Nice 64-66 K20. I see GM 14 bolt rear axle I wonder if that's factory K20 or swapped onto something newer.
@the_fablab_ and myself 6.0L LS swapped my parents K20 many years ago. My high school truck was a 65 Chevy K10 factory 4x4.
4runner body swap. 2nd gen 4 runners are basically free because the 3.0 suck. I gave Maitai a 3rd gen 4 runner he's got at his house he would probably be happy to have it go away.
Yup ditch Yukon, go motive and go. I ran cheaper 85-140 for the first few weeks. then I drained it and filled with maxxima, and put the cheapo in my front diff since I don't use 4x4 much so it'll be fine for that.
If you switch to Motive now you can maybe sell the Yukon for dirt cheap saying...
Yes. I was also informed by AJ at EWR that they only run maxxima 250 wt oil in their diffs.
https://www.amazon.com/gp/product/B075665Z6T/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
My experience is Yukon 9in gears blow. I went through 3 sets of them before I got the Motive amazon gears and have 0 noise from them. I'm running same ones in my f150 now that I setup and 0 noise, perfect gears. I'm not a fan of Yukon gears from my previous failures, even with multiple gear...
Taurus fan for the win. I ran that on my trans cooler and radiator on my old 89 Toyota race truck. Shit load of amps but pulls a lot of air and only $20 at junkyard
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