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Transmission swap C6 Code Q Gran Torino 1974

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Dan65 View Drop Down
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    Posted: 26-October-2014 at 7:16PM
Hi everybody,
As some of you know, I'm rebuilding a 73 Mustang Mach one 351 Cobrajet to put in my car.
Originally it was a 2v Cleveland and C4 trans. I have the opportunity to buy a workingC6. It seems that the bolt pattern  of the bell housing is very similar but not exactly.

What I would like to know is if the gear would suit my engine/rear axle and car.
The trans came from a 79 F150.
Already thanks for your answers.
Dan
First picture is the C6 next is my original C4

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californiajohnny View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 26-October-2014 at 7:36PM
the bolt pattern looks different, what motor was in the truck that it came from?
JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION
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67gt5003119 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 67gt5003119 Quote  Post ReplyReply Direct Link To This Post Posted: 27-October-2014 at 2:00AM
That is a big block C6, will not fit behind a cleveland.
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72 RS 351 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72 RS 351 Quote  Post ReplyReply Direct Link To This Post Posted: 27-October-2014 at 8:07AM
Originally posted by 67gt5003119 67gt5003119 wrote:

That is a big block C6, will not fit behind a cleveland.


Ditto, you need a small block C6, which are tougher to find.
Don
73 Ranchero "Sport 72 front end", floor shift/console, planning EFI 7000+ rpm 351-4V &4R70W
73 Ranchero GT 351C-4V &4R70W for sale later.
92 Lincoln Mark VII SE GTC, OBDII 347/4R70W
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Billy C View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Billy C Quote  Post ReplyReply Direct Link To This Post Posted: 27-October-2014 at 10:06AM
C4 is lighter too.. why not just build up the C4? If you find a C6 it's going to need modified to make it feel nice anyways right? At least a new torque converter. 

It's just what I was thinking.. don't want to steer you in the wrong direction though.
-Billy Conturo
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Dan65 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dan65 Quote  Post ReplyReply Direct Link To This Post Posted: 27-October-2014 at 7:11PM
Hi, thanks for all your answers.This has make me save money.
My first idea was to reuse the original C4. It has only 80000 mlx, and works as new. 
This is an idea to build it up.  I will ask somebody here who knows very well a mercian transmissions.
Many thanks for your help.
Dan.
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