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Tranny Popped out?

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Old Jun 11, 2008 | 08:27 PM
  #1  
Jix01's Avatar
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Posts: 153
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From: Yelm,WA
Car: 1990 Pontiac Firebird
Engine: 305 5.0 TBI
Transmission: 700R4
Axle/Gears: 2.73 Open Diff.
Tranny Popped out?

I was cruising along down the road earlier today and some guy stopped in the middle of the road so i decided to get around him i florred it and right when it shifted down i heard a loud thump like the tranny was hitting the floorboard. so i stopped on a back road with it in first gear went about 10MPH and hit the gas a few times and every time i hit the gas it would make a loud thunk like one of the mounts or something that holds the tranny came off... how hard is this to replace??
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Old Jun 11, 2008 | 08:44 PM
  #2  
rockit's Avatar
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Posts: 785
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From: Middleburg Hts. OH
Car: 85 T/A, 92 Rs
Engine: L98:D,L03:<
Transmission: 700r4x2
Axle/Gears: 3.23 bw, 2.73 10 bolt.
Re: Tranny Popped out?

hahah..

yes, your bottom mount most likely has seperated as they do, it's easy, jack it up put it all up o jacks then use your jack to support and raise the tailshaft, remove old, insert new, lower jack tighten, tighten again, done. then go drift around that dude.
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Old Jun 11, 2008 | 08:45 PM
  #3  
Jix01's Avatar
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Posts: 153
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From: Yelm,WA
Car: 1990 Pontiac Firebird
Engine: 305 5.0 TBI
Transmission: 700R4
Axle/Gears: 2.73 Open Diff.
Re: Tranny Popped out?

i wasn't in a drifting mood..... lol
----------
Thanks!

Last edited by Jix01; Jun 11, 2008 at 08:46 PM. Reason: Automerged Doublepost
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Old Jun 11, 2008 | 10:00 PM
  #4  
Johnx's Avatar
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Joined: May 2008
Posts: 26
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From: SC
Car: 1990 Iroc
Engine: 383
Transmission: th350
Axle/Gears: 4.10
Re: Tranny Popped out?

A few weeks ago the same thing happened to me. Turns out I was missing 2 bolts on the crossmember holding the tranny up and it was sliding left and right.
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Old Jun 11, 2008 | 10:07 PM
  #5  
Jix01's Avatar
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Joined: May 2008
Posts: 153
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From: Yelm,WA
Car: 1990 Pontiac Firebird
Engine: 305 5.0 TBI
Transmission: 700R4
Axle/Gears: 2.73 Open Diff.
Re: Tranny Popped out?

no....when you push an automatic to the floor it will down shift...duh lol
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Old Jun 11, 2008 | 10:11 PM
  #6  
Saber's Avatar
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Joined: Jul 2007
Posts: 777
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From: Tampa/New Hampshire
Car: 91 camaro RS, 87 T/A
Engine: 350 TBI, 305 TPI
Transmission: 700r4
Axle/Gears: 4th Gen 3.42/BW 3.45
Re: Tranny Popped out?

Same thing happened to me. After my swap, turns out on of my mounts was loose. Was driving the car the day i got it home and it scared the **** out of me and my roommate, mine wasnt as loose as yours probably is though, i could still drive around.
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Old Jun 11, 2008 | 10:18 PM
  #7  
Jix01's Avatar
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Joined: May 2008
Posts: 153
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From: Yelm,WA
Car: 1990 Pontiac Firebird
Engine: 305 5.0 TBI
Transmission: 700R4
Axle/Gears: 2.73 Open Diff.
Re: Tranny Popped out?

i can still drive around fine it just hits the floor board if i hit the gas kinda hard real quick. but i can drive it around normal without it hitting.
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Old Jun 11, 2008 | 10:24 PM
  #8  
dirtywhiteZ28's Avatar
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Joined: Jan 2008
Posts: 293
Likes: 2
From: Houston, Texas
Car: 84' Z28-White/T-Tops
Engine: H code LG4 305
Transmission: TH700R4
Axle/Gears: Stock 3.23
Re: Tranny Popped out?

Just a simple broken rear trans. mount. Get it replaced before you tear up that torque arm bushing, You really don't want to find out how frustrating it is to get that one out.
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Old Jun 12, 2008 | 02:10 AM
  #9  
Johnx's Avatar
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Joined: May 2008
Posts: 26
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From: SC
Car: 1990 Iroc
Engine: 383
Transmission: th350
Axle/Gears: 4.10
Re: Tranny Popped out?

Originally Posted by Jix01
i can still drive around fine it just hits the floor board if i hit the gas kinda hard real quick. but i can drive it around normal without it hitting.

Exactly how it was for me. Aslong as it shifted at low rpms and didn't jump on the gas it was fine. I crawled under there and noticed 2 bolts were missing and pushed the tranny and it slid sideways then I remembered I saw a bolt in the grass and put that in the crossmember and it stopped.
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