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Old 08-25-2010, 07:12 PM   #1
gregg72340
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4 speed driveshaft question

Does anyone know if there is a difference between a 4 speed driveshaft for 1/2 ton vs. one from a 3/4 ton? Both trucks are 8 ft bed trucks. Both trucks are leaf spring trucks.
Thanks
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Old 08-25-2010, 08:06 PM   #2
Shyguy
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Re: 4 speed driveshaft question

I put a 3/4 ton driveshaft out of '67 into a 1/2 frame with the 1/2 rearend. I had to get what some calls a "jump" u-joint in to match the 3/4 ton driveshaft to the half ton rearend.

I like the 3/4 ton driveshaft better because it has a heavier carrier bearing.
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Old 08-27-2010, 11:51 AM   #3
gregg72340
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Re: 4 speed driveshaft question

Quote:
Originally Posted by Shyguy View Post
I put a 3/4 ton driveshaft out of '67 into a 1/2 frame with the 1/2 rearend. I had to get what some calls a "jump" u-joint in to match the 3/4 ton driveshaft to the half ton rearend.

I like the 3/4 ton driveshaft better because it has a heavier carrier bearing.
Do you remember where you got the u-joint? was it something a place like Napa helped yu with or through one of the vendors?

Thanks
Gregg
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Old 08-27-2010, 11:57 AM   #4
LONGHAIR
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Re: 4 speed driveshaft question

"Conversion" joints should be available at your local NAPA or if you live in a big enough city to have a driveline/clutch shop, they will have them too.
You might get them at a "chain store" if you already know the part number.....
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Old 08-27-2010, 05:17 PM   #5
Shyguy
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Re: 4 speed driveshaft question

I got the one for my truck at a Fisher's Auto Parts, also some places called Federated.
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