thirdgengta350

iTrader: (4)

me and my buddy are gonna be doin a fun swap into a miata. we know we're gonna be going with an f-body t-56. but i'm looking for some pro's and con's as well as the major differences between the lt1 t-56 and the lsx t-56. i'm gonna continue to search for any answers but any information will definately be helpful. thanks in advance!

01ssreda4

iTrader: (96)

Input shaft is different. The input shafts can be swapped though....

thirdgengta350

iTrader: (4)

yeah thats really all i'm for sure about is that the input shafts are diff lengths. but like you said they're interchangeable. thanks

01ssreda4

iTrader: (96)

I believe a new shaft is about $195 brand new.....

Mkelcy

iTrader: (3)

I'm not sure there's a 2.97:1 input shaft in the LS1 length; so if they've got a 2.97:1 first gear LT1 T56, they may be SOL. For a little info on the T56's as of about 2 years ago, take a look here: http://www.camaros.net/forums/showthread.php?t=98387

ElkySS

iTrader: (6)

theres alot more differences than that. the ls1 t56 was made in mexico and has alot of problems. it has aluminum shift forks while the lt1 t56 has iron shift forks and was made in germany. lt1 t56s are known to handle alot of power. find call911 hes putting down over 600rwhp through a stock lt1 t56

Spartan7

iTrader: (7)

Where did you get that info? All 94-02 T56's have the same torque rating and are the same internally. The only difference is that it used to be produced by Borg Warner, but in 1998 it was bought by Tremec.

A LS1 T56 has a longer input shaft, AND the front adapter plate must be changed (nobody even mentioned this). It's been covered many times, and there's a write up on here how to do it.

ElkySS

iTrader: (6)

call911 told me. and like i said. the lt1 t56s wer build by borg warner in germany. the ls1 t56s wer built by tremec in mexico

LS123

iTrader: (11)

Here is a side by side comparison so this could be put to rest. LT1 on the left and LS1 on the right. Just be aware, you cannot just replace the input shaft and midplate and call it a day. To do this swap CORRECTLY, you must check the end play on both the input/main shaft and the cluster shaft and shim it. Failing to do so could result in noise/premature failure.

thirdgengta350

iTrader: (4)

alright, thanks for the input guys i'll def continue to research everything i can about these. finding anyone to agree on the specifics is really hard lol but every opinon counts. p.s. thanks to the mods for putting this in the correct forum because i'm a dumb ***

85MikeTPI

iTrader: (9)

Someone may be munging information between the LT1 Y-body ZF 6-speeds and the LT1/LS1 F-body T56s.. But the information you've heard and posted is false..

ElkySS

iTrader: (6)

why do you say that? i dont have any experience with the ls1 t56s but i have seen the inside of mine and i can tell you my shift forks are iron. at least i know that much for a fact.

LS123

iTrader: (11)

First of all you are WRONG! Second, 85MikeTPI knows his S*%T about T56's! Have you really opened up a T56? If so you would know that there are 4 shift forks in there. What you saw were the 5-6 and the reverse forks. Go little deeper next time and you can repost what you saw here.

ElkySS

iTrader: (6)

i didnt say how far into the trans i got. so why are u assuming i only saw 5-6 and rev?

ElkySS

iTrader: (6)

im not saying i know everything about these transmissions. im just relaying info somone told me and speaking from what i have seen for myself.

stone4779

iTrader: (2)

Lol nice unintended pun haha