What causes a transmission problem on a GM Turbo 350?
What causes a transmission problem on a GM Turbo 350?
If you look at the list below, it quickly becomes evident that many problems can share a common cause, such as the transmission being low on fluid, or the gear shift selector not moving the manual valve correctly. The TH350 has one advantage over a TH400 in that the filter is attached to…
When to remove the valve body on a GM Turbo 350?
The most difficult problems when it comes to transmission function involve the valve body (control valve assembly). In almost all cases the valve body must be removed to correct any issues, and this should be done after all other possibilities have been eliminated.
What to do when your transmission doesn’t work?
Withdraw the transmission’s dipstick underneath the hood with the engine running, then check the fluid level on the dipstick. If the transmission has enough fluid, check whether the manual linkage on the driver’s side of the transmission requires adjustment.
Why is the gasket leaking on my 350 Turbo?
If the problem persists, the control valve body gasket may be either leaking or damaged. If the valve body has recently been removed from the transmission, make sure that the low-reverse check ball was installed. Due to its small size, it is easily forgotten.
If you look at the list below, it quickly becomes evident that many problems can share a common cause, such as the transmission being low on fluid, or the gear shift selector not moving the manual valve correctly. The TH350 has one advantage over a TH400 in that the filter is attached to…
Can a Turbo 350 Trans upshift from 1st gear?
It does reverse and 1st fine. When you drive it, it goes through 1st, then it doesn’t shift. If you let off the gas at that point, it the rpm’s will drop but the car is just coasting. You can give it gas and it will rev back to where it starts pulling in 1st again, but never upshifts.
The most difficult problems when it comes to transmission function involve the valve body (control valve assembly). In almost all cases the valve body must be removed to correct any issues, and this should be done after all other possibilities have been eliminated.
Where can I get a GM Turbo 350?
This Tech Tip is From the Full Book, GM TURBO 350 TRANSMISSIONS: HOW TO REBUILD AND MODIFY. For a comprehensive guide on this entire subject you can visit this link: SHARE THIS ARTICLE: Please feel free to share this article on Facebook, in Forums, or with any Clubs you participate in.
Why is the vacuum line on my TH350 not working?
On the other hand, it is possible that a TH350 can suffer from an early shift. The culprit is usually because the original vacuum line running from the intake manifold to the vacuum modulator may have either rusted apart or corroded, and someone replaced it with a generic rubber piece.
Why does my TH350 transmission not shift right?
Second, check your vacuum lines. TH350s don’t like to shift right if the modulator is unhooked or bad. It’s also possible that you need a new governor if the above suggestions fail. The Dude Management
Where can I get a new transmission vacuum line?
Just choose your application for a custom fit! We carry transmission vacuum lines for GM Powerglide, TH350, TH400; Ford C-4, C-6, Fordomatic; Chrysler Torqueflite 727, and many others. Start your automatic transmission vacuum line replacement now at Summit Racing
On the other hand, it is possible that a TH350 can suffer from an early shift. The culprit is usually because the original vacuum line running from the intake manifold to the vacuum modulator may have either rusted apart or corroded, and someone replaced it with a generic rubber piece.
