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  1. 77 K20

    Rough country trash?

    I'd try to move the ends up a bit and wire it up and out of the way of the axle. (at least for test driving to see what you think).
  2. 77 K20

    Np203 Transfer case problem

    I even confuse myself if it has been a few months since I've driven it. I finally ordered shift knobs that have laser engravings showing what they do. Hopefully they are here tomorrow.
  3. 77 K20

    Np203 Transfer case problem

    I use it when driving up to old fire lookouts in the summer (or any very steep climb). The roads are typically very rough and steep. 2wd was all that was needed and the speeds typically were 25 mph and under. Using 2wd low reduced lugging the engine climbing then when descending there were...
  4. 77 K20

    Rough and shaking 350 after changing spark plugs

    Ugh. I didn't see you had a 1986. I had one and there are plastic vacuum lines everywhere like what Geoff said. My dad back then had a 1987 and it was way simpler! I found a vacuum diagram: it is for a 305 but think it is the same? Might be of some help. Before poking around at each one can try...
  5. 77 K20

    Best 8 inch lift kit

    https://www.offroaddesign.com/8-inch-standard-suspension-system-73-87-91-k5-k10-k20-and-suburban-with-d44-10b-axles-with-push-pull-steering.html But don't see it being less than $1500. A quick selection at offroaddesign came up to $1,758 and no shipping costs or rear spring bushings: Front...
  6. 77 K20

    Shocks and valving

    Want a free experiment? Try unbolting your sway bar from the axle and wire it up out of the way. When lifted sway bars limit the axle movement. I was amazed at how much better it rode. Some don't like it, and maybe you won't. Then bolt it back on. OR: if you like it but miss the corning...
  7. 77 K20

    The Forum I been looking for

    Great looking truck. Nice to see others from Montana here. BTW- your tires are mounted backwards... ;)
  8. 77 K20

    Rough and shaking 350 after changing spark plugs

    Check to make sure you didn't have a plug wire pop off. I've had them back off on a spark plug or on the distributor end before. :shrug:
  9. 77 K20

    Rised white letter or blackwall

    White letters in if you suck at parking against a curb: Otherwise white letters out.
  10. 77 K20

    Shock recommendation

    Bilstein or KYB mono max shocks (larger tube diameter)
  11. 77 K20

    Rear diff vent tube

    I'm kinda picturing something like this in my mind: When it rains the water will help rinse out any contaminates left in the exhaust (or differential). Remember water is a necessity of life... :shrug:
  12. 77 K20

    6" lift what wheel and tire size can I fit? I want 35's but don't know how wide of a tire and rim i can fit.

    Have any more pictures? How far out from the fender do the tires extend?
  13. 77 K20

    6" lift what wheel and tire size can I fit? I want 35's but don't know how wide of a tire and rim i can fit.

    I had to run that thru an online calculator as offset doesn't mean a whole lot to me. -34 offset on a 10" wheel is 4.16" of backspace. I had some 16x8 wheels with 4.25" backspace (-6 offset) when I ran my 315s. Your wheels will make the tire stick out 1.1" farther than mine did then. I now...
  14. 77 K20

    6" lift what wheel and tire size can I fit? I want 35's but don't know how wide of a tire and rim i can fit.

    The wheel diameter doesn't matter. It is the wheel backspace or offset that will matter. The less backspacing you have the more "room" the tire/wheel need to pivot around on the front axle. And when I ran 315/75R16 tires I didn't need to re-gear. I have 4.10s However I have a 383 that puts...
  15. 77 K20

    Front 2-3" Springs

    After going over some rough terrain did you ever get out and put your hand on the shocks? For many years I didn't think things felt very "controlled" and then one summer while in the local ORV park I got out and put my hand on my front shocks- and promptly burned my fingers. So I bought some...
  16. 77 K20

    Front 2-3" Springs

    How did your front springs get bent anyway? Did you lower the bumpstops to prevent them from over compressing?
  17. 77 K20

    Let's see those 4x4 Squares On Dirt!

    I have been waiting to fix and upgrade a few things on my truck. Haven't hardly used it for about 10 months now. :sad72: I've been traveling for work. When I'm not traveling then I'm trying to spend time with the kids. Oldest is a senior in high school now. Going to college in the fall. Truck...
  18. 77 K20

    Crossover Steering Box

    I looked into Redhead and PSC as I had heard good things about them. But decided to go a cheaper route and went with a Lares 11248 unit from RockAuto 3 years ago for $336 shipped. I went with a new unit instead of one of their re-manufactured ones. And I was led to believe it was made in...
  19. 77 K20

    6" lift what wheel and tire size can I fit? I want 35's but don't know how wide of a tire and rim i can fit.

    For all practical purposes a 315/75R16 is the same as a 35x12.50 There will be differences from tire manufacturer to manufacturer.
  20. 77 K20

    New Member - level front ‘77 k-10

    Hard to say- a 2" lift spring will lift 2" over a brand new factory ride height spring. So sometimes you put on a 2" lift and it actually raises it lets say 4". Now the new lift springs will settle a bit over the first year or so, but the unexpected additional 1" would be from how badly the...
  21. 77 K20

    New Member - level front ‘77 k-10

    When I bought my Tuff Country 2" lift springs I had a choice of the EZ ride or the HD springs. They said the HD springs were for a big block or if you have a winch and winch bumper. I had a small block and a stock bumper/no winch. The springs lifted the front 3". More front end weight drops the...
  22. 77 K20

    New Member - level front ‘77 k-10

    I guess it would be interesting to know if there is a lift block on the rear springs. Or I supposed if the truck had a small block in it first and someone swapped the 454 into it the additional weight made the front springs sag.
  23. 77 K20

    tire options for a K30 dually with 4'' lift. i

    FALKENWILDPEAK M/T01 $255 YOKOHAMAGEOLANDAR M/T $305 BFGOODRICHMUD TERRAIN T/A KM3 $334 TOYO TIREOPEN COUNTRY M/T $336 COOPERDISCOVERER ST MAXX $343 Just some options I saw for 255/85R16 on Discount Tire Direct. Free shipping. I've used them a lot.
  24. 77 K20

    New Member - level front ‘77 k-10

    The older trucks don't really have the "leveling kits" like the new trucks do. Post some pics when you get it. How much lower is the front sitting? When measuring keep in mind the wheelwells are different heights in the front vs the rear. When measuring can use the body line above the wheelwell...
  25. 77 K20

    6" lift what wheel and tire size can I fit? I want 35's but don't know how wide of a tire and rim i can fit.

    https://www.gmsquarebody.com/threads/how-will-my-square-body-look-with-xx-lift-and-xx-tires.2494/ link

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