LT1 T56/LS1 T56 frankenstien
05-08-2012, 09:29 PM
#1
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LT1 T56/LS1 T56 frankenstien I have a completely screwed 200k+ LS1 T56 that needs absolutely everything and I have a low mileage smooth shifting LT1 T56. My idea is to combine the 2 to make the LT1 fit my T/A but I'm not sure what all the differences are. Front plate and input shafts are the obvious ones but I need to know it there's anything on the LS1 version I should try to put on the LT1 one. I'm not against buying a few new parts but I am not willing to replace all the crap that's bad on the LS1 one when the other one is golden.
05-08-2012, 10:27 PM
#2
I just went through the same thing. I called D&D, and bought a new mid-plate and input shaft since I'll never need an LT1 T56 again. ~$500 in parts later, I was back on the road.
The swap is easy enough, I used a 5 gallon bucket to stand up the transmission and stabilized it with some boards, and got to work. It takes a little finesse to remove/install the input shaft, but trust me, it'll go.
You'll also need a dial indicator and shim kit to set the endplay. I can't remember the exact specs, but its pretty much as close to .000 as you can get without preload. The "new" T56 works great, made me realize in what sad shape my LS1 T56 had been in since I got the car going.
(BTW, the original LS1 T56 is definately going for a nice rebuild next winter)
The swap is easy enough, I used a 5 gallon bucket to stand up the transmission and stabilized it with some boards, and got to work. It takes a little finesse to remove/install the input shaft, but trust me, it'll go.
You'll also need a dial indicator and shim kit to set the endplay. I can't remember the exact specs, but its pretty much as close to .000 as you can get without preload. The "new" T56 works great, made me realize in what sad shape my LS1 T56 had been in since I got the car going.
(BTW, the original LS1 T56 is definately going for a nice rebuild next winter)
05-09-2012, 06:49 PM
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Trans is a 95 so I'm good to go. It was a low mileage wreck so I might just change out the front parts with my bad tranny and just go with it for a while. Maybe put the LT stuff on the bad tranny and sell it for $500 or so
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05-09-2012, 09:05 PM
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I'm hoping everything else is the same as far as performance/replacement parts are concerned. Parts sites don't seem to specify on years so I think they're pretty much identical except for 93
05-10-2012, 07:58 AM
#10
It has the weak second gear, your trans had the stronger one. Honestly you might would be better off doing a rebuild on yours. What all is wrong with it? Also a rebuilt one is more or less a New trans (less problems in future) plus we offer upgraded parts even on our level 1 rebuilds. By the time you buy that trans and potentially buy the parts to convert you could be at the rebuilt price w/parts (maybe a little less, but hey you would have a new stronger trans). However, if you buy that trans to do the swap we will buy your old trans from you.
Check out our rebuilds:
http://www.tickperformance.com/1993-...camaro-trans-am/
Check out our rebuilds:
http://www.tickperformance.com/1993-...camaro-trans-am/
05-11-2012, 06:18 PM
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Ok I'll break it down for you, 240k+ miles. 3rd gear is completely gone, 3-4 fork is bent so bad it's stupid, the PO ran it out of tranny fluid to the point of having to use a hammer to get it out of gear, he pulled boats and trailers with it non stop, it had sticking clutch syndrome for 50k before it was fixed and it was forced into 3rd during that time, the fluid looked more silver than red when I drained it, the guy I have doing my rebuild said I should replace all 5 gears and reverse, and I have all the parts to do the swap out for the LT1 version. I can easily buy a LS1 2nd gear if I want and this entire ordeal is only costing me $1200 for 2 trannies and the labor to mix the good one with the bad and still have a useable core left over. Not to mention I've already spent that money and the process is about 75% of the way complete. I will be interested in selling y'all the core if one of my idiot friends don't come up with a grand to pay me for it
05-11-2012, 09:48 PM
#12
It has the weak second gear, your trans had the stronger one. Honestly you might would be better off doing a rebuild on yours. What all is wrong with it? Also a rebuilt one is more or less a New trans (less problems in future) plus we offer upgraded parts even on our level 1 rebuilds. By the time you buy that trans and potentially buy the parts to convert you could be at the rebuilt price w/parts (maybe a little less, but hey you would have a new stronger trans). However, if you buy that trans to do the swap we will buy your old trans from you.
Check out our rebuilds:
http://www.tickperformance.com/1993-...camaro-trans-am/
Check out our rebuilds:
http://www.tickperformance.com/1993-...camaro-trans-am/
05-11-2012, 09:54 PM
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My **** is an aluminum case full of gravel with a hurst ripper shovel sticking out of it so anything is better than that but we are freshening the LT1 one up with new bearings and seals so I think I'll run with it for a bit
05-12-2012, 10:46 AM
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Luckily I have a knack or knowing when smoke is blown up my ***. Just got back from Aamco and we looked up the part# for the second gear on a 1995 Z28 and a 02 Z28 and it has the SAME EXACT PART#. Salesmen should be banned from getting on here and putting BS in people's heads. Oh well, guess I'll be making my own adjustable MC instead of buying the Tick one
05-13-2012, 12:26 PM
#16
in all fairness, maybe its an updated part/different supplier that makes the newer version better. doesnt necessarily mean it would get a different part number, especially if we are talking OEM. hell you can have five different versions of the same "part" because GM bought that part from five different companies, and they'll all have the same part number, even revisions, and one part may stand out as stronger than the others. like the newer 5 pinion 4l60e's and the old 4 pinion 4l60e's, once the 4 pinion planetaries run out, guess what you'll get if you use the 4 pinion p/n to order a replacement? a nice new five pinion planetary. maybe a better example would be the myriad of 02 f-bodies that got LS6 blocks. you look on their build sheet or look up the part number for the replacement block, u get the LS1 block p/n...just saying there MAY not be malice in post #10. not saying there isn't, but the possibility that there isn't.
05-13-2012, 04:11 PM
#17
Luckily I have a knack or knowing when smoke is blown up my ***. Just got back from Aamco and we looked up the part# for the second gear on a 1995 Z28 and a 02 Z28 and it has the SAME EXACT PART#. Salesmen should be banned from getting on here and putting BS in people's heads. Oh well, guess I'll be making my own adjustable MC instead of buying the Tick one
https://ls1tech.com/forums/manual-tr...chro-wear.html
You may want to have your estrogen levels checked.
05-13-2012, 07:10 PM
#18
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Sorry couldn't hear you over me slamming my "weaker" 2nd gear all day long. At least it actually goes into 2nd instead of hearing a loud grinding noise and it trying to pop out of gear like the 02 tranny's "stronger" 2nd gear
05-14-2012, 09:48 PM
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