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  Mustangsandmore Forum Archive
  '69 to '73 -- The Musclecar Mustang
  71-73 tranny 351c

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Author Topic:   71-73 tranny 351c
HHStang
Gearhead

Posts: 596
From: Coastal SC, USA
Registered: Feb 2003

posted 10-06-2004 12:34 AM     Click Here to See the Profile for HHStang        Reply w/Quote
which tranny did this engine use? Thanks.

Fastback68
Gearhead

Posts: 4511
From: Sucat, Paranaque, Philippines
Registered: Jul 99

posted 10-06-2004 05:38 AM     Click Here to See the Profile for Fastback68        Reply w/Quote
There would have been a few choices.. The only fact I know for sure that may be what you're after is that it used a C6, not a C4, and that was the stubby C6 housing, not the long streamlined one put behind 429s.

ddenton749
unregistered
posted 10-06-2004 08:34 AM              Reply w/Quote
My '73 351C came from the factory with an FMX.

------------------
'73 Convertible, 351C 2V
'91 LX Convertible 5.0
Member: Valley Forge Mustang Club

mach1mike
Gearhead

Posts: 135
From: UK
Registered: Apr 2004

posted 10-06-2004 01:57 PM     Click Here to See the Profile for mach1mike        Reply w/Quote
My 73Mach1 351 left Dearborn with an FMX as well, but I'm using a C4 at the moment & it seems to be coping fine.

SteveLaRiviere
Administrator

Posts: 48752
From: Saco, Maine
Registered: May 99

posted 10-06-2004 05:48 PM     Click Here to See the Profile for SteveLaRiviere        Reply w/Quote
In addition to C6 and FMX, they did also use the C4, my brother has one factory-installed in his '72 351C 2V Torino. This assumes you are only talking about automatics, they also came with 3 and 4 speed manuals too.

------------------
'70 Mustang Mach 1 351C 4V/FMX/3.25 Open
'70 Mustang Convertible 250 I6/3 speed/2.79 Open
'72 Mustang Sprint Hardtop 351C 4V/FMX/4.30 Trac Loc
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip

Fastback68
Gearhead

Posts: 4511
From: Sucat, Paranaque, Philippines
Registered: Jul 99

posted 10-06-2004 08:14 PM     Click Here to See the Profile for Fastback68        Reply w/Quote
Interesting. So assembly line managers could pick whichever was available, C4 or C6? I can see how both would work fine, but I'd just assumed a choice was made, and managers stuck with it.
Or maybe Stangs got the C6 and Torinos the C4? Or maybe it depended on the plant?

HHStang
Gearhead

Posts: 596
From: Coastal SC, USA
Registered: Feb 2003

posted 10-06-2004 10:10 PM     Click Here to See the Profile for HHStang        Reply w/Quote
I'm just trying to figure out what kind of car to be looking for to find a donor 9 inch and C-6 to put my 429 in. I had been told all 351C cars had C-6 and 9 inch. It aint' gonna be as easy to figure out as I hoped. Thanks all, Mike

RonnieT
Gearhead

Posts: 912
From: Port Allen, La. 70767
Registered: Jun 99

posted 10-06-2004 10:44 PM     Click Here to See the Profile for RonnieT        Reply w/Quote
If I am not mistaken the 351C in these year models all used the small block bolt pattern, so this transmisson would not work behind your 429.

Maybe one of the fellows that mess with the 351C will verify this.

------------------
Ronnie
69 mach1 351W-4V engineless at the time!
70 Torino GT 351C-4v with a "shaker"
Mustangs and More Member #23

Hemikiller
Gearhead

Posts: 726
From: Killingworth, CT
Registered: Feb 2002

posted 10-06-2004 10:53 PM     Click Here to See the Profile for Hemikiller        Reply w/Quote
In the 70~73 years...

6-cyl & 302: C-4
351C-2V: FMX, C-6(special order), C-4 in intermediates (for whatever reason)
351C-4V: C-6
429/460: C-6

A Cleveland uses the small block bolt pattern.

You would need a trans from a non-lincoln chassis, no T-birds or Marks, as they use the oddball long tailhousing with a straddle mount.

Fastback68
Gearhead

Posts: 4511
From: Sucat, Paranaque, Philippines
Registered: Jul 99

posted 10-06-2004 11:49 PM     Click Here to See the Profile for Fastback68        Reply w/Quote
Good info Hemi, but what's the problem with a T-bird tranny? My conversion's not-running yet, but I've got a 429 and C6 from a '70 Thunderbird sitting on a tranny mount from a 351C C6. Sure thing the mount is not the same as the original T-bird one, but apparently it fits OK - according to my mechanic. Should I slide on under there and check it out?

Fastback68
Gearhead

Posts: 4511
From: Sucat, Paranaque, Philippines
Registered: Jul 99

posted 10-07-2004 12:22 AM     Click Here to See the Profile for Fastback68        Reply w/Quote
Actually, I've just remembered. Last year I spent some time under a 71 Drag Pack Stang with a C6. That had the long tailhousing too, and what I think was a standard Stang C6 mount. (I didn't pay it any attention, which suggests there was nothing unusual about it.)

RonnieT
Gearhead

Posts: 912
From: Port Allen, La. 70767
Registered: Jun 99

posted 10-07-2004 08:23 PM     Click Here to See the Profile for RonnieT        Reply w/Quote
Hemikiller,

The 351C-4v also came backed by an FMX, at least that is what is in my 70 Torino GT.

------------------
Ronnie
69 mach1 351W-4V engineless at the time!
70 Torino GT 351C-4v with a "shaker"
Mustangs and More Member #23

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