700R4 Pump 1984, remanufactured and ready to install. Fits the 700R4. Ships fast from the USA.
A 700R4 that whines in every gear, takes a long time to engage Drive when it is hot, or slips under load even with fresh fluid often has a worn pump. This is a remanufactured front pump for the earlier, non-auxiliary 700R4, the design used up to about March 1987 in Chevrolet and GMC C/K pickups, Blazers, Suburbans, Camaros, Corvettes and Caprices. It comes machined and assembled with a 13-vane rotor and an updated TV boost valve, ready to bolt in.
Body casting numbers end in 303, 132, 704, 732 or 951; the stator support ends in 304 or 570. The three auxiliary-circuit holes are plugged, because this is not an auxiliary valve body pump.
The pump is a variable-displacement vane pump driven by the converter hub. A slide moves to change output, so it delivers full output at low engine speed and less once the engine is turning faster. Everything else in the 700R4 runs on that oil: clutch apply, the TV and governor signals that time the shifts, converter charge and lube. The stator support also routes the forward, 3-4 and reverse clutch feeds, so a cracked stator tube or warped cover face bleeds pressure from the clutches even when the gears are fine.
These units are pre-OBD-II, so there are no trouble codes; a line pressure gauge tells the story. Our 700R4 pump failure guide covers testing and the vane and spring differences.
Put a gauge on the line pressure tap and check it at idle and with the TV cable pulled. Low numbers with a correctly adjusted cable point to the pump or an internal leak. Rule out the TV cable first using our TV cable explainer, since a loose cable also drops pressure and burns clutches.
Built for non-auxiliary 700R4 units from 1984 to about March 1987. It is set up for the larger 1-inch, 30-spline input shaft. GM changed from a 27-spline to a 30-spline input in 1985, so if your unit is an original 1984 or earlier with a 27-spline shaft, count the splines before you order. It does not fit 1987-1993 auxiliary valve body units; those use a different pump. Compare your old pump's casting numbers to the list above, or send us your year and VIN. The full 700R4 parts collection has the later pump styles.
| Fits | 700R4 1984 |
| Part type | Pump |
| Condition | Remanufactured |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Only if it is an early-1987 non-auxiliary unit built before about March 1987. Later 1987-1993 auxiliary valve body units need a different pump.
It is set up for the 1-inch, 30-spline input shaft. GM moved from 27 to 30 splines in 1985, so count your input shaft splines before ordering if your transmission is original 1984 or earlier.
It has been updated to a 13-vane rotor with dual priming springs.
Align the two pump halves before torquing, inspect the converter hub, set endplay, and adjust the TV cable. A loose TV cable drops line pressure and can burn the 3-4 clutch on a new pump.
Dexron ATF. Current Dexron-VI is backward compatible with the older Dexron spec.
Yes. It comes with a new pump body bushing, front seal, retainer, two sealing rings, gasket, O-ring and screen.
