700R4 Input Drum 1992, remanufactured and ready to install. Fits the 700R4. Ships fast from the USA.
If your late 700R4 or 4L60 lost Reverse, came apart with a burnt 2-4 band, or the old reverse drum shows heat checking and a dished band surface, this is the assembly that goes back in. It is a remanufactured, loaded reverse input drum for 1992-and-later 700R4/4L60 units, and the same late-style drum used in the 4L60E, 4L65E and 4L70E. It arrives built up with its clutch pack and bushings, so you are not sourcing frictions, steels and a piston kit separately for this one drum.
The reverse input drum does two jobs. Inside it sits the reverse input clutch: when you select Reverse, this clutch locks the drum to the input, and the drum turns the sun shell and the reaction sun gear to drive the car backward. Outside, its smooth outer surface is what the 2-4 band wraps around. In 2nd and 4th the servo clamps the band and holds this drum still. That means one tired drum can hurt you in three gears: a slipping reverse clutch costs you Reverse, and a warped or glazed band surface lets the band slip in 2nd and 4th.
These are hydraulically controlled transmissions, so a slipping drum does not set a code. If Reverse is gone and the forward gears are also flaring, also look hard at the sun shell, which is a known 700R4 failure that can take out Reverse too. Our 700R4 common problems and fixes guide covers how those failures overlap.
Check fluid level and condition first, then put a gauge on line pressure. Low line pressure from a misadjusted TV cable or a leaking circuit is the most common reason bands and clutches burn, and a new drum will not survive it. Start with 700R4 TV cable adjustment and line pressure, and if pressure is low at idle, read 700R4 pump failure symptoms before tearing down. Once apart, set the old drum on a flat surface and look at the band contact area for bluing, scoring and a worn step where the band rode.
This drum is listed for 1992-and-later 700R4/4L60 transmissions, which covers 1992 Chevrolet and GMC C/K pickups, Suburban, Blazer and other rear-drive cars and trucks that still had the cable-controlled unit, plus 1993-up 4L60E, 4L65E and 4L70E applications. GM made several changes to the reverse drum and its bushings in the early 700R4 years, so do not assume it drops into a 1982-1987 unit without comparing it to your old drum. Match the drum's hub, bushing and feed holes against the part you removed, or send us your year and VIN before ordering. You can see every part for this family on the 700R4 transmission page.
| Fits | 700R4 1992 |
| Part type | Input Drum |
| Condition | Remanufactured |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is listed for 1992-and-later units. GM changed the reverse drum and its bushings during the early 700R4 years, so for a 1982-1987 transmission compare it to your old drum or send us your year and VIN before ordering.
Yes. The listing covers 1992-up 700R4 and 4L60 plus the 4L60E, 4L65E and 4L70E, which share this late-style reverse input drum.
The remanufactured drum comes loaded with 4 new frictions, 1 wave plate, 4 reconditioned steels, a reconditioned pressure plate, a piston and spring retainer kit, 2 snap rings and new bushings.
Yes. The band rides on the outside of this drum, and an old band is worn to the old drum's surface. Pairing a new drum with a used band usually gives poor contact and a band that slips in 2nd and 4th.
No Reverse or a slipping Reverse, a burnt 2-4 band that keeps coming back, flare on the 1-2 shift and in overdrive, and a blued or scored band surface on the old drum once it is out.
These transmissions take Dexron-type ATF. A current Dexron-VI fill is backward compatible with the earlier Dexron specs. Soak the frictions in ATF before assembly.
