TH350 Banner Rebuild Kit 1969-1986, new and ready to install. Fits the TH350. Ships fast from the USA.
Building a Turbo 350 to sit behind a warmed-over small block, pull a trailer, or survive a street car that sees the occasional hard launch? This 1969-1986 master kit is the performance version of a TH350 overhaul. In place of stock-grade linings it uses an upgraded Raybestos performance friction module for more clutch holding capacity, and it adds a complete steel module, a full overhaul gasket and seal set, a high energy band, new bushings and a filter. The listing names the TH350, TH350C, TH250 and TH250C, so it covers the GM cars, Camaros, Novas, Chevelles and light trucks that ran these units from 1969 through 1986.
Every TH350 gear depends on a clutch pack or band holding against engine torque. The forward clutch is on in all forward gears, the intermediate clutch and its roller clutch hold for 2nd, the direct clutch joins for 3rd and Reverse, and the intermediate overrun band holds the sun gear in manual 2nd. Stock linings were sized for stock engines. Add torque and the packs start to slip on each shift, the slip makes heat, and the heat glazes the frictions and cooks the fluid. Higher-capacity frictions hold more torque at the same apply pressure, which is the reason to pick this kit over a stock-grade one for a modified or towing vehicle. The fresh steels, seals, rings and bushings keep apply pressure where it belongs, so the new frictions are not undermined by leaks.
Start with the fluid level, a modulator check for ATF in the vacuum line, and the TV/kickdown adjustment, because a leaking modulator alone causes soft, late shifts. Match the missing or slipping gear to the clutch application chart in our TH350 problems and fixes guide. A vacuum and pressure gauge such as the OTC 5613 gauge kit lets you read engine vacuum at the modulator and line pressure at the case before you commit to pulling the unit. The TH350 wear points guide covers what to measure once it is on the bench.
The kit is listed for 1969-1986 GM TH350, TH350C, TH250 and TH250C transmissions. The TH250 shares the TH350 case but replaces the intermediate clutch with a band, and the TH350C and TH250C are the lockup-converter versions, so the parts you use from the kit depend on which one you have. Read the model code from the identification tag on your case and send it with your year and VIN; we will confirm the match before it ships. Browse the rest of our Turbo 350 parts on the TH350 parts page.
| Fits | TH350 1969-1986 |
| Part type | Banner Rebuild Kit |
| Condition | New |
| Brand | GM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The listing lists an upgraded Raybestos performance friction module, a complete steel module, a full overhaul gasket and seal set, a high energy band, new bushings and a filter.
The frictions are a higher-capacity performance grade meant to hold more torque without slipping, which suits modified engines, towing and higher-torque builds. A standard kit uses stock-grade linings.
The kit is listed for TH350, TH350C, TH250 and TH250C units from 1969-1986. Those versions differ internally, so send us the model code from your transmission tag with your year and VIN and we will confirm the match.
No. It renews the soft parts, band, bushings and filter. Pumps, drums, planetary sets and the intermediate outer race are reused unless they are worn, so inspect them during teardown.
Use a licensed DEXRON automatic transmission fluid, then check the level on the dipstick with the engine running and the fluid at operating temperature.
