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Will an LT1 T56 work with an LS1?

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Old Jan 17, 2012 | 10:13 AM
  #1  
93transam1234's Avatar
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Will an LT1 T56 work with an LS1?

Getting ready to start my 4l60e - T56 swap on my LT1, but I was think, since i am going through all the work why not put a worked LS1 in there.

I just dont want to go through the trouble of gathering another T56 swap kit.
Old Jan 17, 2012 | 10:15 AM
  #2  
Marc 85Z28's Avatar
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Re: Will an LT1 T56 work with an LS1?

The input shaft is specific to the engine.
Old Jan 17, 2012 | 10:17 AM
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Re: Will an LT1 T56 work with an LS1?

Pretty sure they're the same except for the input shaft and bell housing.
Old Jan 17, 2012 | 10:21 AM
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Re: Will an LT1 T56 work with an LS1?

They are different. Besides what Mark said, I believe the slave cylinder is mounted on the outside of the bell housing on LT1 T56's and inside on the LS1 T56's. It's a complete PITA to swap out an LS1 slave cylinder.
Old Jan 17, 2012 | 10:39 AM
  #5  
93transam1234's Avatar
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Re: Will an LT1 T56 work with an LS1?

ok, since i have 0% exp with manual transmissions ill just stick to what i have now.
Old Jan 17, 2012 | 12:44 PM
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Re: Will an LT1 T56 work with an LS1?

GMHTP (I think) just did an article on this swap so it can be done.
Old Jan 17, 2012 | 02:37 PM
  #7  
97FormulaWS-6's Avatar
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Re: Will an LT1 T56 work with an LS1?

It can be done, requires a new mid-plate, bellhousing, and input shaft. Easier to just pick up a LS1 trans, or get a hold of the place in texas that does T-56 trans and do a trade-in. I believe the pedals will work, but you will need a different MC as well.
Old Jan 17, 2012 | 09:28 PM
  #8  
SCNGENNFTHGEN's Avatar
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Re: Will an LT1 T56 work with an LS1?

Originally Posted by quickchicken
GMHTP (I think) just did an article on this swap so it can be done.
Yes they did.
Old Jan 17, 2012 | 11:23 PM
  #9  
ACE1252's Avatar
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Re: Will an LT1 T56 work with an LS1?

For those who do get interested in doing a LS1 conversion on a LT1 T56......

Home of Tranzilla - Rockland Standard Gear, Inc.

Call those guys and ask about part number "LT1/LS1". The kit should come with a LS1 T56 front cover, bearing shims, and LS1 T56 input shaft. The GMHTP article reports that the kit is $398.00.
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