TransGo 700-P separator plate that fits both Type 1 and Type 2 valve bodies on 1982-1993 700R4 and early non-electronic 4L60 transmissions.
A 1982-1993 GM 700R4 or early non-electronic 4L60 that has no line pressure rise under load, never kicks down at wide open throttle, or is burning up 3-4 clutches after a rebuild often has the wrong separator plate hiding under the valve body. This TransGo 700-P is a universal plate that covers both Type 1 and Type 2 700R4 valve bodies, so you do not have to identify your exact casting before ordering.
The separator plate is the thin steel plate sandwiched between the valve body and the transmission case. Every feed hole and orifice stamped into it meters the fluid that runs the line-bias and TV cable circuit, which is what gives the 700R4 its pressure rise under throttle and its forced downshift at wide open throttle. The 700R4 went through multiple valve body revisions during its production run, and a plate that does not match the casting blocks that line-bias circuit entirely.
Pull the pan and valve body and compare the old plate's hole pattern and checkball locations against a TransGo fitment chart, or check whether the current plate is blued, warped or has wallowed-out checkball seats. Our 700R4 valve body testing guide walks through identifying worn or mismatched valve body components on the bench, and if the line pressure or TV cable symptoms above sound familiar, our 700R4 TV cable and line pressure guide covers adjusting the cable correctly once the plate is right.
This plate fits the 1982-1993 GM 700R4 and the early hydraulic 4L60, covering both the Type 1 and Type 2 valve body and including two aluminum slugs in the box. Interchange numbers are A74747, A74747U, 51995U, TG-700-P and TRG-700-P. It does not fit the electronic 4L60E - if you have a 4L60E, see our 4L60E parts instead. The 700R4 changed valve bodies several times across this run, so confirm Type 1 vs. Type 2 before installing, or send us your casting number and we will confirm fitment.
Do this on the bench with the valve body off the car. Pull the pan, filter, TV cable and valve body, lift the old plate and gaskets off and note exactly where every checkball sits before you disturb them. Fit new valve body and case gaskets on both sides of the 700-P plate, set the aluminum slugs per the TransGo instructions for your valve body type, and torque the valve body bolts in sequence rather than in a circle. If you are already in the valve body for a shift-feel upgrade, pair this plate with our TransGo SK 700 shift kit and change the fluid and filter with a pan and filter kit at the same time so debris from the old unit is not circulating through the new plate. Set the TV cable last, before the road test.
| TransGo part number | 700-P |
| Interchange | A74747, A74747U, 51995U, TG-700-P, TRG-700-P |
| Fits | 1982-1993 700R4 and early non-electronic 4L60, Type 1 and Type 2 valve bodies |
| Does not fit | 4L60E |
| Material | Tempered steel |
| Includes | 1 separator plate, 2 aluminum slugs |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The 1982-1993 GM 700R4 and the early non-electronic 4L60, covering both Type 1 and Type 2 valve bodies. It does not fit the electronic 4L60E.
No line pressure rise under throttle, no forced downshift at wide open throttle, and 3-4 clutch packs burning up from sustained low line pressure under load.
Compare your old plate's hole pattern and checkball locations against a TransGo fitment chart, or pull the valve body and check the casting markings. This plate works on either type, so you do not need to identify it before ordering.
It ships with the separator plate and two aluminum slugs. Use new valve body and case gaskets on each side, which are not included.
If you are already into the valve body, this is the right time to add a shift kit such as the TransGo SK 700 and to change the fluid and filter so you are not sending old debris through the new plate.
A74747, A74747U, 51995U, TG-700-P and TRG-700-P.
