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Discussion Starter #1
Engine: 4.2L split port with underdrive pulleys and CAI

Transmission: 4R70W with [email protected] 48 GVWR cooler

Differential: 8.8/4.10

Rear disk brakes.


Ground rules: I'm a non-technical newbie looking for informed opinion. I have a dead cat, need an occasional truck, would prefer an everyday car. Put a hidden hitch on it and I can pull a trailer when I need to haul a fridge or sheet rock and have a curiosity of a car at the same time.

Don't expect me to justify or defend any or the above. If all this sounds crazy, that comes from too much browsing on TCCOA.

What are the known/forseeable problems in making these work together? And if they do work together, would they yield desirable MPG and HP? I am not really interested in 1/4 times.

Any price quotes from the resident Specialist gurus?
 

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Discussion Starter #2
Can it be?

It seems that if it the object of mods is not ten something in the quarter, the venerable great minds of TCCOA dont care to comment on them?:confused: :eek: :(
 

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The rear end swap and disc brake swap, from what I've read, shouldn't be too overly difficult, but I've never taken the time to get a first hand look at that it would take.

The engine swap could be tricky, but there is the 4.2 swap article right in this section of the forums, that looks to pretty well explain the process. The major variable is your mechanical skill level
 

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Discussion Starter #5 (Edited)
Kelsey Smith said:
The engine swap could be tricky, but there is the 4.2 swap article right in this section of the forums, that looks to pretty well explain the process. The major variable is your mechanical skill level
I have read the the 4.2 swap article. The issues there are I would install the entire F150 engine, not the the mustang throtte body. Cowl hood? My car has an AOD tranny. installing a 4R70W.... computer issues? harness issues?

oh! I'm 58. used to be very handy with a spanner back when the major components under the hood (apart from the long block) were generator, distributor, carbuerettor (sp), and starting motor. But I figure I'm still a quick learner, hence the reason for this thread.
 

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Bump
 

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If your using the 3.8L N/A block, the 4.2 swap isn't that bad, the split port is easy. i had some minor issues but splitportbird was very helpful with that. the 4r70w should be what you have in your car now....so thats not a issue. the 8.8" swap with 410's disc. find a donor SC to get the rear end from and buy your gears....
 

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4.3Lcougar said:
...the 4r70w should be what you have in your car now....so thats not a issue...
A '92 3.8 will have an AOD from the factory. To use a 4R70W you would have to use an aftermarket transmission controller or change the electronics over from a '94 up 3.8. (Or better yet from a '99 up V6 Mustang.) I would suggest using the 4R70W internals in your AOD but rebuilding a transmission is not a do-it-yourself project for a "non-technical newbie". If you have the funds you could have someone else do that for you.
 

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Discussion Starter #9
4.3Lcougar said:
If your using the 3.8L N/A block, the 4.2 swap isn't that bad, the split port is easy. i had some minor issues but splitportbird was very helpful with that. the 4r70w should be what you have in your car now....so thats not a issue. the 8.8" swap with 410's disc. find a donor SC to get the rear end from and buy your gears..
My 3.8 shortblock would have to be rebuilt. (blown head gasket, antifreeze everywhere from air intake to oilpan). Just wanted to plop in the whole F150 4.2L split port with about 60,000. the 3.8 was close to 150. Do I understand you correctly, that the rear end setup can be had from a thunderbird SC? I've got some more re-reading to do on this. I have a lot of undigested informtion. Axles with 28 or 31 splines, trac-loc limited slip etc..

tinman_72 said:
A '92 3.8 will have an AOD from the factory. To use a 4R70W you would have to use an aftermarket transmission controller or change the electronics over from a '94 up 3.8. (Or better yet from a '99 up V6 Mustang.) I would suggest using the 4R70W internals in your AOD but rebuilding a transmission is not a do-it-yourself project for a "non-technical newbie". If you have the funds you could have someone else do that for you.
Thanks tinman. You have gotten to the type of information I am seeking, not that I fully understand it yet.

I do have the AOD (p r n od d 1) . I take it the transmission controller is different than, and separate from, the ECU.

When you say "electronics" are you referring to just a transmission controller? Or do you mean I should swap all the wire harnesses, sensors, and controllers from the 94 3.8 or 99 mustang?

About the 4R70W. I have no intention of reuilding a tranny, or the shortblock. I know my limitations. With a lot of 'how-to' books and technical manuals I guess I could do it, but I dont want to wait three years to complete this. That's why there is a request for quotes from the specialists in my opening post. I did not specify for what I needed quotes. I expected that to come out in the discussion. I'm talking about using the 4R because

1) the split port sticky states it bolts up to the 4.2L block and I can find no information on whether the 4.2L will bolt to the AOD
2) the impression I get from the posts is that the AOD isnot tough enough for my proposed use.

http://forums.tccoa.com/showthread.php?t=86458&highlight='specs+seem+good'

This thread discusses 4r gears in the AOD, and an ebay seller doing them for what some posters thought was an incredibly low price. Determining what this project would cost is also an objective of this thread.
 

