did you tell your TH400 you upped the power?
03-10-2004, 09:36 AM
#1
Race Director
Thread Starter
did you tell your TH400 you upped the power?
my 72 was 200hp stock. now it is ~385.
Now that it makes 200hp near 1/2 throttle, i moved the WOT downshift switch to 1/2 throtte. :cool:
Now that it makes 200hp near 1/2 throttle, i moved the WOT downshift switch to 1/2 throtte. :cool:
03-10-2004, 10:01 AM
#2
Le Mans Master
Member Since: Mar 2002
Location: Coming home from Luckenbach Texas
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Re: did you tell your TH400 you upped the power? (Matt Gruber)
Interesting! Think I'll grab some :lurk: and sit back -- see what others have to say about doing this...
03-10-2004, 12:28 PM
#3
Tech Contributor
Re: did you tell your TH400 you upped the power? (Matt Gruber)
Matt, I have the same tranny apart now to rebuild it. In stock form I was told it handle 400hp without a problem. One of the mods I going to make is to install an early direct clutch hub and 34 element sprag. The auto tranny racers sadi this is the weak point in a TH400.
I would think if your trannyis is in decent shape you'll be ok.
Gary
I would think if your trannyis is in decent shape you'll be ok.
Gary
03-11-2004, 09:32 AM
#4
Race Director
Thread Starter
Re: did you tell your TH400 you upped the power? (Matt Gruber)
this changes the personality.
i.e.
i can pass without having to floor it(to get the right gear) :party:
i.e.
i can pass without having to floor it(to get the right gear) :party:
03-11-2004, 09:45 AM
#5
Race Director
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Location: San Diego - Deep Within The State of CONFUSION!
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Re: did you tell your TH400 you upped the power? (Matt Gruber)
Actually that 400 number was GM's torque designation not the HP ... the Turbo 350 was rated at 350 foot pounds of torque and the Turbo 400 was ... ahh you know the rest!
:steering:
:steering:
03-11-2004, 10:21 AM
#6
Le Mans Master
Re: did you tell your TH400 you upped the power? (SanDiegoPaul)
I would belive that for a TH200, but what happened to the 700R4? It won't take 700 ft-lbs in anywhere close to stock form will it? Must have changed this nomenclature in the 80s.
