I bought an 4.5L engine/F-7 transaxle setup along all the wiring and computers from a 1989 Cadillac Allante. The engine is good but the transmission is bad. I took the pan off the transmission and there was a lot of clutch material and some broken off metal parts in the pan. My question is can I hook this engine to a 440-T4 transmission and just use a TV cable and just forget about the electronic shift that the previous transmission used. I understand that the F-7 has some shift solenoids that can no longer be found.

Or the second option is rebuilding the F-7. Apart from the shift solenoids, what’s the difference between this transmission and the 440-T4. I hate to tear it apart and find out that I can’t buy any hard parts for it.

most GM FWD tranies and FWD motors will bolt up to each other
excp Q4 motors
440 is a little weak for a caddy V8 but will work
for how long is the question
t60 or t65 would be a better/stronger choise for a torkie V8
avoid the "E" shifting trans if you want a cable shift
but your caddy's chip will work with them if wired up right

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Question wonder and be wierd
are you kind?

The '89 F7 is part 4T60, part 4T60E. I suspect you might have trouble finding some parts for it. The 4T60 or 4T60E will work fine.

quote 440 is a little weak for a caddy V8 but will work for how long is the question

440T4 = 4T60. It was used with the Cadillac V8s from 87-90 and I don't think there were any major issues.

Edahall,

Excellent choice of engine...!

The use of the 440T4 behind a 4.9 using the Allante intake has already been done successfully by Tom Hill and Greg Duncan of Team Python. They both monitor the Cadero forum. You might contact them there for questions and guidance.
http://autos.groups.yahoo.com/group/CaderoOwnersForum/

I am currently trying to determine an accurate answer to your second question of mounting a 4T60E behind a 92 Allante engine.

I have been discussing this combination with Jon Lagler because the 4T60E has stronger final drive differential than the 4T60 / 440T4 transmission and it allows a quick replacement of the final drive assembly that the 4T60/ 440T4 does not allow without complete transmission disassembly.

Here is what I can share about the F7 trans...
I had been under the mistaken impression that the F7 trans used with the
Allante was nothing more than a beefed up 440T4 / 4T60...which, as it turns
out, is only partially true.
Since the 89-92 F7 is VERY rare, critical replacement parts from aftermarket and GM sources are no longer available. So rebuilding is not going to be possible unless you stumble on a cache of NOS parts. This leaves the 4T60 or the more desireable 4T60E.

As it turns, out there are (2) different F7 trans. The first one
was used only on the Allante 4.1 engines up through 1988. As best I can tell
this trans was nothing more than a beefed up 440T4 with a 2.95 final
drive.( This perhaps is how the assumption that the F7 was just a beefed up 440T4 started.)

However, there is a SECOND F7 trans that was introduced in 1989 and found
only on the 4.5 Allante motors through 1992. This is the trans you have and this trans IS definitely
different..! It shares features of BOTH the 4T60 and the 4T60E but has a
3.21 Final drive ratio found only on the 4.5 Allante.

This trans is very interesting in that it has three electric solenoids like
a 4T60E , which has a forth additional solenoid for the VCC Pulse Width
Modulation (PWM)
(1) for the 2-3 shift ( same as an A solenoid on a 4T60E)
(1) for the 3-4 shift ( same as a B solenoid " " " )
(1) for the VCC. ( same as a 4T60E)
However, it still has the TV cable found on the 4T60.
But, the aluminum case of the late F7 is like a 4T60 without the removable
differential housing of the 4T60E at the right rear.
The F7 transmission internals appear to be a transition model that incorporated most of the features of
the 4T60E except VCC PWM.

The PCM Inputs on the Allante F7 vs a 4.9 4T60E are the following:

Allante F7: TV TPS MAP VSS Eng. Coolant Temp Cruise ON/OFF
EST (Eng. Speed) Brake Switch Neutral Start

4.9 4T60E: TPS MAP VSS Eng. Coolant Temp Cruise ON/OFF
EST Brake Switch PRNDL switch

PCM Outputs are:

Allante F7: 2-3 shift solenoid 3-4 shift solenoid VCC solenoid
(Note : no trouble codes for either shift solenoid. E039 for VCC fault)

4.9 4T60E: A solenoid B solenoid VCC apply solenoid
VCC pulse width modulation solenoid

Unless the Allante code in the memcal is dramatically different, it would
initially appear that using the 4T60E on an Allante may be easier than first thought.

Hopefully Jon can make a determination after comparing the Allante memcal to the 4.9 code.

Ray b,

You made a definitive statement that the Allante chip "will work with them if wired up right"...
Is that a statement based on your firsthand experience...or just an opinion?
If you have personal experience mating a 89-92 Allante memcal to a 4T60 or 4T60E, please share your knowledge with the rest of us.
There were no fewer than (13) Allante memcals used by GM from 89-92. If anyone has had success in mating the Allante engine to 4T60E, knowing the memcal code used would be very helpful.

Kerry

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Bodges...?
BODGES...???
We don gat to show yu no stinkin BODGES...!!!

[This message has been edited by Kerry (edited 02-03-2004).]