what do i need for 400
01-10-2009, 04:54 PM
#1
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what do i need for 400 i just bought a 400 trans. and need to know what flex plate, do ineed. or are there any other pieces i need to buy to make this work thanks. it's going on a 99 ls1
01-10-2009, 05:33 PM
#2
If you do the old torque converter route, you will need a crank adapter (Hughes performance makes this) to engage the pilot on the torque converter and help center it. The TCI flexplate comes with one, but it looks like a toy compared to the Hughes one.
Torque converter- you can get one special made w/ a longer pilot, tell whatever company that you are useing a th400 and an LS1. But for me, A ton of people have old style th400 converters and it will be easier to sell if needed.
-Need a custom size drive shaft
-to get speedo working, there are some posts to wire it for free, otherwise, you need to buy the correct wheel and a few other things.
-Custom crossmember- a few sponsers make them. Or save money and purchase a stock M6 one, and all you need is a stock tranny mount, and a 1 inch shim to raise the tail to the correct level. (for 4 inch th400 tails )
-Dipstick tube- Madman Racing sells them for th400 into f-body swaps
-Might as well get a trans temp guage
-Save $$ and get a deep pan from a junk yard th400. Just get the bolt and sleeve that hold the filter, and the plastic tube.
I can't think of anything else. I am in the process of doing the same thing. just need to order a dipstick tube, torque converter, and custom driveshaft. But the driveshaft will wait till spring when I mount everything and I pull it from hibernation. I'm sure others will chime in with something that I missed..
