my first question to you would be, did it ever hit 3rd gear with the shift kit? and then, who put the shift kit in? is it possible something could have been put back together wrong, or left out?
If your turbo 350 won't shift out of first gear, it could indicate a frozen transmission gear. You should first check to ensure the fluid levels are in the right place.
No thanks, I do not want to shift to 3rd gear or drive.
97 Chevy Z71 truck will not shift into third gear.
It's use is automatic. You get a boost with every gear shift.
If would not be bad for a car engine to shift from third to second gear if you are traveling at 30mph.
The tranny slipping
If your transmission is not shifting into third gear and overdrive it could be a parking pawl. This prevents the transmission from rotating.
More than likely your shift cables need to be lubricated.
It won't hurt anything, you just have to shift into and out of passing gear manually.
3000 RPM
Bad clutch pak
It might be that your clutch is not disengaging properly, so your gears won't shift.