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Old 03-29-2009, 11:09 AM
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New And Need Help with 350 turbo Tranny,

I have a 1980 Olds Cutlass with a rebuilt Chevy 350 small block. Attached to that is a Turbo 350 tranny. When I start the engine and put the car in reverse it stalls. I do not know a lot about transmissions so I am looking for any and all the help I can get.
I have checked to make sure when I shift i am shifting into gear and not between gears but it still stalls. I have been reading on other post that it could be a bad torque converter is this a possibility?

Any help on this would be great.
Thanks

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Last edited by mseifried; 03-30-2009 at 01:11 PM. Reason: Wong Tranny Discription
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Old 03-29-2009, 11:17 AM
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350 Turbo Trans Issue, Stalls engine in Reverse

OK here is my issue of the day, I have a 1980 Olds cutlass with a rebuilt Chevy 350 small block, and a 350 turbo Tranny installed. When I start the engine and put the car in reverse it stalls. I do not know a lot about transmissions so I am looking for help.
I have reworked the gear shift so when I shift into gear the tyranny is not between gears but it still stalls. I have been reading on other post that it could be a bad torque converter is this a possibility?

Any help on this would be great.
Thanks

Last edited by mseifried; 03-30-2009 at 06:49 AM. Reason: New Title
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Old 03-29-2009, 01:52 PM
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Sounds like a t-250C or t-350C transmittin with a clogged up solenoid for converter lock up control.

You could try unplugging the electrical to the trans.

There would be a connector near the shifter shaft linkage at the transmittin... just behind the linkage , above the pan rail area.
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Old 03-29-2009, 05:15 PM
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350 Trans Issue, Stalls engine in Reverse

Crosley,

Thank you. I could not located this electrical conection on my trans.

Last edited by mseifried; 03-29-2009 at 05:57 PM.
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Old 03-30-2009, 10:02 PM
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i vote for ignition timing problem or vacuum leak at carb or intake gaskets.


check both


what is your idle speed rpm both in gear and out of gear ?


on the side of the trans just above the oil pan gasket is where a large electrical plug will be

if th350c then its narrow oval/rectangle black

if 200 or 250c then should be square and twice as big as the 350c ones and white colored

have ot be completely under the tranny and looking/feeling along just above the pan gasket level on the case


my th350c from an 81 pickup




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Old 03-30-2009, 10:09 PM
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check timing and set it correctly

also look for vacuum leak at carb base gasket and intake manifold gaskets too

also make sure idle speed is correct

one of these is bad
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Old 03-30-2009, 10:15 PM
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mseifried,

please do not start multiple threads on the same question / car.

I merged your two threads into one here. That will keep all the answers for you in one thread.

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Old 03-31-2009, 11:35 AM
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350 trans

Crosley,

Thank you I couldn’t figure out how to delete the one.
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Old 03-31-2009, 11:40 AM
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350 Turbo

Fast68,

There should be a electrical connection here?
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Old 03-31-2009, 04:36 PM
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Quote:
Originally Posted by mseifried
Fast68,

There should be a electrical connection here?
Black plug connector above the pad with stamped Vin # above pan rail.
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Old 04-05-2009, 12:01 AM
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Quote:
Originally Posted by mseifried
Fast68,

There should be a electrical connection here?
yes that is the TH350-C torque converter lockup plug

the black thing there

good luck!
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Old 04-05-2009, 01:04 AM
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Not all '80's had the 350C, even though it was out. And there's the possibility that it was replaced w/a TH350 even if it did once have the 350C.

I'm gonna guess he says it stalls in Reverse, because it doesn't stall in Drive. Otherwise he would've just said, "it stalls when I take off".

If that's the case (and who knows if it is or nor- SAH not me! lol), there's the chance that the idle's too low because of bad plugs, a vacuum leak, timing retarded- whatever.

Why just reverse? If it's just reverse, I can only think that because the gear ratio is taller in R than D at take-off, the engine's stalling.

How lame is THAT for an explanation??!!

Yeah, but no- what Crosley said. Sounds good to me.
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Old 04-14-2009, 01:52 PM
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I just wanted to thank you guys for taking the time to help me out. I found that there were a few things I did wrong during my reassembly of the transmission to the motor,
Thanks for all your help
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