Compatible 700R4 Tranny
Thread Starter
Instructor
Joined: May 2006
Posts: 211
Likes: 4
From: Taunton MA
Compatible 700R4 Tranny
I was told by someone who has worked on both Firebirds and Corvettes that the 700R4 in a 91 Firebird would work in my 84 Vette. All that is required is changing out the tail extension and the servos.
Is this a a true state, can I use a 700R4 for Firebirds and Camaros?
Thanks,
Is this a a true state, can I use a 700R4 for Firebirds and Camaros?
Thanks,
Race Director
Joined: Jun 1999
Posts: 14,924
Likes: 9
From: Merritt Ils Fl
Always the wise move but I am running an 89 TA transmission in my 85. I didn't have to change the output shaft either, only the tailstock. Do not know why. I should add the innards were upgraded with a B&M Master kit. Don't recall what that did to the servos exactly.
Team Owner
Joined: Jul 2004
Posts: 28,459
Likes: 3,288
From: Hartford WI
You didn't change the output shaft but it is definitely different in length from what I saw when it came out.
Safety Car
Joined: Jan 2004
Posts: 3,556
Likes: 13
Same here;
output shaft stuck out further with C4 housing but still had plenty of freeplay on yoke without bottoming out.Some have had to trim shaft to get correct yoke clearance
Last edited by vetteoz; Apr 22, 2010 at 08:32 PM.
Team Owner
Joined: Jul 2004
Posts: 28,459
Likes: 3,288
From: Hartford WI
I did just that and swapped the tailhousing when I transplanted it. Somehow the tailhousing came loose from the driveshaft vibration or something to that effect. Bottom line is they blamed the output shaft being too long and it wasn't even under warranty so I doubt they would try to shaft me.
Race Director
Joined: Feb 2004
Posts: 12,518
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I did just that and swapped the tailhousing when I transplanted it. Somehow the tailhousing came loose from the driveshaft vibration or something to that effect. Bottom line is they blamed the output shaft being too long and it wasn't even under warranty so I doubt they would try to shaft me.
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Team Owner
Joined: Jul 2004
Posts: 28,459
Likes: 3,288
From: Hartford WI
Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
Did you torque em to 24 ft lbs? If you did, it was a fluke. My problem with not cutting the driveshaft on those conversions was that the yoke bottomed out before I could get the driveshaft into the rear end yoke.
From the factory they were approx 3/4 shorter on the vette. I say approx because the factory took a stock 2wd talhousing and cut about 3/4 off. The vette tailhousing started life as a 2wd car or truck output shaft. I chop them off so nice, that people can't tell I did it. I even duplicate the factory chamfer.
From the factory they were approx 3/4 shorter on the vette. I say approx because the factory took a stock 2wd talhousing and cut about 3/4 off. The vette tailhousing started life as a 2wd car or truck output shaft. I chop them off so nice, that people can't tell I did it. I even duplicate the factory chamfer.
Le Mans Master
Joined: Aug 1999
Posts: 7,339
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From: WilkesBarre PA
I ripped mine out.
Race Director
Joined: Jun 1999
Posts: 14,924
Likes: 9
From: Merritt Ils Fl
