance coating that aids oil absorption.
"The unique 3J 'Milled Oil Pocket' design of the gear faces and oil scrolls running throughout the bore increases oil flow and aids the lubrication of gears, producing the most reliable Rocket gear-kits and gearboxes available today"
3J Driveline Straight Cut Gear Ratios
|
1st |
2nd |
3rd |
4th |
|---|---|---|---|
|
2.48 |
1.69 |
1.28 |
1.0 |
|
2.38 |
1.69 |
1.28 |
1.0 |
|
2.29 |
1.62 |
1.22 |
1.0 |
|
3.03 |
2.07 |
1.98 |
1.0 |
|
2.92 |
2.07 |
1.98 |
1.0 |
|
2.48 |
1.69 |
1.61 |
1.0 |
3J Driveline Rocket Dog-Engagement Gearbox
Our 'RACE' specification, complete alloy casing gearbox. As run in the SHP Pickup truck championship. This unit showcases all of our experience in this classic replacement 'dog box' transmission.
Built in house by our experienced transmission technicians, all gearboxes are thoroughly tested on our in-house test rig prior to dispatch.
The design of this unit features a new, heavy duty, mainshaft and layshaft spindle and reverse gear system. This helps rank our gearbox above any of its rivals in the market place. Capable of handling up to 280bhp.
Features include:
Each mainshaft gear has a 6-dog design with tapered teeth for unrivalled quick shift
Heavy duty mainshaft layshaft spindle and reverse gear system
All mainshaft gears run on caged needle roller bearings
Our unique 3J alloy main casing makes this the strongest casing and box available
Steel selector forks
Unique spool system for even slicker shift
Quick-shift gear lever
3J Driveline Rocket Dog Gear Ratios
|
1st |
2nd |
3rd |
4th |
|---|---|---|---|
|
2.04 |
1.53 |
1.21 |
1.0 |
|
1.83 |
1.38 |
1.14 |
1.0 |
