LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

using a gto t56 in a f body

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Old Apr 18, 2011 | 02:51 AM
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ls6iroc's Avatar
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From: Buffalo NY
Car: 89 iroc
Engine: ls6
Transmission: 4l60e
using a gto t56 in a f body

I have just picked up a t56 setup from a 2004 gto. i have read about changing the shifter cup in the t56. is this just the tail housing or is there more? also if anyone has a website for the parts.
I have one more question. i have seen alot of debate about which pedals to use the 3rd gen or ls1 is one easier or better? thanks

Last edited by ls6iroc; Apr 18, 2011 at 03:02 AM.
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Old Apr 18, 2011 | 08:56 AM
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From: Fort Myers, FL
Car: 91 Firebird
Engine: 6.0
Transmission: T56
Axle/Gears: 3.73
Re: using a gto t56 in a f body

a quick search on LS1tech netted me this result

http://www.ls1tech.com/forums/manual...-firebird.html

I looked into doing the swap when I broke my T56, but decided just to rebuild what I had
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Old Apr 18, 2011 | 09:08 AM
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Car: 1989 IROC-Z, 1979 Malibu Classic
Engine: LSx 5.3
Transmission: MN12 6-speed, 4L60E
Axle/Gears: 4th gen 3.42
Re: using a gto t56 in a f body

I am running the MN12 in my car, you don't have to do anything to the tailshaft or the housing. Just change the shifter cup, buy an f-body shifter, and you're good to go! Oh and you have to use an LS2 starter with the MN12 bellhousing, I've tried using the f-body and truck starter and neither one fits.
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Old Apr 18, 2011 | 01:25 PM
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From: So Cal
Car: 87 IROC-Z
Engine: LsX
Transmission: MN12 6speed
Axle/Gears: 3:42
Re: using a gto t56 in a f body

Originally Posted by dynodanmanda79
I am running the MN12 in my car, you don't have to do anything to the tailshaft or the housing. Just change the shifter cup, buy an f-body shifter, and you're good to go! Oh and you have to use an LS2 starter with the MN12 bellhousing, I've tried using the f-body and truck starter and neither one fits.
yup ! the ls2 starter was a pita to locate.
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Old Apr 18, 2011 | 02:00 PM
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From: Crestview, FL.
Car: 1989 IROC-Z, 1979 Malibu Classic
Engine: LSx 5.3
Transmission: MN12 6-speed, 4L60E
Axle/Gears: 4th gen 3.42
Re: using a gto t56 in a f body

Originally Posted by TPI TERR
yup ! the ls2 starter was a pita to locate.
Yeah it was, I think I ended up buying a cheapie rebuilt one on ebay! LOL
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Old Aug 24, 2015 | 03:41 PM
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From: Jackson NJ
Car: 1984 T/A
Engine: LQ4
Transmission: T56
Axle/Gears: Ford 8.8 4.10 gears
Re: using a gto t56 in a f body

Originally Posted by dynodanmanda79
I am running the MN12 in my car, you don't have to do anything to the tailshaft or the housing. Just change the shifter cup, buy an f-body shifter, and you're good to go! Oh and you have to use an LS2 starter with the MN12 bellhousing, I've tried using the f-body and truck starter and neither one fits.
what driveshaft are you using?
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Old Jan 25, 2018 | 01:21 PM
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From: south dakota
Car: 1988 Irocz
Engine: 350 sbc
Transmission: T5
Axle/Gears: 3.42s i think??? never checked
Re: using a gto t56 in a f body

Originally Posted by dynodanmanda79
I am running the MN12 in my car, you don't have to do anything to the tailshaft or the housing. Just change the shifter cup, buy an f-body shifter, and you're good to go! Oh and you have to use an LS2 starter with the MN12 bellhousing, I've tried using the f-body and truck starter and neither one fits.
is there a provision for the stock torque arm mount or are you using A relocation mount on a crossmember?
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Old Jan 25, 2018 | 01:47 PM
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From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Re: using a gto t56 in a f body

Originally Posted by domina7e
is there a provision for the stock torque arm mount or are you using A relocation mount on a crossmember?
I am pretty certain the GTO T56 uses the same tailhousing as the F-body. So your mounts are the same. However, there are plenty of aftermarket cross members that can relocate it.
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