Full overhaul set for the GM 700R4 and 4L60: high energy frictions, front band, pump bushing, filter, gaskets and seals. Steels not included.
If your 1982-1993 Chevy C/K pickup, Blazer, Astro, S10, Camaro, Firebird or Corvette has a 700R4 that slips into third, flares on the 2-4 shift or leaks from every seal, this Remco overhaul kit (part number RK700R4-FBA) gives you the soft parts and friction surfaces to put it back together right. It also covers units built after GM renamed the 700R4 the 4L60 in 1990, and the listing includes the first-year 1993 4L60E.
The 700R4 is a hydraulically controlled four-speed with overdrive. There is no computer setting shift pressure: the throttle valve (TV) cable tells the valve body how hard you are pushing, and line pressure follows. Every clutch pack and the single 2-4 band only hold as well as their friction material and seals allow. This kit replaces those wear items in one box: high energy frictions for the forward, overrun, 3-4 and direct packs, a new 2-4 band (listed as the front band), the front pump bushing, a filter, and the full gasket and seal set with pan gasket, pump gasket, lip seals and sealing rings. Fresh lip seals and rings restore apply pressure to each piston, which is what actually keeps a clutch from slipping.
The 700R4 does not store transmission trouble codes, so diagnosis is hands-on. A 3-4 clutch that burned up is very often a TV cable that was never adjusted correctly, which drops line pressure exactly where the clutch needs it.
Check fluid condition and run a line pressure test at idle and with the TV cable pulled to wide open. Low pressure everywhere points at the pump or valve body; low pressure only under throttle points at TV adjustment. Our 700R4 common problems and fixes guide walks through the failure patterns, and the TV cable adjustment guide explains why skipping that step burns a new 3-4 pack. If you are not sure whether you have a 700R4 or a 4L60E, use the 4L60E vs 700R4 interchange guide.
The kit is listed for GM 700R4 and 4L60 units from 1982 through 1993, including the early hydraulic units and the first-year 4L60E, in rear-wheel-drive GM trucks and cars such as the C/K 1500, Blazer, Astro, S10, Camaro, Firebird and Corvette. GM revised drums, pistons and the input housing several times in that span, so compare the kit against your parts on the bench and send us your year and VIN if you want fitment checked. Everything else we carry for this unit is in the 700R4 parts collection.
Steel plates and the remaining case bushings are not included. If your steels are flat, clean and not blued, reuse them. Lay each one on a flat surface and check for coning or heat discoloration; replace any pack that fails. A unit that lost third gear or reverse completely usually damaged steels and sometimes drums, so budget for more than this kit.
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Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. It includes frictions, the 2-4 band, front pump bushing, filter and the gasket and seal set. Steels and the remaining case bushings are sold separately. Reuse steels only if they are flat and free of heat discoloration.
Yes, the 4L60 is the same hydraulic transmission as the 700R4, renamed by GM in 1990. The kit is listed for 1982-1993 units. Send us your year and VIN if you want it checked first.
Use Dexron VI ATF. GM rates it as the replacement for the earlier Dexron fluids the 700R4 originally used. Soak new frictions in it before assembly.
On a 700R4 the most common cause is a misadjusted or broken TV cable that lets line pressure fall under throttle. Low pump output and valve body wear are the next suspects. Fix the cause or the new clutches will fail the same way.
Plan on steels for any pack that is coned or blued, case bushings, and a bushing driver to install them. Inspect the valve body and the converter as well, since a contaminated converter will put debris straight back into a fresh unit.
