LSx T56 rebuild - 56k warning
#1
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Car: 89 IROC/05 RX8
Engine: LS1/LS1
Transmission: T56/T56
Axle/Gears: 3.42 GM/3.55 8.8
LSx T56 rebuild - 56k warning
Well ive had a hell of a '09 season. Moved my 6.0/T56 into my new '97 trans am. And then spun a cam bearing, concequently completely destroying my motor, and then 4th gear decided to disappear on me. Drivetrain was toasted all in one season
Anyways, i decided to pony up and do the T56 rebuild myself, since ive got way too many expenses this winter, dont need to pay someone else to do this haha.
Its fairly straight forward rebuild. However its also meticulous, and requires a photographic memory and some good quality tools.
Make sure you have proper LOCK RING pliers. not snap ring, as they will not help you during the rebuild.
Sorry for the fact that these pictures are fairly low quality. Ive got more on my other cam, ill upload them soon.
It cost me $575 from "The Gear Box" in Garden City, mi. Kevin, who owns it was awesome to deal with, and helped me a ton with this. I got new 1-2 syncro, new 3-4 syncro, billet 3-4 keys, CF Blocker ring kit, steel 3-4 shift fork, bronze fork pads etc. My trans has 60,000 miles on it, so i decided to leave my bearings, and they were in mint shape anyways.
This will be a basic run down, i can answer any questions and can give more detail if needed. Make sure you've got your T56 service manual!
Heres the start. Beautiful aluminum stick of destruction.
After you pull the rear tailshaft housing off, you will be greeted by reverse, and 5-6th gears. Here is shown them removed from the transmission. My 5-6 syncro was in good shape, i put in new syncro key's, c clips, and fork pads. My reverse syncro was in rougher shape, but since its a 1sided part for the reverse, you can flip the syncro and use the new side. I replaced the key's and clip on this one also.
Maincase shown here. 1-4gears are all inside it
With main case removed, here is what your greeted with. On the mainshaft is 1-3 gears, then the 4th gear is part of the input shaft. Also see the counter shaft, and the shift rail with the forks.
Shift rail with 1-2 and 3-4 forks on it. Note steel 3-4 fork and new pads. For lack of better words, the shift fork is a BITCH to get lined back up with the alignment screws. Take LOTS of pictures of your guide alignment before you pull the shift rails out or you've got alotta guessing when it goes back together
Anyways, i decided to pony up and do the T56 rebuild myself, since ive got way too many expenses this winter, dont need to pay someone else to do this haha.
Its fairly straight forward rebuild. However its also meticulous, and requires a photographic memory and some good quality tools.
Make sure you have proper LOCK RING pliers. not snap ring, as they will not help you during the rebuild.
Sorry for the fact that these pictures are fairly low quality. Ive got more on my other cam, ill upload them soon.
It cost me $575 from "The Gear Box" in Garden City, mi. Kevin, who owns it was awesome to deal with, and helped me a ton with this. I got new 1-2 syncro, new 3-4 syncro, billet 3-4 keys, CF Blocker ring kit, steel 3-4 shift fork, bronze fork pads etc. My trans has 60,000 miles on it, so i decided to leave my bearings, and they were in mint shape anyways.
This will be a basic run down, i can answer any questions and can give more detail if needed. Make sure you've got your T56 service manual!
Heres the start. Beautiful aluminum stick of destruction.
After you pull the rear tailshaft housing off, you will be greeted by reverse, and 5-6th gears. Here is shown them removed from the transmission. My 5-6 syncro was in good shape, i put in new syncro key's, c clips, and fork pads. My reverse syncro was in rougher shape, but since its a 1sided part for the reverse, you can flip the syncro and use the new side. I replaced the key's and clip on this one also.
Maincase shown here. 1-4gears are all inside it
With main case removed, here is what your greeted with. On the mainshaft is 1-3 gears, then the 4th gear is part of the input shaft. Also see the counter shaft, and the shift rail with the forks.
Shift rail with 1-2 and 3-4 forks on it. Note steel 3-4 fork and new pads. For lack of better words, the shift fork is a BITCH to get lined back up with the alignment screws. Take LOTS of pictures of your guide alignment before you pull the shift rails out or you've got alotta guessing when it goes back together
#2
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Car: 89 IROC/05 RX8
Engine: LS1/LS1
Transmission: T56/T56
Axle/Gears: 3.42 GM/3.55 8.8
Re: LSx T56 rebuild - 56k warning
Mainshaft with 1-3 gears on it, the 3-4 syncro and 1-2 syncro.
Front plate with 4th gear/input shaft. Mine is in rough shape, you dont want to replace this unless you have to, $180
Bit of a jump here, but here's a look at 5-6 gears installed with the main case back on. Im going to upload a whole bunch of new pictures with more details for you guys. let me know if you want more info!
#3
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Car: 1987 GTA
Engine: LT1
Transmission: T56
Axle/Gears: 9 bolt 3.70 posi
Re: LSx T56 rebuild - 56k warning
Are you sure that's a steel 3-4 fork? Looks like aluminum to me
here's a pic of the steel one
here's a pic of the steel one
#4
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Car: 1991 Trans Am GTA
Engine: LSX (swapping)
Transmission: 4L60E (swapping)
Axle/Gears: 2.73 Posi 10 Bolt
Re: LSx T56 rebuild - 56k warning
I dunno 1-2 looks aluminum but I think the 3-4 looks steel.
#5
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Car: 89 IROC/05 RX8
Engine: LS1/LS1
Transmission: T56/T56
Axle/Gears: 3.42 GM/3.55 8.8
Re: LSx T56 rebuild - 56k warning
1-2 is aluminum, 3-4 is steel.
From what kevin told me is the 1-2 is rarely ever and issue, where the 3-4 is common breakage in the aluminum part
From what kevin told me is the 1-2 is rarely ever and issue, where the 3-4 is common breakage in the aluminum part
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Car: 1989 IROC-Z28 Camaro
Engine: 403 LSX
Transmission: TH400
Axle/Gears: Moser 9" 3.25's
Re: LSx T56 rebuild - 56k warning
Reminds me of my NWC T-5 rebuilding days. Did it about once every 3-5 months lol. It got easier and easier each time. Nice post.
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