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Old 05-18-2018, 09:23 PM   #126
400/400
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Re: 1981 K20 Project - The Blue Ox

Cool rig!

Let us know how it rides.

The rear shock mounts seem prone to cracking. Especially with the coil over shocks. I think ORD offers some shock mount gussets.

Do you have the front quad shocks?
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Old 05-19-2018, 08:43 AM   #127
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Re: 1981 K20 Project - The Blue Ox

Looking better and better
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Old 05-20-2018, 03:28 PM   #128
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Re: 1981 K20 Project - The Blue Ox

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Originally Posted by 400/400 View Post
Cool rig!

Let us know how it rides.

The rear shock mounts seem prone to cracking. Especially with the coil over shocks. I think ORD offers some shock mount gussets.

Do you have the front quad shocks?
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Looking better and better
Thanks guys! It rides a lot better. Its amazing what working shocks can do for an old 3/4 ton truck haha. It takes bumps at low speeds really well now. The other thing I notice is that there is less vibration when I'm cruising down the road at 55 mph. I thought it was just how 3/4 ton trucks ride with heavier springs (I've only had 1/2 square bodies before this), but after putting the coil overs on it rides much smoother at every speed. I threw the fronts on last night.

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Old 05-20-2018, 03:44 PM   #129
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Re: 1981 K20 Project - The Blue Ox

Being 25 its a no brainer that I want big tires on my 4x4. I saw a set of 33/12.5/16.5s on craigslist for $200 so I jumped on the deal. Just to be sure they would fit I scanned over the internet and made sure that 33s would fit a stock suspension. The consensus online was that 33s are the biggest tire you can put on these trucks without a lift. That was enough for me, so I went and picked them up and threw them on The Ox. WOW did they look good, they gave the truck a cool new stance. I went to back out of the driveway and as soon as I turned the wheel I heard a terrible rubbing/grinding sound.... I hopped out and found that they rub both the front and rear of the fenders.... I'm not wanting to trim my fenders so I decided to put my old 225/75/16 tires back on. The one good thing that came of this was the chance to paint my old rims black to match the truck a little better. I'm still going to keep my eye out for a set of 16's that would fit a stock suspension. Anybody running 285/75/16 tires on a stock K20?

The other thing I learned is that no shops carry 16.5 tires anymore. The shops I called laughed when I asked if they had any 16.5 tires in stock. So it may not be the worst thing in the world that these tires didn't fit.

The Ox sitting on my old tires....
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Comparing the 33s to the 225s
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If only they didn't rub...
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Old rims painted
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Concert at the local Musk Ox Farm with the girls
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Old 05-20-2018, 03:50 PM   #130
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Re: 1981 K20 Project - The Blue Ox

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Every time I see this thread I feel I'm lazy. Do love the truck.

On the ignition thing - Delco modules have more 'spike' protection than the others. That's why they cost more.

When my 4.3 started eating modules, discovered a bad Accel plug wire that caused internal distributor arcing (very difficult to see on a black cap) and subsequent failure. Good GM wires and module went 60K with no more issues. I no longer will buy Accel wires because of that.
That's helpful to know! Its a weird thing to trouble shoot because each time I try to fix it I don't know if the problem is gone until it randomly leaves me on the road dead haha. 300 miles on the latest fix this time... so we will see. I appreciate the info, if it blows again I'll probably replace my wires and check for voltage spikes coming to the distributor.
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Old 05-21-2018, 05:53 AM   #131
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Re: 1981 K20 Project - The Blue Ox

I enjoy this thread a lot. You take on most everything with enthusiasm and more often than not say that it ended up being fun. I think that approach is key to truck projects and applies to a lot more in life. All that, and now you're an old hand with a welder. Good work. I like the truck a lot, even though I'm not much of a flatbed guy, and I'm definitely not a spare tire on the grill guy, haha.
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Old 05-22-2018, 11:43 PM   #132
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Re: 1981 K20 Project - The Blue Ox

I was cruising down the road with my trailer hooked up and all of the sudden I realized I had no blinkers. I turned around and went home to do some trouble shooting. My first thought was that I had a bad fuse. I checked all my fuses and replaced my flasher....but still the problem persisted. After an hour of checking wires and crawling around the truck I came back to the fuse box. I took another look at it and wouldn't you know it, I missed one of the fuses while I was initially checking them. It also was the blinker light fuse... I pulled it out, and sure enough it was blown... threw a new one in and I was back in business.

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The blown fuse was right behind the plug with the red and pink wires coming from it. It was perfectly in the way of the blinker fuse that I initially didn't see...embarrassing haha.

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I also am trying a new look on the truck, no more front tire mount... its a little cleaner look. I think its a good change...but still think the tire could be put somewhere else. What do you guys think?

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Old 05-23-2018, 08:12 AM   #133
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Re: 1981 K20 Project - The Blue Ox

Look way better with it in the bed. I assume your air flow through the radiator will be much better now too.
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Old 05-28-2018, 12:26 AM   #134
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Re: 1981 K20 Project - The Blue Ox

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Look way better with it in the bed. I assume your air flow through the radiator will be much better now too.
Thanks! The air flow seems to much better, the motor runs around 5 degrees cooler when I'm cruising down the highway.
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Old 05-28-2018, 12:34 AM   #135
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Re: 1981 K20 Project - The Blue Ox

Not all jobs on The Ox are exciting... today I focused on the glove box. The bottom plastic strip that connects the glove box door to the dash was almost cracked completely in half. When I would open the glove box it would sag and looked like it was about to fall off the hinge. I didn't feel like buying a new one so I fixed it with some black electrical tape. It may be a little bit of a redneck fix, but it seems to be working really well.

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Old 06-12-2018, 03:50 AM   #136
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Re: 1981 K20 Project - The Blue Ox

Just read through everything. Can't believe I missed an Alaska thread. Truck is coming along nicely. Love the pop up camper!
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