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The AOD is fully hydraulic. It is not controlled by a computer at all. The transmission controller in the 4R equipped cars is built into the EEC so you can't just swap out the controller.
I would get a quote from Darrin. (Resident transmission guru.) I think I have read some threads that he does the 4R internals into AOD's. This would be the easiest way to go. No re-wiring, it will bolt right in, and I am sure he can build it to handle whatever you want to throw at it.
 

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Well if your gonna swap motors...... Go BIG!!







Ford SOHC 427!
 

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Discussion Starter #12
David_viny said:
Well if your gonna swap motors...... Go BIG!!

I'll consider that for my second project.
 

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Blackexperience,

I am planning to build up my 3.8 to a splitported 4.2. I have a 2000 mustang V6 intake, 97 F-150 heads, and will put in a 4.2 crank, pistons and rods. I'm in the fund raising/bart collection stage. I may start with just the heads, intakes, egr, etc. I have most of that and may have the money do so shortly.
 

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Discussion Starter #14
PCD said:
Blackexperience,

I am planning to build up my 3.8 to a splitported 4.2. I have a 2000 mustang V6 intake, 97 F-150 heads, and will put in a 4.2 crank, pistons and rods. I'm in the fund raising/bart collection stage. I may start with just the heads, intakes, egr, etc. I have most of that and may have the money do so shortly.

You're way ahead of me. I have:
the busted 3.8 which I dont want to rebuild,
an AOD tranny that slipped, and
a few dollars that i'm trying to stretch for

a 2001 f150 4.2L assembly that I'm considering buying,
tools including compressor, transmission jack, and engine stand.

I guess I'll watch your progress.
 

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Blackexperience,

Make sure you get the computers that go with that engine. The "happy, happy, joy, joy" is that all your accessories (A/C, alternator, Power Steering) will bolt to the 4.2 block (Actually same as the 3.8 block.) It is just that there are like 6 different computers that can run these engines. By having the whole F-150, if possible, handy is that you can pull parts, wiring harness, etc. off of the F-150 until your car runs.
 

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Blackexperience said:
Engine: 4.2L split port with underdrive pulleys and CAI

Transmission: 4R70W with [email protected] 48 GVWR cooler

Differential: 8.8/4.10

Rear disk brakes.


Its what I just built..

either buy a Bauman TCS controller for the trans or have the AOD built up with the 4R70W planetary set.
 

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Probibly the easiest thing for you to do is to take the 4.2L long block and put your stock 3.8L Heads, oilpan, oil pump pickup, intake/exhaust manifolds, distibutor, and engine accesory drive on it and call it a day.

Swaping a COMPLETE 4.2L and 4R70W into your car would be a very costly and time consumming affair. Even trying to use the complete 4.2L and bolting it to your AOD would be troublesome as you would need to use mustang splitport intakes OR have a huge hole in your hood and you would also need to rig up a cable to for controlling the transmission as all splitports came with computer controlled trannies.
 

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Discussion Starter #18 (Edited)
rancherlee said:
Probibly the easiest thing for you to do is to take the 4.2L long block and put your stock 3.8L Heads, oilpan, oil pump pickup, intake/exhaust manifolds, distibutor, and engine accesory drive on it and call it a day.

Swaping a COMPLETE 4.2L and 4R70W into your car would be a very costly and time consumming affair. Even trying to use the complete 4.2L and bolting it to your AOD would be troublesome as you would need to use mustang splitport intakes OR have a huge hole in your hood and you would also need to rig up a cable to for controlling the transmission as all splitports came with computer controlled trannies.
NOW this is a downer!!

So you're saying that I should machine the old 3.8s, remove the (presumably) good heads and everthing above them from the f150 4.2L engine, and put the 3.8s on the resulting shortblock? That deprives me of the splitport. Why buy the 4.2 then just buy a 3.8 shortblock. that's cheaper.

I read the splitport swap sticky. I'm ok with a hole in the hood. I'd prefer that to swapping heads or intakes. Are cowls no longer fashionable or available?

As to the transmission, are the transmissions on the F150s not versions of the 4R70W? If so why would there be a problem with the having a computer controlled transmission in this set up? Seems it's been done before.
SplitPortBird said:
Its what I just built..

either buy a Bauman TCS controller for the trans or have the AOD built up with the 4R70W planetary set.

There was a manual transmission coupled to this engine. It would seem then that there was no computer control of the transmission. I would think that there would be no problem with ECU control of an AOD which, according to tinman_72, is completely hydraulic and not computer controlled, if I used the truck's original ECU which is available to me..

Tranny Gurus!! any thoughts?
 

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You might be better off just sticking a SC motor and tranny in your Coug.
 

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PCD said:
You might be better off just sticking a SC motor and tranny in your Coug.
no he isn't!

I hate the SC motor, having owned one! I wouldn't wish one on anybody who didn't willingly get one.

Buy the truck 4.2L splitport! It looks badass as hell, and exotic!!

**** the hood, cut that thing apart and glue an rowboat onto it! ****, i don't care, just don't puss out and put crummy 3.8 heads on it! :(

Find something original to do with the hood, or be hotrod-tastic and just let it be exposed!

*I* would do it!

-Ghost
 
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