universal joint

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sprog777
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universal joint

Post #1 by sprog777 » Tue Oct 10, 2017 12:02 pm

What are the correct u joints for 1966 mustang with c4 tranny and 200ci motor. Duralast part numbers?

sprog777
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Re: universal joint

Post #2 by sprog777 » Tue Oct 10, 2017 12:10 pm

This is important to me because I have a driveline vibration and I think it may be improper application of u joints. I've been researching and have not come up with clear answer. And I think everything is stock.

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wsa111
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Re: universal joint

Post #3 by wsa111 » Tue Oct 10, 2017 2:13 pm

Try rotating the drive shaft 180" then rebolt it to the diff. flange. It may have been out of phase.
If your driveshaft is a 2 piece joined by a rubber fit, the front ujoint may be out of phase with the rear joint.
The only solution is replace the driveshaft & make sure it is balanced.
If you still have problems check pinion angle to match the tailshaft angle.
67 mustang,C-4, with mod. 80 hd, custom 500 cfm carb with annular boosters, hooker headers, dual exh.-X pipe, flowmaster mufflers, HEI dist. Engine 205" .030" over with offset ground crank & 1.65 roller rockers. 9.5 comp., Isky 262 cam.
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bubba22349
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Re: universal joint

Post #4 by bubba22349 » Tue Oct 10, 2017 8:19 pm

In order to know the correct part number of U Joints you would also need to know if you orginally had inside or outside lock rings. Good luck :nod:
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

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Re: universal joint

Post #5 by sprog777 » Sat Oct 14, 2017 12:33 am

Inside lock rings with one inch cup at transmission. But I think at rear end the inch works for the drive shaft but the pinion yoke is larger " I think " . Surley someone have changed the u joints on these 50 year old cars. If your rear drive shaft joint is two different sizes like 1 inch for shaft and larger for yoke you probably would have noticed that. Any feed back will be appreciated.

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bubba22349
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Re: universal joint

Post #6 by bubba22349 » Sat Oct 14, 2017 11:33 pm

sprog777 wrote:Inside lock rings with one inch cup at transmission. But I think at rear end the inch works for the drive shaft but the pinion yoke is larger " I think " . Surley someone have changed the u joints on these 50 year old cars. If your rear drive shaft joint is two different sizes like 1 inch for shaft and larger for yoke you probably would have noticed that. Any feed back will be appreciated.


Ok so a 1966 Mustang 200 with C4 and if your driveshaft uses the inside lock rings then the Duralast part number is 1-3600DL for the front U Joint and 1-2173DL for the rear U Joint. Good luck :nod:
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

sprog777
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Re: universal joint

Post #7 by sprog777 » Sun Oct 15, 2017 11:35 am

Thank you so much for that info. I went with moog but they have same size they just cost a lot more.

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bubba22349
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Re: universal joint

Post #8 by bubba22349 » Mon Oct 16, 2017 8:19 pm

Your very welcome and :beer: yes Moog is the better choice in quality! Good luck :hmmm:
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

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