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    1986 GMC K25 Oklahoma $2750

    Well, guys, I've decided it's time to sell the square. It has been pretty good to me, but it's just not the platform I need for a secondary vehicle. I'm going to have just one vehicle for a while, but my future plans involve a K5, so I shall return sometime. I'll probably still lurk around the...
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    Gasket between sm465 and transfer case.

    There is a gasket there, buy Oreillys says they can't get them. A fairly trustworthy gearhead I know said you can just use RTV right there, but I want to use a gasket since there is already one there. I haven't looked online yet, but what do you guys think? RTV or gasket? Sent from my HTC Hero...
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    Silicone on a rubber gasket?

    I never can remember which gaskets you are or aren't supposed to use silicone with. Sent from my HTC Hero S using Tapatalk 2
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    What to do with emissions stuff?

    My truck has some leftover emissions parts on the exhaust manifold. They weren't bothering me, but they got kind of bent up removing the engine. What's the best way to get rid of it? Not sure what it's called, but It's a little flap inside the connection at the bottom of the manifold? I think...
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    Question about splitting sm465 from transfer case

    I'm close to having my engine and tranny ready to pull as one unit. We got to the point of splitting the transfer case from trans and had a question. We were thinking we'd leave the driveshafts and transfer case in place if we could. The adapter from trans to transfer case is mounted to the...
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    Rear drum adjustment question

    I'm trying to get my rear drums off and the SOBs are stuck on there. I've taken a bfh to it already. I adjusted one side both directions (other side is seized), but I don't know which direction loosens and which one tightens the shoes. Do I need to spin the adjuster up or down? Sent from my...
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    Do I pull engine or tranny?

    Here's my dilemma. I keep going back and forth on whether to pull my engine or tranny to solve my problems, which are: Leaking rear main Leaking valve covers Leaking oil pan Bad clutch Power steering leak If I pull the engine, I can fix my clutch and have room to fix all the engine stuff...
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    Broke second throttle cable in 6 months.

    Shortly after I bought my K25, the throttle cable frayed and snapped in the middle. No biggie, it looked old. Replaced it in August. Got in it today after work and hit the gas once to get her going and it broke again. This time it just pulled out of the crimped end at the carb. JUNK! Put another...
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    No baffle plate in electric choke.

    Hey guys. I just put a carb kit on my edelbrock 1406. The diagram that came with it showed a baffle plate as part of the electric choke, but mine didn't have one. So, 1: what does it do? 2: why don't I have one and do i need to get one? Sent from my HTC Hero S using Tapatalk 2
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    Replace accelerator pump during carb rebuild?

    I'm ordering a rebuild kit and new floats for my edelbrock carb on my K25. Would it be wise to go ahead and replace the accelerator pump now since I'll have it out and apart? Most of my carb experience is on small engines and four wheelers. Sent from my HTC Hero S using Tapatalk 2
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    Flatbed bed rails and tailgate.

    I'm going to make some be rails for my flatbed out of wood. Probably a 2x6 on each side with 2x4 supports. I want to make a drop in 2x6 tailgate that can either go at the end of the bed or 18in behind the cab for a catch-all spot. I'm looking for ideas on how to secure the tailgate, but keep it...
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    SM465 pops out of second

    Usually during acceleration or a hill climb. I've heard this is a fairly common issue for this trans. Is there anything that can be done about it? Sent from my HTC Hero S using Tapatalk 2
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    What is broken and how do I fix it?

    I finally got all of the u-joints out of my front driveshaft but something weird happened. I've changed quite a few u-joints but never on a driveshaft like this so I'll try to describe it as best I can. This is on an 86 K25 btw. There is a ball and socket joint between the two u-joints nearest...
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    Lugnuts for gmt800 3/4 ton wheels

    Just picked up a set of wheels from a gmt800 this afternoon. The guy told me the lugnuts that came with them are metric and won't work on my 86. So, for you guys that are running these wheels, anybody have a part number for the correct lugnuts with threads on the outside for the center caps...
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    K20 front driveshaft U-joints

    I pulled my driveshaft out last night because one of my front u-joints has needed replaced since I bought Old Red. I got the front joint out no problem, but I've never dealt with joints like the rears (nearest the tease). I looked up the parts at Oreillys and the joints they called for are the...
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    Temp gauge question

    Hopped in ol red the other night to go for a drive and didn't make it two miles before my temp gauge was showing red. Now before this I never even paid attention if it worked. It's a relatively new truck to me and I'm still getting to know it. So I drive back to the house and park it. I went...
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    Got turns and brake lights, but nothing else.

    All my fuses look good. Was messing with the headlight switch and pulled the knob out using the button on the side, now it won't hold itself in. What's the deal? Sent from my HTC Hero S using Tapatalk 2
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    Issues when turning sharply on pavement.

    Any time I crank the wheel and turn on dry pavement, my truck kind of acts like the front end is locked up. But it doesn't have a locker (as far as I know). It just acts kind of lurchy like I'm making a sharp turn in 4 wheel drive. Could it be stuck in 4wd somehow? Any insight?
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    What do I do about these wheels?

    Here is the link to what I'm working with ----> http://www.gmsquarebody.com/forum/showthread.php?t=7667 The wheels are white, but they are rusty. I'd like to paint them or something. Do I go with white again (nothing else on truck is white) or do I go black? I'm not really partial to black...
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    Shift Knob

    I saw this at a rodeo a few weeks ago. It's a hame top. Part of a harness for a horse. Thought it would make a cool shift knob for an old pickup.
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    Help me diagnose trans/clutch issue.

    Specs: 86 K20 350 4 speed (low, 1, 2, 3) I don't normally use low gear when taking off from a dead stop. 1st gear is plenty low for that. But, a lot of times when taking off, there is a noticeable shudder. No other time than taking off. I really have to baby it to avoid the issue, but if I...
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    86 K20-Considering Helper Springs

    My K20 has been a farm/feed truck for most of its life and it's been carrying a steel flatbed for the same amount of time. The rear springs are holding up fairly well, but I'm considering maybe a helper spring...or Timbrens? What do you squares use?
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    Leaking valve covers causing exhaust leaks?

    I had a decent exhaust leak from my passenger side manifold that was there when I bought the truck. Dropped by the parts store and got new gaskets and swapped them out real quick. No leak all the way home and then back to the restaurant to eat supper. When we went out to leave, I can hear a...
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    Ignition locked up

    I got home a little while ago and when I pulled up in front of the house, I couldn't turn my truck off. Never had that happen before. I tried every trick I could think of. I finally had to bump the starter and it finally let itself go backwards. Any ideas?

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