4.9 caddy. is a 91 caddy 4t60 transmission a "direct swap" to where a th125 was ? (besides the vacuum line needed for the modulator?) Mounts ?? Axles??

Axles and mounts are different.
Vacuum port for the modulator is on the 4.9 throttle body.
You may or may not have to put a relay on the TCC brake switch to make the TC operate correctly.

The 4T60E is perfect for the 4.9 - and about the same amount of work as the 4T60.......

[This message has been edited by olejoedad (edited 09-17-2021).]

there will be NO COMPUTER

You will need an early model 440t4 or 4t60 governor cap for the speedometer to work. That part is the hardest to find.

Caution with a Caddy transmission count the number of pins on the plug if it is 5 you are good if it is 7 it will not work.

[This message has been edited by 1Packrat (edited 09-17-2021).]

wouldn't a 7 pin be a 4t60E ?

quote Originally posted by Collector: 4.9 caddy. is a 91 caddy 4t60 transmission a "direct swap" to where a th125 was ? (besides the vacuum line needed for the modulator?) Mounts ?? Axles??

I was not aware that a 91 Caddy was even available with a regular 4T60. I thought they were all 4T60E (or F7, in the case of the Allante.)

could be mistaken on the year of the trans. 4t60 no "E"

Gotcha. Might be an 89 or 90.
FWIW, I think the 3.4 DOHC also came with a 4T60, at least several years into the '90s. Came with an overall FDR of 3.42, IIRC. Not that that would be useful, in your case, if you're sure it was sourced from a Caddy.

[This message has been edited by Raydar (edited 09-17-2021).]

trans was bought as a Brand New Trans in the Orig Plastic Case from GM. by the owner of the car. I have not yet even SEEN It. Thanks

You might find these helpful.

Is this Lou6t4gto with a new nickname?

yes, could not get my orig "sign in" to work anymore

quote Originally posted by Collector: there will be NO COMPUTER

Without an ECM, you will need to install a switch for the torque converter lock up solenoid to energize. Not the most convenient solution as you will need to switch it off every time the car is stopped with the engine still running or at low RPM use.

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I have a 700r in my camaro, (any way it is the same setup ? as far as the tq conv ? i wire from the pressure switch to a toggle switch . with the switch ON it Only locks up in 4th Gear, it's not in 4th gear at a light. is the 4t60 not like that ??