NP 271F 1480 joints

stillsmokin

stillsmokin

all out of fuel
Joined
Jan 23, 2007
Messages
228
Just curious how guys who are sled pulling fords have switched to 1480 u-joints? Are you running a bolt on rear output or whole new yoke? Also, are you running a larger (monster) stub shaft in the rear driveline?
 
The 271F shaft is on top, a dodge 273 is on bottom. You already know the 271F uses a flange on the output of the shaft. You just need to find the right piece to go from the flat flange to a 1480 joint. That's what I ran before. Had a slip joint in the rear driveshaft using a stub that was the biggest available for a 4" driveshaft. Didn't matter though, I broke the rear D80 1480 yoke once, then broke the stub shaft later in the summer.

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It seems that the stub shaft becomes the weak link with the Ford case, although the case itself is stronger in the output area. I don't understand why it appears there is not a 1.937 30 involute spline slip yoke available in 1480. There is a tube shaft "stub" available. I figure it is plenty overkill for what we are doing.

I hate slide yokes as they typically bind with high torque and heavy loads. But, if that is the way I need to go big, I'll have to do it for now. Just seems like the wrong answer to the problem.
 
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What application or where would someone find the 1480 series u-joints to bolt up to the ford 271 transfercase?
 
Would 1550 series joints give any benefits over 1480 or is the week point not in the joint? I was looking at putting a ford 271 on my dodge to get away from the oil leak associated with the slip yoke but have recently changed my mind. I found a 1550 slip yoke that will fit in the 271 t-case and I also found 1550 flange yokes that will bolt to the dodge rear axle input flange.
 
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LReiff said:
Would 1550 series joints give any benefits over 1480 or is the week point not in the joint? I was looking at putting a ford 271 on my dodge to get away from the oil leak associated with the slip yoke but have recently changed my mind. I found a 1550 slip yoke that will fit in the 271 t-case and I also found 1550 flange yokes that will bolt to the dodge rear axle input flange.
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Many 3.0 trucks run the 1480 stuff and have great luck. Got-Torques miscalculation was he was running 3.54 in my opinion.
 
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LReiff said:
Would 1550 series joints give any benefits over 1480 or is the week point not in the joint? I was looking at putting a ford 271 on my dodge to get away from the oil leak associated with the slip yoke but have recently changed my mind. I found a 1550 slip yoke that will fit in the 271 t-case and I also found 1550 flange yokes that will bolt to the dodge rear axle input flange.
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hmm. I wonder how much 1550's would cost over 1480's. As far as d80 rear- end yoke, rear-end u-joints, and transfercase end u-joints.
 
zstroken said:
Many 3.0 trucks run the 1480 stuff and have great luck. Got torques problem was he was running 3.54 in my opinion.
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Without a doubt, 3.54 was the problem.

kleann said:
hmm. I wonder how much 1550's would cost over 1480's. As far as d80 rear- end yoke, rear-end u-joints, and transfercase end u-joints.
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It would cost too much for a 2nd gen setup. The 4500 & 5500 dodge have 1550 stuff so it's a direct bolt up for the 2500 &3500 back to '03.
 
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It wasn't a problem, just a calculated risk, lol...

what is the bolt circle diameter on the ford output flange?

If it is 4.25", then I think I used a spicer flange yoke 3-2-1719. Just an FYI, the catalog doesn't show a 1550 available in a bolt circle of 4.25".

I believe the 1480 yoke shaft was a 1.5620-16 Spline, spicer part # 3-82-1121. I broke one of these two and it split the slip yoke apart at the same time. they do list one more alittle bigger in 1480, it is a 2.2500-10 Spline (no idea on availability though).
 
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GOT-Torque said:
It wasn't a problem, just a calculated risk, lol...

what is the bolt circle diameter on the ford output flange?

If it is 4.25", then I think I used a spicer flange yoke 3-2-1719. Just an FYI, the catalog doesn't show a 1550 available in a bolt circle of 4.25".

I believe the 1480 yoke shaft was a 1.5620-16 Spline, spicer part # 3-82-1121. I broke one of these two and it split the slip yoke apart at the same time. they do list one more alittle bigger in 1480, it is a 2.2500-10 Spline (no idea on availability though).
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Where did you order these, cheapest?
 
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you can save a few bucks elsewhere, but the one time another place sends you the wrong part and wont take it back, you end up spending more in the long run. Greensburg's prices aren't out of line and they will make it right if there is a problem. Good people...
 
I did find a link to spicers online catalogs on pirate4x4 FWIW. I ended up finding a 1.937" x 30 spline 1610 slip flat flange yoke, the number I scratched down was 5-3-3211KX. I found a 1480 bolt on yoke that fit it. The tube spline is 9-40-11, 9-40-21, or 9-40-41 dependent on exactly a guy wants. The 5-3-3211KX It isn't the most appealing option with all the additional hardware it requires (extra bolt on flange yoke to get it to 1480) and the only online price that I could find was $480! Hopefully that is a high price. Otherwise, I think I'd see if high angle or somebody can make me a one piece yoke that spline that can handle the abuse.

FWIW This isn't necessarily the silver bullet, but a possible idea. I'm sure if we do some digging we can find something in a tube spline around 2" that is readily available. The stub should not be an area of concern as far as strength is concerned if it is in the neighborhood of 2".
 
GOT-Torque said:
It wasn't a problem, just a calculated risk, lol...

what is the bolt circle diameter on the ford output flange?

If it is 4.25", then I think I used a spicer flange yoke 3-2-1719. Just an FYI, the catalog doesn't show a 1550 available in a bolt circle of 4.25".

I believe the 1480 yoke shaft was a 1.5620-16 Spline, spicer part # 3-82-1121. I broke one of these two and it split the slip yoke apart at the same time. they do list one more alittle bigger in 1480, it is a 2.2500-10 Spline (no idea on availability though).
Click to expand...

Hey man, do you know what size tube you have to use for the 10-spline yoke shaft? What tube did you use for the 16-spline? Seems like the 10-spline is the olnly way to go though if you broke the other one....
 
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