Th 400 swap list

[Dillon Dollar]

I found a good deal on a 1500 hp lentech 4r70w but I was told that anything over 1000 hp these transmissions fail

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[Greg Hazlett]

What is your power goal?

 

[Dillon Dollar]

Max boost above 1200 wheel

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[Greg Hazlett]

That is a lot....track only car or street car as well? Not a lot of people can handle 600+ RWHP let alone 1200!

 

[Dillon Dollar]

Mainly street car I daily drive a 800 hp Shelby sometimes so I'm used to power for the most part

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[Sonicblue_s197]

That's pretty sweet man, I plan on ditching the F1A later down the road and goin with a custom twin turbo kit

 

[Dillon Dollar]

S an H performances can hook you up

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[Sonicblue_s197]

Their kit pretty good?

 

[Bobby]

You are about to find out from Dillon and me.

 

[Dillon Dollar]

Does anyone know if anyone has done a th 350 instead of a th400

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[DTL]

Bringing this thread back to life to see if anyone has an answer for the speedometer when switching to a th400. I've heard of the computer freaking out without a speedo signal and pulling power. Can this be turned off with tuning or is there a way to generate a usable speedometer signal??

 

[aleborjas]

If you are going th400 you should call atfspeed or rossler trans and for 4r70w fb performance or atf speed dont look anywhere else

 

[DTL]

I already have a transmission and I use Mike's out of Lancaster, CA.

 

[05stang]

I've been running without the speedometer for over a year and it doesn't affect the performance at all. It will give you an error message and CEL.

http://www.s197forum.com/forum/showthread.php?t=102413&highlight=th400+speedo

 

[DTL]

Thanks for the link. I think the 2011+ cars need to have the VSS signal or the computer freaks out.

 

[Bud]

Mine doesn't have a VSS signal and does fine now. The car was going into limp mode when we first got it together and tried to get on it though. Ken did some tweaks in the tune to fix it, not sure if it was related to no VSS or not.

Evolution Performance has a speedo working in their th400 swapped coyote I believe, might hit them up to see what they did to make it work if they are willing to share.

 

[Dillon Dollar]

Evolution Sells a kit for the swap

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[DTL]

All I see on their website is their crossmember. No mention of a complete kit. I'll try giving them a call on Monday and see what they say.

Bud: It's encouraging to hear that yours is running w/o a vss signal at all. Thanks!

 

[Bud]

I'd still like to have vss to be able log rpm vs mph for measuring converter slip. I have a cheap drive shaft sensor kit I was going to wire into the stock harness and see if we could tweak the holes setting into tune to make it read close to right. I may get back to trying to make it work someday....or just get a racepak for logging

 

[DTL]

If all else failed, I was wondering if a racepak DS speed sensor could double as a vss output?