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Old 06-08-2019, 02:55 PM   #1 (permalink)
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The K30 Sierra Classic Build

Figured Iíd start a build thread on here as I go along building and restoring this 1986 K30 crew cab. Itís got a real nice interior, power everything, cruise, tilt, and is a factory 6.2/4 speed stick combo. I bought the truck from a fella who wanted to keep the axles, so he dropped it off in my driveway, we blocked it up, and he tore out he diffs

I quickly found a 14 bolt and put a Dodge 60 I already had back under it to get it rolling. Unfortunately the dodge diff was all piled up and mangled, and wouldnít turn. So the truck could drive in a straight line only


So I borrowed the front GM 60 from a 79 crew cab parts truck I happened to be sitting on



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Old 06-08-2019, 02:59 PM   #2 (permalink)
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Put some proper tires onto the thing so it looks a lot better now. Has a lift from the previous owner, not sure how much but itís pretty tall. Big blocks in the back


While the eventual plan is to swap out the 6.2 for something just a bit more exciting, for the meantime Iíve picked up an NV4500 so I can actually drive it on the highway. The 6.2 will stay until all the body work is done



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Old 06-08-2019, 03:08 PM   #3 (permalink)
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Might be a little tricky getting the 205 and NV4500 to mate. Hopefully you can make it work with minimal driveshaft mods.
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Old 06-15-2019, 08:44 PM   #4 (permalink)
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Quote:
Originally Posted by u2slow View Post
Might be a little tricky getting the 205 and NV4500 to mate. Hopefully you can make it work with minimal driveshaft mods.

No he won't. This is a extremely common upgrade. I replaced the sm465 in my 73 k20 with a NV4500. Advance Adapters makes several NV4500 swap kits.

This is the one he needs https://www.advanceadapters.com/prod...spline-nv4500/

Or he could use this one if he converts his 10 spline case to 32 spline.
https://www.advanceadapters.com/prod...e-1979---1985/

Another upgrade he should do is convert the mechanical clutch to a hydraulic clutch.
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Old 06-16-2019, 08:36 AM   #5 (permalink)
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The 4500 will bolt to the 205 very easily if you swap the tcase input to the short 32 spline. tranny/tcase combo will be almost exactly the same as the 465/205 combo. Drivelines wont need mods if you go that route.
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