Transmissions and Drivetrain Need help with your trans? Problems with your axle?

Problems with Transgo shift kit (TH700) Any guru's out there?

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Old Sep 22, 2005 | 05:32 AM
  #1  
77CVT's Avatar
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Problems with Transgo shift kit (TH700) Any guru's out there?

Hi

I've just installed a shift kit in my th700 ('85) and now have a few problems. I have no first gear and it wont shift into 3rd unless I put it into OD (either that or it goes straight to 4th). I swear I triple checked everything and even watched the video 5-10 times.

Basicaly this is what I did:
-installed green spring into the PR valve (valve pushed up into the second snap ring groove. I also ground off the second "land" flush as per instructions. I also had a "b" sized boost valve which was ok to use.
-blocked hole B in the VBody
-drilled the hole through the partition & in the 3-2 valve drilled the hole through the passage and the other 1/2 way
-put the brown spring, spacer plate, long spring and shim into the TV valve
-brown spring in the 2nd accumulator valve
-red spring in the line bias valve
-white spring and new valve (supplied) i the 3-2 valve (where the 2 hole were drilled)
-3 check ***** in VB
-I left the 3-4 valve alone as it said change if 3.73 or deeper ratio
-plugged and enlarged the appropriate holes in the seperator plate (I made the 2nd gear shift hole (b) .093 as suggested for a firm shift)
-4 checkballs in sep plate
-plugged accumulator housing hole and 2 others in VB
-I had 2 sized accum springs (a short stiff and long softer spring) and put the small one above the sep plate
-reset the tv cable

I put it all together and .....not good! I had a small and a large checkball left over and found out the large one was for the TV (the other the hole was plugged in the sep plate)

I pulled it all apart (thank *** I put a drain plug in!) and installed the large c/ball and swapped the accum springs around (figuring the small stiff one made the 1-2 shift quicker).

Took it for a drive and same deal! Nothing like the video showed!

If anyone knows where I went wrong or can suggest something it would be extremely appreciated.

Cheers

Chris
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Old Sep 22, 2005 | 08:44 AM
  #2  
400Z28Racer's Avatar
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From: Usa
Car: 85 IROC-Z
Engine: magflatoVE
Transmission: T56
Axle/Gears: 9" 411
Nevermind
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Old Sep 22, 2005 | 11:54 AM
  #3  
87zjeff's Avatar
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From: louisville, ky
Axle/Gears: '01 3.42 10 bolt
do you have reverse? if you do, then you should have 1st. you might not have 2nd and od. in which case, you would have to put it in od to drop pressure enough to shift into 3rd. you need 1st to accelerate. the 2/4 band anchor prolly slipped down enough to release the band while you had the valve body off. when you put the valve body back on, it pushed it back up in but did not engage the band.
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Old Sep 22, 2005 | 12:37 PM
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From: Arizona
Car: 91 Camaro RS
Engine: 305 tbi
Transmission: 700R4
yep thats what i was going to say he just beat me to it
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Old Sep 22, 2005 | 09:15 PM
  #5  
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I have reverse. The car bogs slightly from a stand which tells me I don't have 1st (I can't do 60mph in 1st normally).

What's a 2/4 band anchor??
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Old Sep 22, 2005 | 09:43 PM
  #6  
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From: louisville, ky
Axle/Gears: '01 3.42 10 bolt
the 2/4 band anchor is a round piece that does in to the case under the valve body and seperator plate. it anchors the band in place. the band is probably jammed in the case acting like it has 2nd. reverse and first both use the input clutch and low clutch. reverse also uses a reverse drum and planetary. unless you messed up checkball location, i'm pretty sure you can't have reverse without having first.
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