turbo 400 in a 2000 LS1
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TECH Regular
Joined: Mar 2005
Posts: 409
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turbo 400 in a 2000 LS1 got a 2000 Z28 and am looking at putting a TH400. whats all involved in doing that and is it worth it? will i have to change the spline? i might be able to buy a 375 transmission which i think is the same thing as a turbo 400 just with a spline that fits a 350... but i could really be off base here.
id really be gratefull in any insite on this.
id really be gratefull in any insite on this.
All yo uhave to do is pick up jsut any Th400 whether it be new or used and it will work fine like it is, jsut make sure it ahs the long tailshaft (9"). Then you have to buy the crossmember from BMR with the torque arm relocation so it gets any stress off the back of the tranny. You will need a dip stick, the stock drive shaft will work as long as you get the long tail shaft, if you get a short one you will have to get one made.. Gotta get a torque converter that will work with the LS1 flexplate but made for the Th400. You will need to get a VSS sensor from rossler so you can get your speedo to work.
I think thats bout it. maybe
I think thats bout it. maybe
11 Second Club
Joined: Oct 2005
Posts: 1,847
Likes: 1
From: Sandwich, IL
If you take the time to read through the sticky about TH400's then you should get all the info you need. It's 9 pages but has a ton of info on parts, part numbers, costs, ect.
https://ls1tech.com/forums/automatic-transmission/197642-what-would-you-like-see-addressed-th400-faq.html
https://ls1tech.com/forums/automatic-transmission/197642-what-would-you-like-see-addressed-th400-faq.html
Originally Posted by ohioz
so a th350/400 will bolt right up to an ls1 motor?
