My 4 speed got stuck in 1st gear and when you try another gear trans locks up completly . 2nd gear has been a pain for the past few days until tday when it locked in 1st. Its not the adjustment or cables their new dickman cables. Took them off and tried to shift to N by hand and first won't unlock. Anyone had this prob? Posted in the mall looking for another trans. Any ideas will help.

Not being able to move the shift levers by hand is a bad sign...

There is a pin that likes to come out of the shift mechanism, internally.
I have seen a Muncie get stuck in third, so I don't have any problem believing that something similar has happened to yours.

Sounds like mine. Took off this morning and it wouldn't go into 2nd. After a few stops I took off again and tried 2Nd again and it felt like it slipped right in but when I let off the clutch it as still in first. I stopped and went to N but it's still in 1at. Tried going to 3rd and it went right in but it was also in first too so it bound up the Trans and killed the motor. Have just decided to replace the Trans but I'm deff going into it to check out what happened. And will deff check that pin!
Found a M19 any pros or cons over my M17

[This message has been edited by dematrix86gt (edited 11-12-2013).]

quote Originally posted by dematrix86gt:.... And will deff check that pin! Found a M19 any pros or cons over my M17

It might be a bolt. It's been a long time.

quote Originally posted by dematrix86gt: Found a M19 any pros or cons over my M17

M19 is the 1984 sport transmission 4.10 ratio. The engine will turn a little faster at 70mph..and it will be a little quicker.....also the case is not as strong as the M17. I think you can transfer the gears into your M17 case....but wait for someone else to confirm that.

edit: your M17 is 3.65 ratio

[This message has been edited by Gall757 (edited 11-12-2013).]

I never really get rough with my car, its got a crate 3.4 ohv motor in it. If the m19 will hold up to regular use with the usual hard acceleration I'll just switch over. The salvage yard says its a m19 I'm not so sure.,because he said his comp doesn't list a m17 for the 86gt. And he said its out of a 86. Anyone know the casting #s for the m17 vs m19 so I can confirm what they have.

86 is a problem year for the computers because of the mid-year transmission switch to the 5 speed. Often they only list one transmission when actually there were 2 for the V6. There WAS a M17 sold in 1986, and you can tell by the ribs in the case.

identification thread.

//www.fiero.nl/forum/Forum2/HTML/063783.html

[This message has been edited by Gall757 (edited 11-13-2013).]

If its not a daily driver, possibly look into a 5spd getrag. I wouldn't want the 4:10 transmission case behind anything stronger than a 2.8L. The 4:10 gears and your v6 Muncie case would be a better combination.

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I had 2 Muncie 4 speeds lock up like that, both were because of a bent shift fork.