1986 Turbo K5

[Ski-me]

Excellent build, thanks for sharing! On last photo, notice a lot of slip yoke exposed. Do you have enough spline engagement for your driveshaft into the t-case?

[65Okasai]

Yeah believe it or not it actually has a lot more inside the seal. It was a special yoke I ordered for it. I was going to get a cv joint driveshaft but I never had a vibration problem, so I just got the extra long yoke.
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[Greenlee]

Wow! Nice K5.

[65Okasai]

Thanks, it's been a pretty fun build.

[Ski-me]

Originally Posted by 65Okasai

Yeah believe it or not it actually has a lot more inside the seal. It was a special yoke I ordered for it. I was going to get a cv joint driveshaft but I never had a vibration problem, so I just got the extra long yoke.
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Great to hear. I have a 2.5" lift and do have a slight vibration. I even extended my driveshaft just a bit too for proper slip engagement. I am trying to go SYE and CV Driveshaft to take care of it all. These trucks are so strange on vibration. Some have it, some don't in identical situations.

Well done on your build!

[65Okasai]

Originally Posted by Ski-me

Great to hear. I have a 2.5" lift and do have a slight vibration. I even extended my driveshaft just a bit too for proper slip engagement. I am trying to go SYE and CV Driveshaft to take care of it all. These trucks are so strange on vibration. Some have it, some don't in identical situations.

Well done on your build!

I had a vibration when I had my 10 bolt in it. We corrected the pinion angle when we installed the 14 bolt. Seems to have taken care of it.
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['68 Newtricks]

What did you do for a MPH signal? Was surprised to see you use a 208 since they never came with a VSS sensor. I've got a 241 but it's cable, I'd probably go to a VSS tail cone.

[NorCalAnthony]

Sweet build dude! I'm gathering parts to put a junkyard h/c/i 5.3 and 4l80e in to my 89 K5. How did you wind up mounting the 4l80e in yours? Most pickup guys just slide the stock trans crossmember back a little and redrill the holes but I haven't found any K5 guys that have used the bigger trans...

On a side note your trans sounds like it was modified at some point. Only the 2wd 4l80e's had both speed sensors in the case and the 4wd versions still had the output sensor in the transfer case (so the computer knows if you are in 4 low) and a plug where the OSS would have been in the case. GM still left the second tone ring in a lot of them so some guys are able to just remove the plug and screw in the sensor or have it added when doing a rebuild. I wasn't that lucky with my trans (from a 00 Silverado ) and didn't want to do a rebuild yet so I picked up a 32 spline np241c with VSS from a 90 Suburban.

[65Okasai]

Thanks! I just slid my crossmember back as well. I built some reinforcement plates to go on the inside of the frame.

As far as my transmission goes. It was rebuilt by Jakes transmissions and I'm guessing I got lucky. I pulled the plug out and the Oss tone ring was already there. Just plugged in the harness with the new sensor.
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