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Old 10-06-2019, 09:32 AM
conester2013 conester2013 is offline
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Default T-56 Magnum to LS3 - new input shaft?

So I was told by some buddies of mine that I can't just get a bell housing to mount my T-56 to my LS3, and that I will have to change out the trans input shaft because the one that is in it will either be too long or too short.....cant remember which. I haven't heard of anyone doing this. I thought I could just get a quicktime bell housing designed to mate the two up and be good. Can someone tell me if I will need to change the inout shaft?
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Old 10-06-2019, 01:04 PM
randy randy is offline
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Not only does a t56 magnum and ls3 go right together if you use an Fbody bellhousing and throughout bearing you won’t have to worry about shimming it. Exact setup that I have
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Old 10-06-2019, 04:08 PM
raustinss raustinss is offline
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A t56 viper box would need a new input shaft .. the t56 magnum was/is designed literally for these kind of swaps
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Old 10-06-2019, 07:04 PM
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Che70velle Che70velle is offline
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Yeah, depends on the T56. Early models not originally installed behind an LS engine require a new input shaft, front cover, and bell, which requires some setup work. Other T56 boxes, as Ryan said, require a different input shaft as well.
What T56 do you have?
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Old 10-06-2019, 07:44 PM
conester2013 conester2013 is offline
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I have a Tremec T-56 Magnum from American Powertrain that I got 4 years ago when I installed it behind my current 350 small block chevy.
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Old 10-07-2019, 02:53 PM
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Quote:
Originally Posted by randy View Post
Not only does a t56 magnum and ls3 go right together if you use an Fbody bellhousing and throughout bearing you won’t have to worry about shimming it. Exact setup that I have
Same here.
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