FMX to 4r70w swap

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Robsweden

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Hi

Im just getting ready to do the swap, here is some Pictures for now. 4r70w is from a 98v6 mustang. Ive rebuiltit my self. All new solenids, bearings ,cluthes, hardend stubshaft ,Trans go shiftkit pretty much Everything is new inside. 4 intermedia cluthes instead of 3 that came in 98. 

Il be running a Quick 4 to Control it. Torque converter is stock but modified. Higher stall, reinforcment and needle bearing. More info about the swap later :)



Stock this clutch came with 5 frictions in the v6 , just change pressure plate to a thinner one and one more friction and you have the same as the v8 4r70w.



Upgraded stock converter to 2300 stall, needle bearing and reinforced wings.





Valvebody with transgo shiftkit installed



I also installed the lever for the BM megashifter, so no more fabrication as I did to the FMX.

FMX is out and already sold :)





www grattis se

 
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Looking good. You will like the quick shift with the valve kit . Have a B&M Quick Silver with C6 and shift kit. The only way to drive when you have the need for speed.

 
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Have the c6 in same "exploded" state atm.

These things a real puzzles ain't they :)

Overdrive behind a healthy 351 must be awesome. Waiting for my 93 t-bird to first die to get the AOD onto the 73.

 
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Wow! That is very impressive that you are doing this yourself! I have watched a lot of videos on the rebuild process for a C4 and doing a rebuild on any automatic  is not for the faint of heart! Switching to an AOD is on my wish list. Is there enough room for the new trans in the tunnel? are there mods that need to be done?  Some information I have read says it bolts right in and others say it requires mods. Great Job!

 

Robsweden

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Hi Guys and thanks.

I think its gonna  slide in without any problems, Ive read about cutting away tabs on the case. Will see if that is needed. I have the AOD Crossmember also, and Il have to shorten the driveshaft 1,5-2 inches. Now Im waiting for my new headers to come back from Coating. I Went with the Hooker 6915 :)

More info will come , If anyone is interested I can list the mods done in the 4r70w.

Regards Rob

 
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Robsweden

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Awesome Rob

[ If anyone is interested I can list the mods done in the 4r70w.]

I am!!

[il have to shorten the driveshaft 1,5-2 inches.]

Where will you let it be balanced?
Thanks Fabrice :)

It will be balanced in a custom shop in Stockholm that only deals with this kind off stuff. Driveshaft etc

 

wrobinson

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My 13 year old wants to build a 1971-73 Mach 1 Mustang for his first car. We have found a Grabber Blue with white interior base model 1971 Mach 1 to start on.
Hi Guys and thanks.

I think its gonna  slide in without any problems, Ive read about cutting away tabs on the case. Will see if that is needed. I have the AOD Crossmember also, and Il have to shorten the driveshaft 1,5-2 inches. Now Im waiting for my new headers to come back from Coating. I Went with the Hooker 6915 :)

More info will come , If anyone is interested I can list the mods done in the 4r70w.

Regards Rob
Robsweden,

I am very interested in knowing the mods done to the 4R70W. Please let me know how the headers fit with the AODE transmission. I am in the process of completing the same swap on my son's 1973 Mach 1. Thank you in advance.

 

Robsweden

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Hi Guys and thanks.

I think its gonna  slide in without any problems, Ive read about cutting away tabs on the case. Will see if that is needed. I have the AOD Crossmember also, and Il have to shorten the driveshaft 1,5-2 inches. Now Im waiting for my new headers to come back from Coating. I Went with the Hooker 6915 :)

More info will come , If anyone is interested I can list the mods done in the 4r70w.

Regards Rob
Robsweden,

I am very interested in knowing the mods done to the 4R70W. Please let me know how the headers fit with the AODE transmission. I am in the process of completing the same swap on my son's 1973 Mach 1. Thank you in advance.

Hi

Im using the Hooker 6915 headers they will fit but its tight. I could not use the lever for the BM shifter in the correct postition. I hade to put it on the upside/otherside. Il put a Picture later tonight Il also going to explain the mods.



gratis film online
 

Robsweden

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The flexplate from the FMX fits the stock converter perfect, the coverplate was redrilled in to spots to fit the bellhousing. The header on the driver side had to be smashed a bit to fully clear the Borgeson steering box. Im using Remflex gaskets so with stock heads, thinner gaskets and original heads It would probably clear the steeringbox.

The shifter arm will hit the header flange so I just put it upside down(used Another bracket for that). Im gonna use US shift module to controll the 4r70w. I also put in 6 clutches instead of 5 in the v6 version and 4 intermedia clutches instead of 3. I used an AOD crossmember but modifed it to fit. You also need longer bolts for the case against the Engine. This should hold to 500 hp+  :) Driveshaft is gonna shortened and balanced by a local specialist that makes custom driveshaft for racing.

Here is some more Pictures











Inside the rebuilt 4t70w

Complete rebuild kit with new drums

New bearings kit

New acumalator kit

New Electronics solenoid kit

Hardened shaft Billet

New overdive 2.7 servo

Transgo Reprograming kit

Sonnax spriral retaining kit

Sonnax slip yoke

This is 98 tranny so it has lot of the upgrades done already that the transgo kit adresses.



















bilder man får använda

 
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Robsweden

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will you be using the FMX speedometer cable? 

 

How is the project progress!?? I also have a FMX and swaping to a 4r70w is my next project! So please post every single step!
Hi

Ive changed all the gauges for modern ones 3 years ago. Im using the autometer to pulse converter. It creates a signal/pulse to modern tachometers. It fits in analog output of the 4r70w just same as the FMXhad. Ive got the shortened drive shaft today. More info later.

Electronics in Place :)



 

Robsweden

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The shortened driveshaft has arrived, with high performance u-joints. I also picked up a new pan with drain plug.





 

Robsweden

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Driveshaft in Place the transmission is filled with fluid. Installed the dipstick tube. Starting with exhaust next week :)





 
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