Transmissions and Drivetrain Need help with your trans? Problems with your axle?

tranny wont engage

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Old Apr 19, 2004 | 09:57 PM
  #1  
SanitariumTour0's Avatar
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From: Manheim, PA
Car: 88 GTA
Engine: 355
Transmission: 700R4
Axle/Gears: 3.23
tranny wont engage

Ok I posted about this in the tranny forum too but didnt get much of a response. Well after 10 months of building up my GTA from stock to 355, the tranny wont engage. I finally got it running and it sounds like a beast! But now it sucks cuz I cant drive it anywhere. Im wondering what wouldnt make the tranny engage at all. All wires and the tv cable are hooked up. I got a used TC from someone on here and the tranny itself came from my camaro that was wrecked before.

There is a whine that comes from the engine whenever I rev it. I dont know whether it is something from the tranny or the double chain timing gear I put on. It is pretty loud and sounds like a supercharger. If anyone else needs any more info to help me out, I'd happily provide it.

Also how could I check if it is actually the tranny or the TC giving me the problem?
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Old Apr 19, 2004 | 10:01 PM
  #2  
eric305TPI's Avatar
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From: Houston / The Woodlands, TX
Car: 82 ElCamino, looking for a 3rd gen
Engine: 305 TPI(427SB in progress) 730 $8D
Transmission: THM350 (Getting a 4L80E soon)
Axle/Gears: 10 Bolt w/ 2.43 gears :(
First I would make sure there is oil on the trans stick while the engine is idling in park.

Last edited by eric305TPI; Apr 19, 2004 at 10:49 PM.
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Old Apr 19, 2004 | 10:42 PM
  #3  
SanitariumTour0's Avatar
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From: Manheim, PA
Car: 88 GTA
Engine: 355
Transmission: 700R4
Axle/Gears: 3.23
there is...but why would that not make the tranny engage? The engine runs perfect but now it just wont move.
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Old Apr 19, 2004 | 10:48 PM
  #4  
eric305TPI's Avatar
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From: Houston / The Woodlands, TX
Car: 82 ElCamino, looking for a 3rd gen
Engine: 305 TPI(427SB in progress) 730 $8D
Transmission: THM350 (Getting a 4L80E soon)
Axle/Gears: 10 Bolt w/ 2.43 gears :(
There is a good chance that if there is no oil on the stick the fluid level is too low for the pump to send the fluid through the trans.
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Old Apr 19, 2004 | 11:54 PM
  #5  
SanitariumTour0's Avatar
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Joined: Dec 2002
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From: Manheim, PA
Car: 88 GTA
Engine: 355
Transmission: 700R4
Axle/Gears: 3.23
ok i will double check that tomorrow. We put 5 full quarts of oil in it so I think that is how much it holds. Before we ran the engine after the breakin with the new oil, we checked and it was fine.

Does anyone have experience with those double chain timing belts? Do they really sound that loud?

Last edited by SanitariumTour0; Apr 20, 2004 at 12:04 AM.
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Old Apr 20, 2004 | 11:43 AM
  #6  
SanitariumTour0's Avatar
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Joined: Dec 2002
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From: Manheim, PA
Car: 88 GTA
Engine: 355
Transmission: 700R4
Axle/Gears: 3.23
nebody else? it still wont go into gear and I havent got a whole lot of answers.
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Old Apr 20, 2004 | 04:32 PM
  #7  
SanitariumTour0's Avatar
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Joined: Dec 2002
Posts: 143
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From: Manheim, PA
Car: 88 GTA
Engine: 355
Transmission: 700R4
Axle/Gears: 3.23
hey thanks alot mods for moving this topic. The TECH/general engine forum is fine for this thread. I guess it doesnt matter now though since Im not getting much of an answer from anyone anyway no matter where it is.
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Old Apr 21, 2004 | 01:17 PM
  #8  
eric305TPI's Avatar
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Joined: Oct 2003
Posts: 302
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From: Houston / The Woodlands, TX
Car: 82 ElCamino, looking for a 3rd gen
Engine: 305 TPI(427SB in progress) 730 $8D
Transmission: THM350 (Getting a 4L80E soon)
Axle/Gears: 10 Bolt w/ 2.43 gears :(
If the trans fluid is at the correct level and it still wont go into gear, then I would have to say there is a mechanica failure in the valve body of the trans or a burn't clutch pack. No I don't have any experience on the double roller chains. They shouldn't be loud though.
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Old Apr 21, 2004 | 02:44 PM
  #9  
SanitariumTour0's Avatar
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Joined: Dec 2002
Posts: 143
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From: Manheim, PA
Car: 88 GTA
Engine: 355
Transmission: 700R4
Axle/Gears: 3.23
well i might have found out the problem via pro built automatics. He is very knowledgable it sounds. I think it might be because I put a 30 spline TC on an 83 tranny which uses 27 spline TC's. I hope that is the reason so I really dont have to buy much. Thanks for trying to help.
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Old Apr 21, 2004 | 09:19 PM
  #10  
eric305TPI's Avatar
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Joined: Oct 2003
Posts: 302
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From: Houston / The Woodlands, TX
Car: 82 ElCamino, looking for a 3rd gen
Engine: 305 TPI(427SB in progress) 730 $8D
Transmission: THM350 (Getting a 4L80E soon)
Axle/Gears: 10 Bolt w/ 2.43 gears :(
That would make sence and make alot of noise since the splines weren't lining up. I hope nothing was damaged in the process.
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Old Apr 21, 2004 | 09:43 PM
  #11  
SanitariumTour0's Avatar
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Joined: Dec 2002
Posts: 143
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From: Manheim, PA
Car: 88 GTA
Engine: 355
Transmission: 700R4
Axle/Gears: 3.23
i agree...i guess we'll find out when i tear the tranny out again.
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