T176 & T177 3-Speed Tremec Transmission Parts Jeep CJ7
Shafts, synchro components and cases for your four-speed (1980-1986).
What gives way on a T176 and T177 after four decades.
For the 1980 model year the T176 replaced the three-speed T150 in the CJ7 – a four-speed with an aluminium case, noticeably lighter and far more usable day to day thanks to synchronized forward gears. The T177 is the closely related variant with different ratios for the smaller engines. Both share the same weak spots. The blocking rings for third and fourth gear wear first and announce themselves as a crunch on an upshift at road speed. The shift forks wear at their guide faces, which makes the throw long and vague – a fault often blamed on the shift lever although it sits inside the case. On top of that the thrust and cluster washers develop play, and hardened cover gaskets start to weep oil. If the gearbox is open anyway, replacing these items in one pass is the sensible route.
What you will find in this category
- Shafts and gears: The main shaft and the 19-tooth input shaft are available separately, as are the 20-tooth version, second gear and the reverse sliding gear.
- Synchronizers and shift forks: The synchronizer assembly for 3rd and 4th gear and the four-piece blocking ring set cure the crunch; matching shift forks for 1st/2nd, 3rd/4th and reverse complete the job.
- Bearings, thrust washers and snap rings: From the input shaft bearing and the rear main shaft bearing through to cluster gear roller bearings, thrust washers and snap rings.
- Cases and gaskets: The complete transmission case covers serious damage, while the gasket and seal kit seals cover, bearing retainer and shaft exits on reassembly.
- Shift linkage in the cabin: The shift lever kit replaces worn-out shift actuation outright, the shift boot kit keeps draught and water out – plus shift knob, pattern insert and locking pins.
- Overhaul kits and clutch: The transmission overhaul and repair kit bundles the rebuild, the small parts master kit restores springs, pins and washers; flywheel and complete clutch set take care of the drive side.
Where the parts for your T176 and T177 come from.
The vast majority of this category comes from Crown Automotive – shafts, gears, shift forks, case components and complete overhaul kits from a single source, which keeps part numbers consistent across an entire rebuild. The flywheel with ring gear and the complete clutch set for the 2.5-litre AMC come from Platinum Driveline, a US supplier of driveline components.
Torque specs, installation sequence, shipping times.
Not sure whether your CJ7 has the T176 or the T177 – and which input shaft belongs to it, the 19-tooth or the 20-tooth? We help with identification, installation sequence, cover bolt torques and the question of which small parts are already contained in the repair kit. Just send us your model year, engine and VIN. Your order leaves the warehouse in Germany as quickly as possible.