1961 Chevy C20 Apache with a 1967 drive train!

[61Chevy454]

Originally Posted by Bigdav160

Cool truck but 454/TH400 drivetrain might have been from a 1977 but not a 1967.

For not shifting and acting like it was going to neutral I would check the governor. Especially the gear part.

Sorry about the wrong post. Admin, please move it if needed. I'm just hoping the tranny isn't dead. I really don't want to do my first tranny rebuild in my apartment kitchen, haha.

[Steeveedee]

Sounds like the vacuum modulator or the line to it. Pull the modulator vacuum hose up on the manifold and see if there is ATF in it. Since it is a 4X4, it might be easier to just pull the line at the trans. The vacuum modulator is on the passenger's side of the trans. If you get fluid out of it, it's bad. It might be bad anyway, but fluid in the vacuum line is a certainty that it is toast. And they can go bad, just like that, too.

[MARKDTN]

Originally Posted by Steeveedee

Sounds like the vacuum modulator or the line to it. Pull the modulator vacuum hose up on the manifold and see if there is ATF in it. Since it is a 4X4, it might be easier to just pull the line at the trans. The vacuum modulator is on the passenger's side of the trans. If you get fluid out of it, it's bad. It might be bad anyway, but fluid in the vacuum line is a certainty that it is toast. And they can go bad, just like that, too.

X2 on the modulator