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

T56 swap crossmember issue

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Old Jan 13, 2017 | 08:15 PM
  #1  
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From: Rincon, Ga.
Car: 91 Camaro RS
Engine: 305 TPI conversion.
Transmission: T56
Axle/Gears: 3.73 posi 4th gen rear
T56 swap crossmember issue

Got the crossmember in a trade. Seems it's two inches too long. Is this for a different t56?


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Old Jan 14, 2017 | 06:29 AM
  #2  
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From: Sebastian FL
Car: 87 firebird 86 c10 90 mustang
Engine: 383 sbc
Transmission: 97 t56
Axle/Gears: Moser 12 bolt 3.73
Re: T56 swap crossmember issue

The borg warner i think is 1 1/2 inch shorter then the tremic, which one do you have?
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Old Jan 14, 2017 | 01:50 PM
  #3  
tonys91rs's Avatar
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From: Rincon, Ga.
Car: 91 Camaro RS
Engine: 305 TPI conversion.
Transmission: T56
Axle/Gears: 3.73 posi 4th gen rear
Re: T56 swap crossmember issue

Borg warner. However we cut a plate from 1/4 steel and mounted it between the two. Works great
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Old Jan 14, 2017 | 03:46 PM
  #4  
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From: Aridzona
Car: `86 SS / `87 SS
Engine: L69 w/ TPI on top / 305 4bbl
Transmission: `95 T56 \ `88 200-4R
Re: T56 swap crossmember issue

There are three sets of crossmember holes on 83-92 third gens I believe. I don't recall if the front two might be able to be used.

As for LS /LT, the LS bellhousing is about 16mm deeper, the rest of the trans. is the same. The distance you're dealing with is greater than that amount.
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Old Jan 17, 2017 | 10:58 PM
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From: Byhalia MS, just south of memphis
Car: 89 Firebird
Engine: 6.0 LS
Transmission: T-56
Axle/Gears: 3.70
Re: T56 swap crossmember issue

Tony, i have a Spohn crossmember and Alston SFCs also. to get my xmem to lay flat on the frame i red on here to notch it around where the SFC mounts to the car.
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Old Jan 18, 2017 | 02:28 PM
  #6  
tonys91rs's Avatar
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From: Rincon, Ga.
Car: 91 Camaro RS
Engine: 305 TPI conversion.
Transmission: T56
Axle/Gears: 3.73 posi 4th gen rear
Re: T56 swap crossmember issue

If you don't mind can you post pics of what you did? Thanks
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Old Jan 18, 2017 | 02:51 PM
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From: Mass
Engine: 350 TPI
Transmission: A4
Axle/Gears: 3.23
Re: T56 swap crossmember issue

Who makes that crossmember? Check out this thread for pictures. See if it helps. You may have the wrong crossmember. And I wouldnt do the plate you are talking about. It will raise the angle of the driveline which will throw off the pinion angle. For the cost of a new crossmember, Id just buy a new one and be done with it.


https://www.thirdgen.org/forums/tran...ong-tubes.html

Last edited by BOTTLEDZ28; Jan 18, 2017 at 02:54 PM.
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Old Jan 18, 2017 | 03:04 PM
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From: Byhalia MS, just south of memphis
Car: 89 Firebird
Engine: 6.0 LS
Transmission: T-56
Axle/Gears: 3.70
Yeah Tony, I can do that tonight.

Sent from my electronic leash.
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Old Jan 18, 2017 | 05:46 PM
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From: Byhalia MS, just south of memphis
Car: 89 Firebird
Engine: 6.0 LS
Transmission: T-56
Axle/Gears: 3.70
As requested.

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Attached Thumbnails T56 swap crossmember issue-image-346405468.jpg   T56 swap crossmember issue-image-3776345115.jpg  
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Old Oct 14, 2018 | 04:01 PM
  #10  
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From: newark, De
Car: 85 trans am
Engine: 383 stroker
Transmission: 5 speed
Axle/Gears: 9 bolt rear 3:70
Re: T56 swap crossmember issue

I believe I have this same cross member. What are my options and what cross member is this?? I have the same issue right now with my swap. My trans mount won't line up.

Last edited by white85transam; Oct 14, 2018 at 05:37 PM.
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