GM Drivetrain & Suspension Chassis | Transmission| Driveshaft | Gears/Rear End/Differential | Traction Aids

4L80e swap

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Old Mar 8, 2010 | 07:21 PM
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Default 4L80e swap

I finally found a 2wd 4L80e transmission.

Does anyone know what yoke and driveshaft is required and what has to be done to the driveshaft for a swap on my rcsb?

I have the tune, wiring and crossmember figured out.

heres a couple pics
Attached Thumbnails 4L80e swap-imag0024.jpg   4L80e swap-imag0025.jpg  
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Old Mar 9, 2010 | 10:33 PM
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Im a extended cab but i used the slip yoke that came with the trans and found a conversion u joint..... I dont know about a regular cab but i guess you probably have to shorten the driveshaft.. Do the single cabs have a one piece driveshaft???? I just did that swap like 2 weeks ago and so far im happy with it...
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Old Mar 12, 2010 | 07:18 PM
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Neapco N3R-3-9161X
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Old Aug 8, 2010 | 10:43 PM
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Originally Posted by BigCountryx
Neapco N3R-3-9161X
So this yoke fits the 4l80e but drops down to the smaller 3r u-joint. I have pulled the 4.3 and have a 6.0/80e sitting in our 01 extended cab. Figuring out this drive shaft is almost the last thing I need to finish it up.

It looks like the yoke I have now for the 4l80e takes a 1410 u-joint. This yoke would be much better than a conversion u-joint (if they even make one from 3r to 1410).
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