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  Mustangsandmore Forum Archive
  '64 1/2 to '68 1/2 -- The Classic Mustang
  Driveshaft length?

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Author Topic:   Driveshaft length?
68 S-code GT
Gearhead

Posts: 3835
From: Sayreville, NJ, US
Registered: Mar 2000

posted 10-09-2002 07:10 AM     Click Here to See the Profile for 68 S-code GT        Reply w/Quote
For a 68 coupe (65-70 should be the same) with a C4 or top loader and a 9 rear. Mine is to short and I could have one made up but if I can find one at Hershey this weekend that would be cool. I think 50 is correct but when looking at the shaft where do I take and compare the measurements? Is it at the center of the eyes or is it total length?

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68 S-code FB GT 4spd(now C6)/3.25 PS PDB
68 J-code(now 289) Cp Sprint"B" C4/3L00-9" PDB PS AC
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ccode67
Gearhead

Posts: 3285
From: douglasville,ga,usa
Registered: Mar 2001

posted 10-09-2002 08:45 AM     Click Here to See the Profile for ccode67        Reply w/Quote
My 67 with the C4 and 8 inch was 51 inch from center of u joint to center of u joint.

With the 9 inch it uses a 50 inch. Unless you use a short yoke on the rear end, then you can use the 51.

It now has a T-5 and 9 inch (long yoke) and a 50 inch shaft.

Hope this helped.

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Stuart MCA #48902
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cynot65
Gearhead

Posts: 1258
From: New York
Registered: Apr 2000

posted 10-09-2002 03:13 PM     Click Here to See the Profile for cynot65        Reply w/Quote
That's a loaded question right
Tony C*

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65 Convertible, Vintage Burgandy/Standard Black Interior, 289, 4spd
M&M Member#450
It ain't done yet, but it'll be done right!!

Fastback68
Gearhead

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

posted 10-09-2002 07:10 PM     Click Here to See the Profile for Fastback68        Reply w/Quote
As a general rule, is it really OK just to swap yokes around? I've just made the 9-inch swap and the yoke on the 9-incher is about an inch longer than on the 8. But I figured that was for safety / strength.

Moneymaker
Administrator

Posts: 29200
From: Lyons, IL, USA
Registered: May 99

posted 10-09-2002 07:13 PM     Click Here to See the Profile for Moneymaker        Reply w/Quote
Measure all drive shafts from center of u-joint to center of u-joint.
Simon, you can swap yokes as long as the spines are the same and the seal area diameter is correct.

------------------
Alex Denysenko
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68 S-code GT
Gearhead

Posts: 3835
From: Sayreville, NJ, US
Registered: Mar 2000

posted 10-09-2002 09:53 PM     Click Here to See the Profile for 68 S-code GT        Reply w/Quote
So It looks like the 50" shaft from center to center

68 S-code GT
Gearhead

Posts: 3835
From: Sayreville, NJ, US
Registered: Mar 2000

posted 10-09-2002 10:01 PM     Click Here to See the Profile for 68 S-code GT        Reply w/Quote
quote:
Originally posted by ccode67:

With the 9 inch it uses a 50 inch. Unless you use a short yoke on the rear end, then you can use the 51.

It now has a T-5 and 9 inch (long yoke) and a 50 inch shaft.


The rear is a late 69 28 spline (I was told the tag is stamped like a 70) that looks to be untouched and installed a long while ago. Would it come with a short yoke? It kind of looks like the one in my FB.

Not to change the subject but do you know the power output of your engine? How is the T-5 holding up?

ccode67
Gearhead

Posts: 3285
From: douglasville,ga,usa
Registered: Mar 2001

posted 10-10-2002 07:26 AM     Click Here to See the Profile for ccode67        Reply w/Quote
quote:
Originally posted by 68 S-code GT:
The rear is a late 69 28 spline (I was told the tag is stamped like a 70) that looks to be untouched and installed a long while ago. Would it come with a short yoke? It kind of looks like the one in my FB.

Not to change the subject but do you know the power output of your engine? How is the T-5 holding up?


Not sure of the power output, it went 13.60 @ 105 leaving the line at idle to prevent wheel spin, T-5 is holding up very well so far, it's been driven about 6500 miles in the last year (2300 of that in one week )

I don't have any exact measurments on the yokes, I'll try to get them for you.

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