TH350 Overhaul Kit 1969, new other (see details) and ready to install. Fits the TH350. Ships fast from the USA.
Restoring a Chevelle, Camaro, Nova or GM pickup and want a period kit for the Turbo 350? This is a new old stock TH350 standard overhaul kit, kit number 38000, for 1969-and-up units, still in its original sealed packaging. It contains the gaskets, seals, friction plates and steel plates needed to rebuild the clutch packs and reseal the case. It is a standard kit, not a master kit, so the filter, band, bushings and modulator are not part of it; that makes it a good fit for a builder who already has those parts or wants to choose them separately.
A TH350 gets its three forward speeds and Reverse from two planetary gearsets controlled by four multi-disc clutches, two roller clutches and an intermediate overrun band. The friction and steel plates in this kit are the wear surfaces inside the forward, direct, intermediate and low/reverse packs. The gaskets and rubber seals are what keep apply oil inside each piston and keep fluid inside the case. On a unit that has been parked for years the seals shrink and harden, so even a transmission with decent clutches can come back with slow engagement and leaks. Replacing the plates and every seal together is what a standard overhaul is for.
Low line pressure from a worn pump or a worn valve body bore can burn new clutches just as fast as the old ones went, so find the cause first. Sonnax ties a worn boost valve sleeve to low line pressure and soft 1-2 and 2-3 shifts, and a worn pump bushing lets the converter hub run off center and damage the pump gears. Our TH350 pump failure guide and valve body testing guide show how to tell those apart from plain worn clutches before you tear the unit down.
The packaging calls it a 1969-and-up TH350 standard kit. The TH350 stayed basically the same through the 1970s, but GM added the TH350C lockup version late in 1979, and some parts changed with it. Older kits like this one were packed for the original non-lockup design, so if you are rebuilding a lockup unit, send your year and VIN and we will confirm before it ships. Because the kit is new old stock, the box itself may show shelf wear; the contents are sealed. See every Turbo 350 part we carry on the TH350 parts page.
| Fits | TH350 1969 |
| Part type | Overhaul Kit |
| Condition | New Other (See Details) |
| 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.
Gaskets, seals, friction plates and steel plates, factory sealed with kit number 38000 on the packaging. A filter, band, bushings and modulator are not included.
Sealed rubber usually stays serviceable, but inspect each seal before it goes in. Replace any seal that is cracked, hard or has taken a permanent set.
The kit is packed for 1969-and-up TH350 units. The lockup TH350C arrived late in 1979 with some changed parts, so send us your year and VIN to confirm before ordering for a lockup unit.
At minimum a new filter and the intermediate overrun band, plus any worn bushings. Check the pump, the valve body bores and the modulator, since low line pressure from any of them will burn the new clutches.
A DEXRON-licensed automatic transmission fluid. Fill in stages, run the engine through the ranges and finish the level on the dipstick at operating temperature.
