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Author
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Topic: Driveshaft won`t fit C-4
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66bluefb
Gearhead Posts: 537
From: Okla.City,Okla.
Registered: May 2002
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posted 07-12-2003 02:38 PM
 
I am changing my 66 to a C-4. It is a 4 speed now. I changed the car form a C-4 automatic to a 4 speed a couple of years ago but going back to automatic so my wife can drive the car. She tried to learn to drive the 4 speed but couldn`t.I bought a C -4 from a guy in Texas and when I tried to put my drive shaft in to the rear of C-4 it wouldn't go all the way in. It is real tight and only goes in about half way. This is the same drive shaft from my first C-4 and it worked with the toploader too. Is the yoke different on some C-4 s? Thanks, Tony------------------
http://ourworld.cs.com/blagintony/myhomepage/auto.html
86-302 HO bored .030 over crank .010 under,
B-303 cam ,harland sharp roller rockers,
performer rpm intake, 625 carter
66-289 heads, ported with 160-194 valves, 3 angle valve job,
4 speed toploader,granada disc brakes, 85 duraspark ignition, pony interior,the who,the doors,and ccr full blast on the stereo
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Fastymz
Moderator Posts: 22791
From: Reno Nv M&M #1240
Registered: Apr 2001
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posted 07-12-2003 02:45 PM
Tony I'm not sure but these are two things to look at, see that all the splines are ok.Also is the outer part of the shaft clean that goes into the trans.I have had to buff them up before to them to slid in.
------------------
SCOOP 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. https://mustangsandmore.com/ubb/Fastymz.html
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66bluefb
Gearhead Posts: 537
From: Okla.City,Okla.
Registered: May 2002
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posted 07-12-2003 02:55 PM
Ron, I looked at the shaft before trying to install the yoke and it looked fine. We even greased it up pretty good with no results. Tony------------------
http://ourworld.cs.com/blagintony/myhomepage/auto.html
86-302 HO bored .030 over crank .010 under,
B-303 cam ,harland sharp roller rockers,
performer rpm intake, 625 carter
66-289 heads, ported with 160-194 valves, 3 angle valve job,
4 speed toploader,granada disc brakes, 85 duraspark ignition, pony interior,the who,the doors,and ccr full blast on the stereo
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Fastymz
Moderator Posts: 22791
From: Reno Nv M&M #1240
Registered: Apr 2001
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posted 07-12-2003 04:15 PM
Tony are you sure the drive line goes in any further?
I dont think my goes in all the way,but now I can't remember.------------------
SCOOP 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. https://mustangsandmore.com/ubb/Fastymz.html
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RonnieT
Gearhead Posts: 912
From: Port Allen, La. 70767
Registered: Jun 99
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posted 07-12-2003 07:53 PM
If this was a rebuilt transmission it is possible the tailhousing bushing needs to have a little more clearance in it. It could also have been damaged when installed.------------------
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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rockafellz
Gearhead Posts: 1459
From: San Lorenzo, CA, USA
Registered: Aug 2001
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posted 07-12-2003 08:10 PM
Manual yokes and auto yokes are different. I believe the spline count is different by 2. The splines won't mesh together.Erik ------------------
1966 Ford Mustang 2+2
Mine - Restomod in Progress 1966 Ford Mustang Coupe
Dad's - Original Unrestored
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66bluefb
Gearhead Posts: 537
From: Okla.City,Okla.
Registered: May 2002
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posted 07-12-2003 08:23 PM
I used the same driveshaft from C-4 when I went to a toploader.Now I want to go back to C-4 and the same driveshaft but different C-4 and it wont fit.
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http://ourworld.cs.com/blagintony/myhomepage/auto.html
86-302 HO bored .030 over crank .010 under,
B-303 cam ,harland sharp roller rockers,
performer rpm intake, 625 carter
66-289 heads, ported with 160-194 valves, 3 angle valve job,
4 speed toploader,granada disc brakes, 85 duraspark ignition, pony interior,the who,the doors,and ccr full blast on the stereo
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Hemikiller
Gearhead Posts: 726
From: Killingworth, CT
Registered: Feb 2002
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posted 07-13-2003 08:47 AM
Erik, there are only two spline counts ont he Mustang trannys, 28 (C-4, SB toploader) and 31 (C-6, FMX, BB Toploader, some SB toploaders)There are different lengths of the yoke as well. There is a rubber seal that -sometimes- is still on the splines of the transmission. I'd recommend that you tap on the yoke with a rubber mallet --very-- lightly. See if it'll move in a bit. Otherwise, either remove the extension housing from the trans and see whats going on, or get a shorter yoke...
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Rory McNeil
Gearhead Posts: 1889
From: Surrey, B.C. Canada
Registered: Nov 2000
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posted 07-14-2003 01:54 AM
I don`t know excatly what the years were, but I seem to recall that some of the earlier Mustangs had a smaller tailshaft (25? spline?)------------------
78 Fairmont 428 4 speed 10.20@130mph
80 Fairmont 302 5 speed 12.8@105mph
85 Mustang NHRA Stocker 302 5speed. soon to be under the index!
59 Meteor (Canadian Ford) 2 dr sedan 332, auto
74 F350 ramp truck 390 4spd
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66bluefb
Gearhead Posts: 537
From: Okla.City,Okla.
Registered: May 2002
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posted 07-16-2003 11:35 PM
Just wanted to let you guys know that I finally got my driveshaft in.The man I bought the tranny from emailed me and said he put a new tailshaft bushing in and told me to force the joke in. He said after a few in and outs it should get easier to go in and out and it did.Thanks for everyones advice. I`m going to install the C-4 next weekend. Tony------------------
http://ourworld.cs.com/blagintony/myhomepage/auto.html
86-302 HO bored .030 over crank .010 under,
B-303 cam ,harland sharp roller rockers,
performer rpm intake, 625 carter
66-289 heads, ported with 160-194 valves, 3 angle valve job,
4 speed toploader,granada disc brakes, 85 duraspark ignition, pony interior,the who,the doors,and ccr full blast on the stereo
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Fastymz
Moderator Posts: 22791
From: Reno Nv M&M #1240
Registered: Apr 2001
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posted 07-17-2003 01:28 AM
Tony thanks for telling us what it was.  Glad you got it worked out.------------------
SCOOP
If at first you don't succeed, skydiving is not for you.
2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. https://mustangsandmore.com/ubb/Fastymz.html
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