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  1. L

    A/C control , no power

    Hi everyone, been a while since I worked on the truck , but was just starting it up other day and turned a/c on and absolutely nothing happened. So, I checked the fuse. Seemed to be ok, didn't look blown. So then I took dash bezel and got a/c control out so I could get to wires at back...
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    Holley fast idle screw

    Got a new Holley Street Warrior carb to replace the old Holley carb that kept being buggy. Runs great but I would like to get the fast idle down a little bit, just seems really high, definitely not the 1400-1600 they say it should be out of the box. Anyway, I know the screw is under the choke...
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    Left turn signal problem

    Got a problem somewhere in left turn signal. Right side is fine .Heres what it does, when i turn signal on, the blinker lights come on and stay on, front and back . So seems to me switch in column is working cause its causing them to at least come on. I have swapped all bulbs around, it is...
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    opinions on tire size for 17" wheels

    So, thinking about 17 " wheels for the 87. I was curious what a good size is for a truck that is lowered 2" front and back, would like for it to take up wheel well decently. Don't really care for the rubber band look, I like a little size to the tire. All opinions are welcome, thanks
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    Fuel pressure gauge question

    I put an inline fuel pressure gauge on and its jumping like crazy, someone said it is because I have mechanical pump. If thats true , why is that?
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    Lost gauge lights and taillights

    So, in constantly fooling with this truck , 87 GMC, I have managed to lose gauge lights and taillights. Headlights work, blinkers work, brake lights work. What did I unhook?
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    Anyone paint their bumpers?

    Just curious if anyone painted their bumpers, maybe to match body . Pictures??
  8. L

    Wiper/ turn signal switch

    So my high beams are stuck on permanently , nothing happens when I pull lever back to put on low beams. The turn signals work, wipers do not. I assume all that is same switch which seems very hard to get to. Am I right? If so, what all has to come off? Seems like its way down in column.
  9. L

    What did you replace factory radio with?

    So I am needing to replace factory radio. What will fit and not break the bank? Thanks
  10. L

    exhaust manifold donut

    Hi everyone, my question is about the exhaust manifold donut gasket. A while back I installed a reproduction stock exhaust on my 87 . I ordered new donuts but they were different from mine , seems like they had a metal sleeve on it and mine do not, so I reused old ones. Well now I have decided...
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    Intellitronix gauges anyone?

    Just wondering who has tried. Liked?, didn't like? I am thinking of replacing my old original gauges that half work, and looking for input on the Intellitronix. They certainly look good.
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    temp gauge question

    So my temp gauge stopped working. I have tried another old gauge , didn't work. Changed sender, didn't work, so finally used my head and used voltmeter. I have 12v at the sender, so ruled that out, took gauge off and can't get 12v at any of the terminals that gauge plugs into. So, should I...
  13. L

    What spark plugs do you run?

    Just curious here, what spark plugs to run. Right now I have Autolites in. Reason I ask too is because I also have a set of Accel that I bought for it , but the part that is inside the head ( dont know what to call it ) is longer on the Autolites . Like it is further into cylinder, but both seem...
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    tbi to carb wiring ?

    Ok, I know a lot of people have an opinion on this swap and thats fine, to each his own. Now, what I need to know about is from anyone that has completed this swap. I have couple questions on the wiring. First , will anything need to be still plugged into the computer or can I just unplug it...
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    lowering shackle install

    So, I am in the middle of installing lowering shackles on the rear of my 87 GMC . But I don't see how they will fit. There is a brace running above the shackle and the leaf spring will not go any higher without hitting it. I know I am doing something wrong here, just don't know what. Anyone...
  16. L

    Temp sensor

    so my temp sensor stopped working, which sensor goes to gauge, on front of intake ir the one in the head? Its an 87 with 305
  17. L

    87 iac question again

    Been a while since I had time to fool with truck but the last thing I did after having stalling and bad idle problems on a new rebuild was to replace iac. So, here is where I am at, after replacing with new ACDelco IAC , it starts, idles real high for a while, then finally settles down, runs...
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    aftermarket gauges

    Anyone put aftermarket gauges in stock bezel? If so, how . Or is there a bezel you can buy that accepts aftermarket gauges? Thanks
  19. L

    IAC question

    Hi everyone, I haven't had much time to work on the 87 in a while , but where I left off before on another thread was, I had rebuilt motor and replaced all sensors, fuel tanks, pumps ,etc . Anyway, my question is about the IAC valve , mainly, what is supposed to happen with the pintle when you...
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    Body moldings

    Truck is painted, looking to put new body moldings down side. I have seen the flexible molding like on it originally on ebay fairly cheap. Also looking at a kit from LMC trucks that is stainless for like $140. Anyone ever used the kit from LMC? Pictures? Thanks
  21. L

    87 starts and runs, then dies

    Ok, so I rebuilt the 87's 305 a while back and have it in, replaced everything on it. Also replaced fuel tanks , lines and pumps. Now, it will fire off and run fine for about a minute, then suddenly just dies. I've watched injectors squirting fuel fine right up til it dies, so seems to be...
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    Electronic spark control module

    87 Sierra Classic, rebuilt motor while back and been fighting some kind of timing issue. Idles bad, wants to stall in gear, popping through exhaust. Replaced distributor , ignition module and pickup coil, plugs , wires , coil. Now I am wondering about this electronic spark control module...
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    Fuel lines on 87

    I am in process of replacing the dual tanks / pumps and fuel lines. Now I have an 87 with TBI 305. I am trrying to figure out whether to make my own lines. i have read up on a thread or two and not really sure what to do. I think my first question is what is the psi I have to keep in mind ...
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    Gas tank stuff

    Hi everyone, about to drop both tanks on my 87 Sierra Classic and replace pump/ senders and hoses . So I have been looking up pump / senders and can only find the pump / sender for the right tank, the left tank all I find is the sender. Is there not a pump in both?? Also, I found the...
  25. L

    not starting

    Hey guys, 87 GMC Sierra 305 tbi . Rebuilt engine, Ive had it running for a while , but when I put it in gear it would die or barely move. I had yet to set timing so decided to try to set it. Found the brown /black stripe wire and unplugged it. That's when the trouble started . I haven't...

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