Th400 on LT1...
Thread Starter
TECH Regular
Joined: Dec 2004
Posts: 417
Likes: 1
Th400 on LT1... Ok so i know this has been talked about many times but i need it just one more time... Were building a 383 LT1 and was thinking about upgrading the trany to a th350 or th400.. im not sure what is all needed cause we are going to run a manuel valve body so i dont need the kick down cable, but what else will be needed, i know i only use 5 out of six bolts... is there a custom drive shaft that is needed or will the stock one work??? thanks again...
You will need all six bolts if its going on an LT1. The LS1 only uses 5.
I used BMRs conversion crossmember that relocates the TA mount.
Your going to have to figure out how to hook up your speedo. Mine came with a VSS already installed in the tailshaft, true plug and play.
Your driveshaft will have to be custom made.
Any other questions shoot me a PM and I will help as best I can.
I used BMRs conversion crossmember that relocates the TA mount.
Your going to have to figure out how to hook up your speedo. Mine came with a VSS already installed in the tailshaft, true plug and play.
Your driveshaft will have to be custom made.
Any other questions shoot me a PM and I will help as best I can.
TECH Enthusiast
Joined: Sep 2003
Posts: 501
Likes: 0
From: bethel PA
eather way you will need a new drive shaft, the yoke size is diffrent, you will need a 4 inch short tail shaft to run the BMR conversion crossmember, I got my sensor right from GM its off a early 90s GM truck.
you dont need a driveshaft if you go th350 instead of 400 (its the right length.. so i have been told by many)... and jsut need the tranny mount... torque arm (that dont mount on the trans)... uhh.. tranny dip stick.. its really a pretty strait swap.
Trending Topics
Or if you ordered a TH400 from us you could get it as a TH375 and it would use the 350 yoke but you would still have to shorten the drive shaft
__________________
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
