Np271 sye - Pirate4x4.Com : 4x4 and Off-Road Forum

Oreo · 03-08-2009, 05:53 PM

Got an '04 cummins 2500 with the np271 t-case and the slip yoke is puking out of the seal (again) on the back. Does anybody make a sye kit for this t-case? I don't want to waste any more money if this will happen again in 20k mi. Any info would be appreciated.

Satan's Chariot · 03-08-2009, 09:36 PM

I know this doesn't answer your question, but I have been wondering the same thing. Don't Super Duties have NP271's with fixed outputs? If so, I wonder if you could swap the outputs?

Oreo · 03-08-2009, 11:12 PM

Quote:

Don't Super Duties have NP271's with fixed outputs?

Exactly what I just found out. I just spoke to a guy from Transfer Case Express and he said the Ford np271 fixed yoke will bolt up. Only thing is the driveshaft has to be shortened/lengthened with a slip joint added which any shop can do. I'm going to go for it. Pulled the t-case out today... I'll post more pics later.

Edit: Noticed the female input on the t-case only has 23 splines. The output on the rear of the t-case has 33 splines.

Satan's Chariot · 03-09-2009, 10:40 AM

Please do, that would be awesome! I hope it goes smooth for you. I am definitely adding it to my list now.

Oreo · 03-10-2009, 06:48 PM

All done. Took the case to TCE shop and they threw in the new output shaft and tailhousing and only took an hour. Now I just have to get my driveshaft lengthened about 6" with a high angle cv added.

Oreo · 03-10-2009, 06:50 PM

The flange is from the 2004 and newer Ford 350's with the 271 tcase. Time to bench press it back into place.

Bye bye slip yoke...

Satan's Chariot · 03-10-2009, 10:00 PM

What all was needed? When you said they threw in the new "input" shaft, did you mean "output" shaft? By the way, thanks for the info!

Oreo · 03-11-2009, 09:33 AM

Sorry, the output shaft was also from an '04 and newer Ford F350 as well as the output shaft tailhousing. Same internals except for the bearing and seal on the flange end of the tailhousing.

CowboyKyle · 03-11-2009, 02:32 PM

Won't you also need to get a slip of some sort put in your rear shaft?

superswamper_800 · 03-11-2009, 02:38 PM

Quote:

Originally Posted by CowboyKyle

Won't you also need to get a slip of some sort put in your rear shaft?

Hell ya he will. I just had the samething done to my rear driveline.

Oreo · 03-11-2009, 03:20 PM

Ya, High Angle Driveline is adding a slip and a high angle 1350 CV.

03-08-2009, 05:53 PM	#1 (permalink)
Oreo Rock God Join Date: Jul 2002 Member # 12880 Location: Bay Area Posts: 1,089	Np271 sye Got an '04 cummins 2500 with the np271 t-case and the slip yoke is puking out of the seal (again) on the back. Does anybody make a sye kit for this t-case? I don't want to waste any more money if this will happen again in 20k mi. Any info would be appreciated. __________________ To the Face!

03-08-2009, 09:36 PM	#2 (permalink)
Satan's Chariot KILL 'EM ALL Join Date: Nov 2005 Member # 61919 Location: San Marcos, Texas Posts: 74	I know this doesn't answer your question, but I have been wondering the same thing. Don't Super Duties have NP271's with fixed outputs? If so, I wonder if you could swap the outputs? __________________ 2006 Dodge Cummins 4x4 G56 3 Link long arms, 40" Kevlar MT/R's and engine stuff 1984 K10, 305 that won't die, 700, 208, Rockwells and 46's

03-09-2009, 10:40 AM	#4 (permalink)
Satan's Chariot KILL 'EM ALL Join Date: Nov 2005 Member # 61919 Location: San Marcos, Texas Posts: 74	Please do, that would be awesome! I hope it goes smooth for you. I am definitely adding it to my list now. __________________ 2006 Dodge Cummins 4x4 G56 3 Link long arms, 40" Kevlar MT/R's and engine stuff 1984 K10, 305 that won't die, 700, 208, Rockwells and 46's

03-10-2009, 06:48 PM	#5 (permalink)
Oreo Rock God Join Date: Jul 2002 Member # 12880 Location: Bay Area Posts: 1,089	All done. Took the case to TCE shop and they threw in the new output shaft and tailhousing and only took an hour. Now I just have to get my driveshaft lengthened about 6" with a high angle cv added. Attached Images __________________ To the Face! Last edited by Oreo; 03-11-2009 at 09:34 AM.

03-10-2009, 06:50 PM	#6 (permalink)
Oreo Rock God Join Date: Jul 2002 Member # 12880 Location: Bay Area Posts: 1,089	The flange is from the 2004 and newer Ford 350's with the 271 tcase. Time to bench press it back into place. Bye bye slip yoke... Attached Images __________________ To the Face! Last edited by Oreo; 03-10-2009 at 07:03 PM.

03-10-2009, 10:00 PM	#7 (permalink)
Satan's Chariot KILL 'EM ALL Join Date: Nov 2005 Member # 61919 Location: San Marcos, Texas Posts: 74	What all was needed? When you said they threw in the new "input" shaft, did you mean "output" shaft? By the way, thanks for the info! __________________ 2006 Dodge Cummins 4x4 G56 3 Link long arms, 40" Kevlar MT/R's and engine stuff 1984 K10, 305 that won't die, 700, 208, Rockwells and 46's

03-11-2009, 09:33 AM	#8 (permalink)
Oreo Rock God Join Date: Jul 2002 Member # 12880 Location: Bay Area Posts: 1,089	Sorry, the output shaft was also from an '04 and newer Ford F350 as well as the output shaft tailhousing. Same internals except for the bearing and seal on the flange end of the tailhousing. __________________ To the Face! Last edited by Oreo; 03-11-2009 at 09:39 AM.

03-11-2009, 02:32 PM	#9 (permalink)
CowboyKyle Registered User Join Date: Dec 2004 Member # 40312 Location: Gonzales, TX/ Puyallup, WA Posts: 774	Won't you also need to get a slip of some sort put in your rear shaft? __________________ 2003/Ram1350/5.7L/545RF/D60/Spartan/S10.5/Detroit/5.13 2006/F250/6.8L/ZFS6-650/D60/S10.5/LSD/4.10

03-11-2009, 03:20 PM	#11 (permalink)
Oreo Rock God Join Date: Jul 2002 Member # 12880 Location: Bay Area Posts: 1,089	Ya, High Angle Driveline is adding a slip and a high angle 1350 CV. __________________ To the Face!

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