4L60E Input Drum 1982, remanufactured and ready to install. Fits the 4L60E. Ships fast from the USA.
If you are rebuilding a 1982 GM four-speed overdrive automatic, you are working on one of the very first 700-R4s. That was the debut year of the transmission that later became the 4L60 and then the electronic 4L60E, which is why this part is listed under the 4L60E family. This remanufactured drum is for owners of early Chevrolet and GMC pickups, Camaros, Firebirds and Corvettes who have lost Reverse, are slipping into 2nd, or found a scorched band surface on teardown. It ships with a 1-year warranty.
The drum in the photo has a smooth band surface, a bushed center hub and drive lugs on its open end, the layout of the 700-R4 reverse input housing that many rebuilders simply call the input drum. It has two jobs. Its outer surface is what the 2-4 band clamps: hold the drum still and the reaction sun gear it drives stops turning, which gives you 2nd and overdrive. Inside, it carries the reverse input clutch, which applies only in Reverse and drives that same sun gear. So a glazed or dished band surface hurts the forward upshifts, while a cracked housing, worn bushing or leaking piston seal costs you Reverse.
Low fluid, a worn 2-4 servo and low line pressure can all imitate a bad drum, so check those first. A no-Reverse complaint can also come from the low-reverse clutch or a stripped reaction shell; our low-reverse clutch failure guide explains how to tell them apart. With the transmission open, air-check the reverse input piston for a firm, leak-free apply, check the bushing for scoring, and lay a straightedge across the band surface. Sonnax highly recommends a new drum whenever a wider band goes in, because a used drum's surface is rarely true enough. If the band and servo are being upgraded at the same time, read our 2-4 band and servo upgrade guide.
This drum is listed for 1982, and with the earliest 700-R4s, details matter. Raybestos catalogs the reverse input frictions in its current 4L60/4L60E clutch pack as a second design for 1987 and later, which tells you the reverse input clutch itself changed partway through the 1980s. An early unit can therefore need frictions and steels that match its original housing rather than a later kit. Put your old drum beside this one and compare height, lug pattern, bushing size and plate spline before you build it, or send us the year, vehicle and transmission ID tag details so we can check. If your unit turns out to be later, see the 1987 input drum or the 1992 input drum, and browse every option in our 4L60E and 700-R4 parts collection.
| Fits | 4L60E 1982 |
| Part type | Input Drum |
| Condition | Remanufactured |
| Brand | GM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. The 4L60E arrived in 1993. In 1982 GM introduced the 700-R4, the hydraulic four-speed it evolved from, and the reverse input drum design carries through the family. We list it under the 4L60E because that is how most buyers search for this part.
It is listed for 1982 applications. Early 700-R4 parts saw running changes, so compare your old drum's height, lugs and bushing with the photo, or send us your vehicle and transmission tag details so we can confirm before it ships.
Match the reverse input frictions to the clutch design your housing uses. Raybestos lists its current reverse input plates as a second design for 1987 and later, so an early 1982 unit should be checked plate for plate against the originals.
Yes. A used band has worn to the shape of the old drum and will not seat properly on a fresh surface. A new band and a check of the 2-4 servo are part of doing this job once.
Use Dexron VI. It is GM's current service fluid for this transmission family and is backward compatible with the Dexron types originally specified for early 700-R4 units.
