1985-1998 [Subscribe to Daily Digest] |
Here is the trans bit as it was told to me by someone who s very knowledgeable.
Here's the transmission history:
Version 1:
GMT5301, GMT5401
'86-'87 2.0 turbo, no ABS
4.05:1 final drive with bushings behind spider gears
Engine-oil dipstick is notched and used to measure tranny oil level through
the fill hole.
Small inner driver.
Version 2:
GM75401, GM75301, GM75402
'88-'90 2.0 turbo ABS
4.05:1 final drive with bushings behind spider gears
Fill hole is moved to the front of the tranny case because the early rear
fill hole would be nearly impossible to get to with the ABS brake system
right above it. '88 has a cap bolt with dipstick attached to it, '89-'90
have a proper dipstick and tube.
Small inner driver.
Version 3:
GM75403
'91-'92 2.3 turbo, ABS (ABS/TC in '92)
4.05:1 final drive with bushings behind spider gears
Front dipstick for level checking and filling.
The earlier rear fill hole was not drilled anymore because it's
near-impossible to get to with the ABS brake system right above it.
Large inner driver.
Version 4:
GM75701
'93 CST, CSET and Aero
3.61:1 final drive with *needle bearings* behind spider gears
Front dipstick for level checking and filling.
Large inner driver.
Version 5:
FM751xx
'94 CST, CSET and Aero
3.61:1 final drive with *needle bearings* behind spider gears
Reverse-gear synchro, and revised synchro and selector function throughout.
Fill plug, level plug, drain plug, no dipstick.
Large inner driver.
Version 6:
FM751xx
'95-'98 CSET and Aero
3.61:1 final drive with bushings behind spider gears
Reverse-gear synchro, and revised synchro and selector function throughout.
Fill plug, level plug, drain plug, no dipstick.
Large inner driver.
Version 7:
FM750xx
'95-'97 CS LPT
3.61:1 final drive with bushings behind spider gears
Reverse-gear synchro, and revised synchro and selector function throughout.
Fill plug, level plug, drain plug, no dipstick.
Small inner driver.
Versions 5 though 7 may bolt right in. I haven't done it so I'm not sure,
but I believe Justin VanAmbrahms has done it in his '88 9kT. Improved gear selection feel, better synchros, and a reverse synchro are all benefits. These versions all have the tall final drive, and watch out for the small inner driver on version 7.
The following trannies are from non-turbo cars, and have the super-short
4.45:1 final drive, and should give a 9kT the power to climb trees:
GMT5202, GMT5203 ('87 9000S)
GM65101, GM65102 ('88-'90 9000S)
GM65103 ('90 9000S 2.0 and 2.3, '91-'92 9000S, '93 CS/CSE non-turbo)
FM510xx ('94 CS/CSE non-turbo)
posted by 24.97.15...
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