Best tranny?
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Teching In
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Best tranny? I am new to this site and was looking for a little info. on a tranny for my 99 Trans Am. I am looking for something that will hold up. Already gone through the 4L60E and it has a TH350 in it now but not working properly. I think that it was not built properly. Looking to possibly go with a TH400 but not sure if it will still be streetable. I run at the track on weekends but also still want it to be a street car. Here is a list of what I am working with.
Lunati 382
Lunati 382
Thread Starter
Teching In
Joined: Mar 2004
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Originally Posted by CHECKERS03
I am new to this site and was looking for a little info. on a tranny for my 99 Trans Am. I am looking for something that will hold up. Already gone through the 4L60E and it has a TH350 in it now but not working properly. I think that it was not built properly. Looking to possibly go with a TH400 but not sure if it will still be streetable. I run at the track on weekends but also still want it to be a street car. Here is a list of what I am working with.
Lunati 382
Lunati 382
Lunati 382
comp cam 230-236 593-602 114
West Coast Performance Stage 3 Heads
TNT wet kit (set at 175)
Around 450-475 RWHP on motor.
Thread Starter
Teching In
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Originally Posted by CHECKERS03
Got cut off some how.
Lunati 382
comp cam 230-236 593-602 114
West Coast Performance Stage 3 Heads
TNT wet kit (set at 175)
Around 450-475 RWHP on motor.
Lunati 382
comp cam 230-236 593-602 114
West Coast Performance Stage 3 Heads
TNT wet kit (set at 175)
Around 450-475 RWHP on motor.
Any body got any suggestions?
Originally Posted by CHECKERS03
Any body got any suggestions?
Thread Starter
Teching In
Joined: Mar 2004
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Originally Posted by Gary98Z
You might want to try Rossler. Rossler does the 4l60e's for Lingenfelter LS1 427 twin turbo vettes. His tranny's are very pricey though.
Launching!
Joined: Aug 2003
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From: Ashburn, VA
Originally Posted by CHECKERS03
Thanks I have been looking into the TH400, just not real sure about streetability.
Is your 350 full manual? If so...a 400 should be about the same...
Thread Starter
Teching In
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Originally Posted by z28hokie
Well, youre TH350 and a TH400 are very similiar. The TH400 is basically just a heavier duty/beafier trans. Neither is lockup or has overdrive...
Is your 350 full manual? If so...a 400 should be about the same...
Is your 350 full manual? If so...a 400 should be about the same...
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Launching!
Joined: Aug 2003
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From: Ashburn, VA
Trans Brake really puts some strain on the trans when released...
But if it's well built, that doesnt matter- just many rebuilders use a few different/better components in trans brake applications (that dont really matter in a normal application).
But if it's well built, that doesnt matter- just many rebuilders use a few different/better components in trans brake applications (that dont really matter in a normal application).
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TH400 and 4L80E are pretty near the same size/weight
and same need for sledgehammer bodywork in the tunnel,
right? Might want to get the OD and adapt it up so the
PCM can run it? A crate GM 4L80E might (?) even have
a warranty, and I think there are a couple of places that
have adapt-'em-up wiring kits. Something to look into,
if you're dead set on beefy.
and same need for sledgehammer bodywork in the tunnel,
right? Might want to get the OD and adapt it up so the
PCM can run it? A crate GM 4L80E might (?) even have
a warranty, and I think there are a couple of places that
have adapt-'em-up wiring kits. Something to look into,
if you're dead set on beefy.
TECH Regular
Joined: Feb 2004
Posts: 439
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From: burbank ca
th400
Originally Posted by CHECKERS03
With th e TH400 does anybody no if I need the short or long tale houseing for the stock drive shaft to work. 99 trans am LS1.
LS1TECH Sponsor
Joined: Nov 2001
Posts: 363
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From: Naperville, IL
Check out the transmission section of our website. Give us a call.
click here for FLP transmission information
click here for FLP transmission information
Launching!
Joined: Aug 2003
Posts: 272
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From: Ashburn, VA
Originally Posted by CHECKERS03
Going with the TH400 tranny, now I need a good shifter. Any suggestions or pics of shifter installed?
Also- getting the trans with a reverse pattern valve body (where you pull back to shift) is nice, need to make sure your shifter matches this.
Launching!
Joined: Aug 2003
Posts: 272
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From: Ashburn, VA
Originally Posted by jimmyblue
TH400 and 4L80E are pretty near the same size/weight
and same need for sledgehammer bodywork in the tunnel,
right? Might want to get the OD and adapt it up so the
PCM can run it? A crate GM 4L80E might (?) even have
a warranty, and I think there are a couple of places that
have adapt-'em-up wiring kits. Something to look into,
if you're dead set on beefy.
and same need for sledgehammer bodywork in the tunnel,
right? Might want to get the OD and adapt it up so the
PCM can run it? A crate GM 4L80E might (?) even have
a warranty, and I think there are a couple of places that
have adapt-'em-up wiring kits. Something to look into,
if you're dead set on beefy.
As for the actual trans, I've heard good things about this shop:
http://www.ckperformance.com/select.html
Also heard great things about FLP, TCI, Hughes, and ATI.
TECH Fanatic
Joined: Mar 2002
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https://ls1tech.com/forums/showthread.php?t=159015
If you hurry, this just might take care of everything you need.
SC-
If you hurry, this just might take care of everything you need.
SC-