What year trannies will fit 95 CS 3.1?

[ranbo108]

Hi all,

 

I've been watching this sight and just now have joined. I'm having fun finding a trans for my 95 CS 3.1 and trying to determine just which years will interchange. The few ebay auctions I've seen indicate 93-95 mostly and it seems there all far far away from the Baltimore area. Any hot tips for a fairly savvy mechanic would sure be appreciated.

 

Cheers, Randy

 

PS, Any ThunderMax (Harley) users feel free to ask me a question; I do tech support for Zippers Cycles.

[ns87]

What you want to look for is a 4T60-e transmission. I think 95 and up had slight wiring changes. But I'm not really sure. Von Kaiser should chime in. He knows all about this stuff

[19Cutlass94]

The only thing different between OBD1 and OBDII 4T60-E's were ther neutral saftey switches.

[3.1cutlass]

There are 6 different 4T60-E's. You can use one from a 1994-1996 3100 or 3.4 DOHC. The 1991-1993 4T60-E will not work and neither will one from a caddy.

[Crazy K]

There are 6 different 4T60-E's. You can use one from a 1994-1996 3100 or 3.4 DOHC. The 1991-1993 4T60-E will not work and neither will one from a caddy.

I disagree. I would not stick a 3.4 dohc tranny behind a 3.1, as it has a different gear ratio.

you should look for a 94 or 95 3100 powered CS, regal, lumina, or GP for Exact swapping. anything else may present compatibility issues.

 

 

I need to determine what is different between a 94-95 dohc and 91-93 dohc trannys myself.

[3.1cutlass]

There are 6 different 4T60-E's. You can use one from a 1994-1996 3100 or 3.4 DOHC. The 1991-1993 4T60-E will not work and neither will one from a caddy.

I disagree. I would not stick a 3.4 dohc tranny behind a 3.1, as it has a different gear ratio.

you should look for a 94 or 95 3100 powered CS, regal, lumina, or GP for Exact swapping. anything else may present compatibility issues.

 

 

I need to determine what is different between a 94-95 dohc and 91-93 dohc trannys myself.

The FDR of the 3100 is 3.33:1 and the 3.4is 3.43:1. Not a huge difference.

[Crazy K]

There are 6 different 4T60-E's. You can use one from a 1994-1996 3100 or 3.4 DOHC. The 1991-1993 4T60-E will not work and neither will one from a caddy.

I disagree. I would not stick a 3.4 dohc tranny behind a 3.1, as it has a different gear ratio.

you should look for a 94 or 95 3100 powered CS, regal, lumina, or GP for Exact swapping. anything else may present compatibility issues.

 

 

I need to determine what is different between a 94-95 dohc and 91-93 dohc trannys myself.

The FDR of the 3100 is 3.33:1 and the 3.4is 3.43:1. Not a huge difference.

not hugh... but enough that it could cause problems. I would like to try a 3.33 fdr behind a dohc... and see if it is more fuel efficient... if it doesn't get stuck in failsafe limp mode.

[19Cutlass94]

Any differences is FDR WILL cause a problem with the computer. You have to use one with the same gearing. Therefore if you have a 3100 motor, get a tranny from a 3100. NOT a DOHC.