TH350 valve body for 1969-1986, OEM and ready to install. Ships fast from the USA.
If you want firmer, quicker shifts for a street/strip TH350 but do not want to give up driving it like an automatic in daily traffic, a StreetFighter-style valve body is built for exactly that middle ground. Drop it into Drive and it shifts automatically; move the shifter yourself and the gear change happens immediately, without the stock unit's governor delay. This is a manual/automatic valve body for the 1969-1986 TH350.
A stock TH350 valve body uses vacuum signal and governor pressure to decide shift timing on its own, which is comfortable to drive but slow to respond and the first thing to go soft when the governor or boost valve bores wear. A full manual valve body removes automatic shifting entirely and puts every gear change on the driver. This StreetFighter-style design sits between the two: left in Drive, it still shifts on its own; moved to a manual gear, the change happens right away with no governor override waiting to catch up, and the shift itself is firmer because it is built around raised line pressure for stronger clutch and band apply.
If your stock valve body is simply worn - soft shifts, delayed engagement, no real performance complaint - that is a straight repair, and our TH350 valve body problems and testing guide walks through diagnosing it before you spend on an upgrade. If you specifically want firmer shifts and the option to manually hold or force a gear while still being able to leave it in Drive the rest of the time, that is what this valve body is built for; our TH350 harsh shift causes guide explains the difference between a harsh shift that means something is wrong and a firm shift that is working as designed.
Built for the TH350 as installed across 1969-1986 GM cars and light trucks. Confirm your case casting and valve body bolt pattern against the photos before ordering, since the TH350 ran multiple revisions over that span, or send your year and application and we will confirm fit. The full TH350 parts collection covers everything else we stock for this transmission.
This is a direct-fit valve body swap with no case modification required. Drop the pan, swap the valve body, and refill with fresh Dexron ATF to the TH350's normal capacity. Because this unit raises line pressure for firmer apply, check your transmission cooler and fluid condition at the same time - a TH350 transmission cooler is worth adding if you are also raising stall speed or running harder than stock. If you plan to shift manually at the strip, a ratchet shifter gives you positive gear selection to match the valve body's immediate response, and the governor shift point kit lets you tune the automatic shift points left in Drive mode.
| Transmission | TH350 |
| Year Range | 1969-1986 |
| Condition | Remanufactured / updated |
| Shipping | Ships from the USA |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Both. Left in Drive it shifts on its own like a stock automatic. Move the shifter to a manual gear and the change happens immediately without the governor delay of a stock valve body.
A full manual valve body removes automatic shifting entirely - every gear change is on the driver, with no Drive position that shifts itself. This valve body keeps automatic operation in Drive and adds immediate, firm manual override when you want it.
It will replace the worn hydraulics, but if your only complaint is soft or delayed stock shifts with no performance need, that is usually a straight repair rather than an upgrade. Check our TH350 valve body testing guide first to confirm what is actually worn.
No - it is a direct-fit valve body swap. If you want to shift manually at the strip, pairing it with a ratchet shifter gives you positive gear selection, but it is not required for the valve body to work.
It is built for the TH350 across that range, but the transmission ran multiple case and valve body revisions, so confirm your bolt pattern and casting marks against the photos, or send your year and application to confirm fit before ordering.
Check your cooler and fluid condition. Raised line pressure means stronger clutch and band apply, so if you are also running harder than stock, an upgraded transmission cooler is worth adding at the same time.
