5 spd Auto Trans?
Thread Starter
Instructor
Joined: Jan 2006
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5 spd Auto Trans?
Do we have any options as far as swapping any sort of 5 speed auto into an lt1 vette? I'd love to be able to have a built 5 spd, too much room between the 2nd and 3rd gear shiftpoints in my 4 spd.
Team Owner
Joined: Aug 2000
Posts: 40,156
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From: San Pedro CA
I don't think any exist that will fit our car.
The only A5 I can think of is the one used in the latest RWD caddies... but I have no idea if those can be adapted.
The 4L60E and 4L65E was used in all sorts of high-torque GM rear drive cars, Corvette (up until recently), F-Bodies and GTO. Trucks used the 4L80E.
The latest vette uses a 6spd auto, but with the rear mounted transmission, I have no faith it would ever fit.
The only A5 I can think of is the one used in the latest RWD caddies... but I have no idea if those can be adapted.
The 4L60E and 4L65E was used in all sorts of high-torque GM rear drive cars, Corvette (up until recently), F-Bodies and GTO. Trucks used the 4L80E.
The latest vette uses a 6spd auto, but with the rear mounted transmission, I have no faith it would ever fit.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
they get away with it because of torque...
what rear gear do you have? It sounds like you have 2.59s, you might consider something taller than say, 3.45.
Or, upgrading to a D44 with 3.45s in it.
what rear gear do you have? It sounds like you have 2.59s, you might consider something taller than say, 3.45.
Or, upgrading to a D44 with 3.45s in it.
Race Director
Joined: Feb 2004
Posts: 12,518
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I have not found the rumored gearset. I heard that a shop in the Bronx, New york has them for sale. I have not located them though. If I find a set, I will buy them and install them for r&d purposes. If anyone else knows how to get them, please post.
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Race Director
Joined: Sep 2000
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From: The Top of Utah
If it any clue, the lower (alternate) gear ratios for the TH400 were intended for a TH475 for trucks. Maybe there is some sort of a parallel situation for the 700R4. Of course, there always is the 200R4. It has a higher first gear and consequently, closer splits between the gears.
RACE ON!!!
RACE ON!!!
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From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
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I have a 5 speed auto in my Power Wagon(actually I'm told it's really a six speed with two second gears, how that happened I don't know).
Safety Car
Joined: Apr 2001
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From: Houston TX
Originally Posted by bogus
how easy is it to adapt a 200R4 into a C4? I have no recollection of someone doing this.
Aaron
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From: SCMR Rat Pack'r Charter Member..Great Bend KS
Originally Posted by Mr Mojo
(actually I'm told it's really a six speed with two second gears, how that happened I don't know).
Larry
code5coupe