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

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Old 05-23-2009, 01:18 AM   #1
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Join Date: May 2005
Location: Franklin, TN
Posts: 6
Car: 86 Firebird Coupe
Engine: 5.0 LG4
Transmission: Automatic, want a T5
Axle/Gears: 2.77

Classifieds Rating: (2)
T5 Swap for those who have done it, a few ?'s

I'm going to look at a T5 setup tomorrow, a guy is swapping it out for an automatic, and he is selling everything needed to do the swap. Before I invest in doing this, I have some questions that I couldn't really find from the how-to and searching.

1: If I install the manual trans, how will this affect the stock automatic computer controls in regards to the automatic? Will the car stall when I come to a stop? In my book it describes the park/neutral switch, which tells the ECM when the trans is in park or neutral. Is there a way to ground this out so it thinks its always in neutral?

2: Can I swap out the prom for a manual transmission one? Will this solve the above problem of idling, or not killing the engine when I come to a stop?

3: Will the VSS that comes on this manual transmission give me any speedometer reading? I believe I need to get a new driven gearto correct the speedo, but I have the lowly 2.77 rear end. Is there a gear available that will mate the two?

4: The how-to in the tech section does not mention about the torque arm mount, but other threads do. Is the difference in the torque arm itself, or can I just swap the bushings to bolt it to the transmission?

It doesn't seem to be a very difficult swap, but I'm trying to find out more of the later issues after everything is bolted up. Thanks.
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Old 05-23-2009, 01:40 AM   #2
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Join Date: Dec 2007
Location: Belleville, KS
Posts: 533
Car: 1986 camaro coupe
Engine: 305 v8 HO, edlebrock carbed
Transmission: Borg Warner WC T5
Axle/Gears: what ever came with these cars

Classifieds Rating: (2)
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Re: T5 Swap for those who have done it, a few ?'s

Ok ecm is just the engine only. the Prom is for engine and transmission. I would almost bet since you have an 86 it won't bother it. Hook it up the only thing u have to do it do some wiring with the nuetral switch back up switch ect.... that is on the automatic shifter. called a nuetral safety switch heard its easy just hook it up. there is a post if i can find it i will show you.
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Old 05-23-2009, 01:43 AM   #3
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Join Date: Dec 2007
Location: Belleville, KS
Posts: 533
Car: 1986 camaro coupe
Engine: 305 v8 HO, edlebrock carbed
Transmission: Borg Warner WC T5
Axle/Gears: what ever came with these cars

Classifieds Rating: (2)
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Re: T5 Swap for those who have done it, a few ?'s

I am also going to be doing a t5 swap to. So i will get info for the both of us. but what i read it will all hook up.
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Old 05-23-2009, 07:27 PM   #4
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Join Date: May 2005
Location: Franklin, TN
Posts: 6
Car: 86 Firebird Coupe
Engine: 5.0 LG4
Transmission: Automatic, want a T5
Axle/Gears: 2.77

Classifieds Rating: (2)
Re: T5 Swap for those who have done it, a few ?'s

Cool, I did end up getting this setup. I also got question #4 answered. The torque arm mount is different, but I got the mount/bushing that goes with the T5. Pretty complete setup, I have everything except the upper console and pilot bearing. Good luck Berlin305. I guess this is the bump for the remaining 3 questions!
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Old 05-23-2009, 09:57 PM   #5
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Join Date: Sep 2003
Location: Folsom, CA
Posts: 10,034
Car: 89 IROC-Z
Engine: F1A 383
Transmission: Th400
Axle/Gears: 10 Bolt 3.42

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Re: T5 Swap for those who have done it, a few ?'s

Who are you buying from? I was buying from a fellow here by the name of ron I believe who was also doing an auto conversion, after I sent payment I kept getting excuses about shipping it, and eventually nothing, so I had to file a paypal claim to get my money back. just a heads up, if your getting it in person, much better for you.
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Old 05-24-2009, 11:47 AM   #6
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Join Date: Dec 2007
Location: Big Rock,IL
Posts: 492
Car: 91 RS
Engine: 350 TBI
Transmission: World Class T-5
Axle/Gears: 3.27 9-Bolt LSD

Classifieds Rating: (1)
Re: T5 Swap for those who have done it, a few ?'s

The gear selector sensor is attached to the shifter assembly and you can easily jumper two wires to over-ride that feature, I do not remember the wire colors off the top of my head. I'm doing a complete engine and tranny swap so I am learning custom prom tuning, It is very easy to delete auto tranny, I think I read that the only thing that the ecu runs through the trans is the t converter lock up.

As far as stalling, I do not think you have anything to worry about because when you come to a stop you should either have your clutch let in or your tranny out of gear so it would be no different than your auto car ideling in park or neutral.

With the speedo, it all matters what drive gear you have if there is one that will match up. GM dealerships can order you the drive and driven gear for under 20 bucks but changing the drive gear is a big ordeal. You have to find a parts man willing to work with you cause as far as I know GM ships those parts (and most other small bs parts) in 5 packs and I have had guys trying to sell me all 5 because he didn't 4 of them sitting on his shelf.

Hope that helps.

Last edited by Jeff91RS; 05-24-2009 at 11:50 AM.
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Old 05-26-2009, 11:39 AM   #7
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Join Date: May 2005
Location: Franklin, TN
Posts: 6
Car: 86 Firebird Coupe
Engine: 5.0 LG4
Transmission: Automatic, want a T5
Axle/Gears: 2.77

Classifieds Rating: (2)
Re: T5 Swap for those who have done it, a few ?'s

Quote:
Originally Posted by TraviZ View Post
Who are you buying from? I was buying from a fellow here by the name of ron I believe who was also doing an auto conversion, after I sent payment I kept getting excuses about shipping it, and eventually nothing, so I had to file a paypal claim to get my money back. just a heads up, if your getting it in person, much better for you.
Are you in TN or CA? This guy was in TN, I found his ad on craigslist. When I got there, he had everything pulled out but the pedals and M/C. The other parts were placed about his garage, so it did not look like he had been preparing to ship them. I hope you are successful in getting your money back, I hate it when people flake on you, but I've had success with paypal before getting refunded for non-shippers
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Old 05-26-2009, 02:15 PM   #8
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Join Date: Sep 2003
Location: Folsom, CA
Posts: 10,034
Car: 89 IROC-Z
Engine: F1A 383
Transmission: Th400
Axle/Gears: 10 Bolt 3.42

Classifieds Rating: (2)
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Re: T5 Swap for those who have done it, a few ?'s

i am in Cali, and he lives in nashville, TN. it was here on TGO classifieds. I did get my money back thank god.
__________________
YOUR 90-92 CAMARO TACHOMETER BROKE? I CAN FIX IT. PM ME FOR DETAILS.

SuperStreet in the making...It's a work in progress.
SBC, Forged internals, 215cc aluminum heads, 90mm TB, .589/.612 lift cam, Long tube headers, 3.5" exhaust. 9" Procharger. Powered by Holley HP EFI

-1/4 mile 11.2 @ 119mph 1.7 60'
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Old 05-26-2009, 02:15 PM
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