dieseltech

Greetings, Does anyone know how to turn the 4+3 trans into being manual overdrive only? At one time I had info that told how to do so but now I cant`t find it. Thanks in advance for your help.

FOURSPEEDVETTE

Not quite sure what you mean by "manual overdrive only". You turn it on and off manually by design with the electrical switch except for when you push the accelerator to the floor while in overdrive, it will kick out of overdrive and back into overdrive when you let up on the accelerator.

Tom400CFI

What year car?

I'd think you could simply re-wire it so that your eliminate the ECM, your enable switch on the shifter becomes the 'on/off" switch for the OD unit.

jazfe

https://www.corvetteforum.com/articl...rdrive-bypass/

James C4

@dieseltech mine is just a switch on the center console. I just turn it on and use it as a fifth gear. I never use it in second or third gears.