700R4 Input Drum 1987, remanufactured and ready to install. Fits the 700R4. Ships fast from the USA.
Rebuilding a 1987 700R4, or any later cable-shift unit, and found the reverse drum cracked, heat-checked or loose on its bushings? This remanufactured reverse input drum is a clean, inspected GM housing with new bushings pressed in, sold bare and ready for your clutch pack. It is the 1987-and-up style, reference 24245624, and it also fits the 4L60E, 4L65E and 4L70E that grew out of the 700R4. It is a lower-cost alternative to a brand new drum when the GM casting is what you want.
1987 was a big change year for the 700R4. GM added the auxiliary valve body that year and also revised the reverse input drum. That means a 1987 transmission can carry either the early drum or the late one depending on when it was built. This drum is the late design. If your 1987 unit came out of an early-production truck or Corvette, look closely at the old drum before you order; the two styles differ in their feed holes and piston arrangement and are not meant to be mixed.
The drum has an inside job and an outside job. The 2-4 band clamps its outer surface to hold it still for 2nd and 4th gear. The reverse input clutch inside it ties the drum to the input during Reverse. When the band surface glazes or goes out of round, 2nd and overdrive slip; when the clutch tangs crack or the bushings wear, Reverse fades and the sealing rings leak apply oil.
A drum failure on a 700R4 is often the result of something else going wrong first. Check line pressure, the TV cable and the servo before blaming the drum, because low apply pressure burns the band no matter how good the drum is. The TV cable and line pressure guide covers the adjustment, and 700R4 valve body problems and testing covers the valve body leaks that starve the band circuit.
Listed for late-1987 and newer 700R4/4L60 transmissions and the 4L60E family: 1987-1992 Chevrolet and GMC C/K pickups, Blazer, Suburban, Camaro, Caprice and Corvette with the cable-controlled unit, plus later electronic 4L60E builds. It does not belong in a 1982-1986 unit. Line up the feed hole, piston bore and bushings against your original drum, or give us your year and VIN to check. Everything else we stock for this transmission is on the 700R4 collection page.
| Fits | 700R4 1987 |
| Part type | Input Drum |
| Condition | Remanufactured |
| Brand | GM |
| Reference | 24245624 |
| 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 a remanufactured GM drum: cleaned, inspected and fitted with new bushings. It comes bare, without piston or clutch plates.
GM switched drum designs during 1987. Compare the feed hole between the sealing ring lands and the piston on your old drum with this one, or send your VIN and we will check.
No. It is the late-1987-and-up design and is not meant to replace the early drum.
Yes. It is listed for 1987-up 700R4, 4L60, 4L60E, 4L65E and 4L70E transmissions.
Yes. Fit a new 2-4 band whenever the drum is replaced so the band seats on the fresh surface.
