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4r70w current day swap info
#1
Hello gang, great board here! I have a 71 Mach with a 408c 505hp with 3.89s and a 9" rear. Currently running a mighty mouse C4 with a 3000 stall that runs great. However, being primarily a street car, the RPMs on the highway have gotten old and I am looking into the 4r70w swap. I have located a 2002 out of a 3.8 v6 with 90k on it and stock converter for $200. I have been roaming old threads here on the subject but am having a hard time piecing it all together with the old and newer info. It seems as if user "InjectedMach" used to sell a crossmember and other parts that gave much more clearance etc but it does not look like he has been on the board in a long time. Would any of your guys please point me in the right direction on what the best way to go about this swap is including any freshening up/mods i should do to the tranny and install tips/components to use? I am running hooker super comp long tube headers if that matters. Thanks and I look forward to becoming an active member of this awesome forum!

[Image: Mach1.jpg]
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#2
Welcome from Iowa. Cant help you on that particular trans swap but I'm sure someone on here will chime in. Post up some pics of the car. Sounds like a great ride.

73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

- Jason


[Image: 082-hot-rod-power-tour-2017-1970-1970s.jpg]
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#3
(01-24-2020, 09:13 AM)73pony Wrote: Welcome from Iowa. Cant help you on that particular trans swap but I'm sure someone on here will chime in. Post up some pics of the car. Sounds like a great ride.
Thanks! Picture added.
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#4
Hello and Welcome from Michigan. Good luck with the swap. I have no help for you either but I’m sure someone will.

run_horse Run Horse Run!
John 72 Q Code
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#5
@Robsweden has recently made this swap
https://www.7173mustangs.com/thread-fmx-...wap--35439

73 modified Grandé 351C. Almost done. 
71 429CJ. In progress
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#6
I don’t have any first hand experience on that exact swap.

But I have seen first hand how good the US Shift Quick 4 controller is.  Pretty neat controller- easy to use software.
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