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Old 11-03-2014, 06:03 PM   #1
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Question 4T60 F7 version

Hello, I just joined this forum. I "was" planning to do a tranny swap on a Pontiac Fiero, I found a known good low miles 4T60 1991 Cadillac Allante F7 version, a rare transaxle, the problem is controlling this non electronic transmission with a modulator and kick down cable but... it also has shift solenoids. Could the valve body be swapped ? The F7 has stronger internals, 3.21 ratio

I don't want an electronic transaxle, could these internals be swapped into a regular 4T60 case ? Hybrid. Any idea'* or suggestions or possibilities, would be helpful. Thnx

Last edited by rourke_r; 11-03-2014 at 06:06 PM. Reason: Year of trans
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Old 11-04-2014, 12:29 AM   #2
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Are you sure it has shift solonoides? From the reasearch I did the 440/4t60 are not electronic if it has a kick down and vaccum accumumilator, looks like the Allante had a early verson of traction control and had solonoides on the foward band accumulator to (unhook) power to the wheels when actavated.
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Old 11-04-2014, 01:55 PM   #3
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Here is a link to my other forum with pics of the trans schematics, the trans model is 1KZH. I posted pics of the tag. Having difficulty getting this sorted because nobody seems to know much about this trans.

1991 Allante 4T60, looking for TCC wiring diagram - Pennock'* Fiero Forum
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Old 11-04-2014, 02:07 PM   #4
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Another thread discussing this trans, towards the bottom.

Pennock'* Fiero Forum - best year/car to get 4t60 out of? (by DanGT)
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Old 11-04-2014, 02:46 PM   #5
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This is where I miss working for the dealer. The Cadillac dealer I used to work for had a pretty big library of the factory service manuals dating back to the 60'*. I'm sure they had the complete service manual for the Allante. Without tearing down the transmission and comparing it to a standard 4t60 I doubt your going to find someone who knows for sure the differences between them. I'm thinking you would be better finding a transmission from a 91-92 deville and if you want the 3.21 final drive pull the guts from the Allante trans and stuff them into the standard 4t60.
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Old 11-04-2014, 03:34 PM   #6
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The Allante traction control is only on first and second gear, I understand that traction control would not usually be associated with a 4T60. I was only going to do a simple tranny swap and I'm still kinda pondering what would be possible before I come to a decision.
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