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#1
runninpony 
I have a 1971 Mustang 2 door hardtop which has been in the family since new. It has an original 351 Cleveland 4V and FMX 3 speed automatic transmission. It has a 3.0 rear. The vinyl top is original.

At 65 MPH the engine is turning 3,000 RPM and it feels like it needs another gear (4th). Is there any way to replace the current FMX with a 4 speed automatic transmission and if so what transmission?
#2
Welcome to the site from Virginia. I have a manual but there's people here who have upgraded to the aod transmission. I'll let them chime in on what had to be done.
Sounds like a nice ride, we love pics.
#3
Welcome from TriCities WA.

-john
(jbojo)
351C 4V cc heads, 10.5 : 1 CR, 290 Herbert cam, Flat top forged pistons, forged connecting rods, Atomic efi,
C6 with Gear Vendor overdrive, 3.89 Tru Trac, Hooker Super Comp with 2 1/2" Pypes Exhaust.        

Some Mod pictures can be seen at:

#4
Welcome from western Tennessee! welcome

Check out Luxtangs thread on replacing the FMX with an AOD transmission. http://www.7173mustangs.com/thread-fmx-t...ete-report

Hopefully that will help.

Ron
Rusty, a 1973 Mach 1, needs a lot of work.
Billy, a 1976 Ford Bronco, also needs a lot of work.
El Guapo, a 1986 F150, frame-off Resto-Mod.
Bubba, my 1994 F150, daily driver
Formerly, a 1973 Ford Mustang Coupe - a work in progress, then a car-b-qued banana.
#5
Welcome from Mustang Oklahoma. Chuck
#6
welcome from Bundaberg Australia.

He has all the vices I admire and none of the virtues I despise
#7
Welcome to the site from Virginia. Looking forward to seeing pictures and hearing more about your coupe.



Mike AKA Ole Pony & Rare Pony

Our current Mustang garage/driveway
1973 Mustang Convert - Bought in 1974 - Still have it!
2004 Mach 1 Oxford White Auto, Bought Sept 06


[Image: 20180127_082009.jpg]

upload a photo on internet




#8
welcome From San Diego.
#9
Welcome to the club from northern Nevada. Check out Luxstang's link. If you need more help, post a question in one of the other forums.

Glad to have you here!

Doc

[Image: 6y14ea.jpg]

Project started 8-7-10
Completed: All new suspension, rebuilt 351C H Code bored .030 over with mild cam and intake, new 3.50 TracLok, custom exhaust system
Current "mini-project": interior upgrade Undecided
#10
Another welcome from San Diego! Let's see some pics!

<img src="http://www.7173mustangs.com/gallery/1_12_09_14_10_32_45.png" />

- Nik
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