Corrects the 700R4 valve body so the TV cable no longer decides whether the trans lives or dies, curing the burned 3-4 clutch, slipping band, and mushy shifts.
If you are rebuilding a 700R4 out of a Chevy C/K truck, Blazer, Suburban, Camaro or Corvette, or you just burned the 3-4 clutch in one for the second time, this is the kit that addresses why. The TransGo SK700 is a valve body repair kit for the GM 700R4 and the 4L60 it was renamed to, covering 1982 through 1993. It replaces the throttle valve system that decides how much line pressure the transmission makes, plus the springs, check balls and seals that set shift feel.
The 700R4 has no computer deciding pressure. A cable from the throttle pulls the throttle valve in the valve body, and that TV pressure tells the pressure regulator how hard to squeeze the clutches and band, while the governor and TV together time the shifts. If the cable is set short, a sticky TV valve hangs, or the cable gets pulled out of adjustment, line pressure stays low under load. The 2-4 band and the 3-4 clutch then slip through every shift and cook. TransGo's Bootstrap TV system is designed to address that root cause with a new TV system, and the rest of the kit is calibrated to work with it.
Most 700R4 burnouts start with the TV cable, so check that first. With the engine off, confirm the throttle reaches wide open and the cable pulls and returns smoothly; a gritty cable or binding TV linkage inside the case needs fixing no matter what kit you run. Road test for a light-throttle 1-2 shift around 15 mph and a 2-3 around 28 mph, and make sure the transmission makes a full-throttle 2-1 downshift right after the 1-2. Our 700R4 TV cable adjustment guide walks through it step by step. If the fluid is burnt and the unit slips in third and fourth, the clutches are already gone and this kit belongs inside a rebuild. For a side-by-side look at kit choices, read our TransGo and Superior shift kit comparison.
The SK700 fits GM 700R4 and 4L60 transmissions from 1982 to 1993. TransGo designed it around the 1982-1987 type-1 valve body, but it fits every year and valve body type. If you have a 1988 or later type-2 valve body, TransGo notes that its lower-cost SK 700-JR junior kit achieves the same results. This kit does not fit the electronically controlled 4L60E that replaced the 700R4 starting in 1993; if your transmission has a wiring connector on the side of the case and no TV cable, see our 4L60E versus 700R4 identification guide. Not sure which you have? Send us the year, vehicle and the tag on the case. More parts for this family are on our 700R4 parts page.
Install it with the valve body off and follow TransGo's instructions in order; the kit replaces springs in the 1-2, 2-3 and 3-4 TV valves, the converter TV valve and the line bias valve, and it includes orifice cup plugs, a drill bit, a roll pin extractor and new valve body gaskets. Lay out the removed parts in order on a clean bench so nothing goes back in the wrong bore, and watch the check ball locations. Most builders install it during an overhaul with a 700R4 master rebuild kit, and a Corvette servo piston assembly is a common addition for a truck that tows, because its larger apply area holds the 2-4 band harder. Refill with a quality Dexron-licensed ATF, then do the full TV cable adjustment and road test before the vehicle goes back into service.
| Fits | GM 700R4 / 4L60, 1982-1993 |
| Type | Shift kit / valve body correction kit |
| Includes | Valves, spacers, springs, bushings, check balls, seals, gaskets, instructions |
| Key feature | Bootstrap TV system corrects throttle-valve line pressure |
| Fixes | Burned 3-4 clutch, slipping 2-4 band, soft or wrong-timed shifts |
| Part number | TGOSK700 |
| Ships from | USA |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. The SK700 is for the cable-controlled 700R4 and 4L60 from 1982-1993. The electronically controlled 4L60E has a different valve body and uses its own shift kits, such as the TransGo SK 4L60E.
TransGo designed the SK700 for the 1982-1987 type-1 valve body, though it fits all years. If you have a 1988 or later type-2 valve body, TransGo says the less expensive SK 700-JR junior kit gives the same results.
No. The cable still has to be adjusted correctly. The kit makes the TV system more tolerant and stops a sticking TV valve, but you should still do the full adjustment and road test after installation.
The goal is firm, quick shifts that stop the band and 3-4 clutch from slipping, not a violent bang. Follow the instructions for your use, and the result is crisp shifts that are livable in a daily driver or tow rig.
It can go into a healthy unit during a valve body service, but if the fluid is burnt or the transmission already slips in third or fourth, the clutches and band are worn and the kit should go in with a rebuild.
