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  1. 84GMCSierra

    Drivers side manifold

    Are these particular manifolds hard to obtain? I've looked everywhere but can't seem to find this particular one with the port straight down. I've found a few with it angled back a little but that's it
  2. 84GMCSierra

    No oil pressure

    Good Morning Everyone I have a dilemma going on with my oil pressure. My 84 with a 350 ha been running great, everything normal, but after I parked it at work Sunday morning and then came out and started it, to go home, I had no oil pressure. No knock or running rough. I rapped on the gauge...
  3. 84GMCSierra

    New wheels and tire question

    I'm looking at getting these locally this week for my 84 Sierra 2500. The guy says they came off of a 2001 Silverado and had them on his 64 K20. I'd just need to get new lug nuts. My center hole is 4-5/8" diameter and he's going to measure the center hole on them today. What's your thoughts? The...
  4. 84GMCSierra

    AC compressor mounting images/drawings

    Does anyone have this page for the smaller compressor that I can download to hook up all my ac components again? I have this type of compressor and eventually want to convert it to R134. Thanks
  5. 84GMCSierra

    Alternating hazard lights

    Hello everyone. I encountered an issue this morning. I was checking my taillights, turn and hazard signals, and found my right turn in the back blink differently than the left, and is more dim, which I'm guessing is a ground issue. The weird part is, when I checked my hazards, only the back...
  6. 84GMCSierra

    Mystery spacer

    Good Morning Everyone. I'm doing a fluid and filter flush on my 84 TH400, and when I pulled the filter off, this spacer came out. Does it go on the bolt for the filter as I have it? I haven't had any issues with shifting etc so I'm thinking it helps keep the filter level in the pan. The bolt is...
  7. 84GMCSierra

    dust cover

    I'm looking for an original TH400 dust cover for the torque converter for my 84. I'd prefer one I can restore, that's metal. I can find aftermarket online but would like an original. I'd need it shipped to 86326, too please. Thanks
  8. 84GMCSierra

    cleaning the wiper motor

    Good Morning everyone. I was wondering if there is a way to clean the wiper motor on my 84 Sierra? I live in Arizona, and although it's not near as cold as other states, my wiper motor is very slow when I first use it in the rain. I think I read somewhere that the old grease in the motor might...
  9. 84GMCSierra

    The Beast is home

    Finally got my truck home on Sunday after it being gone for almost a year. First guy screwed me on the supposed Vortec 350 he installed. Found out it was only a TBI, which immediately detonated. So I had a good friend get me a crate 350 and install it for me. I still have some cosmetics to do on...
  10. 84GMCSierra

    "new" 350

    This is my new crate motor. 94 350, 4 bolt main. Getting a new flexplate tomorrow and hope to have my truck back on the road after almost a year and a half. First guy screwed me every which way but Sunday with a bad tbi 350
  11. 84GMCSierra

    73-80 and 81-87 Jack differences

    Not sure if this is where I post this but is there a difference in the factory jacks between years? I got one for free from a 78, with brackets handles etc, but the mounting on the passenger inner fender is different than what was on my 84 Sierra. I want the jack just for looks, so I'm hoping it...
  12. 84GMCSierra

    Fuel line connections

    I'm looking for images of the fuel line connections for the steel lines to the tank on an 81-87 with the single tank. I had pics in my computer but they disappeared. Mine has 3 lines. Can someone help me out please? Thanks
  13. 84GMCSierra

    Tailgate measurements

    I need some measurements on the inside of the tailgate, when it is closed please. My 84 is at the shop so can't get to it. Can someone get me some measurements please? Thanks.
  14. 84GMCSierra

    Good rear gears

    Good Afternoon members. Just got my truck back with the "new" Vortec 350. I want to do some long distance driving with it but was told it's geared too low. It's an 84 C2500 with the TH400. I don't know what are in it now, but want to change them out in the next few months. I'm just doing in town...
  15. 84GMCSierra

    Auto shifter bushing

    I found out the bushing that is on the shifter to column rod is missing. Can someone post a pic of what it looks like for me please? My truck is at the shop locked up. It's an 84 Sierra with the TH400. Apparently the linkage was a little bent from the PO when it was a farm truck. Thanks and...
  16. 84GMCSierra

    Exhaust downpopes

    I bought what I thought was a complete, minus mufflers exhaust system through Jegs a couple years ago, but it doesn't have any downpipes. It's a standard 2.5" kit. No one carries just the downpipes, and mine were homemade. Does anyone know who I can get just the 2 stock downpipes through? My...
  17. 84GMCSierra

    "New" Vortec 350

    Finally getting my engine in my 84 Sierra. Got a Vortex 350 a d had new timing chain and gears installed, new motor mounts, and painted GM blue for something different. Can't wait to get her back on the road. Truck has been down about 6 months.
  18. 84GMCSierra

    Radiator mounting

    Good Morning members. I have an 84 Sierra, base model with a 350. I put in a new stock radiator last year, but the upper mounts for it are homemade. I have these brackets which look correct for my truck, but online images show different types of mounting. Can someone let me know if the pads...
  19. 84GMCSierra

    Emissions question

    I have an 84 Sierra C2500, base model, and it came from California but didn't have the emissions stuff on it. I'm living in Northern Arizona right now, but thinking of moving to Tucson. If the truck didn't come with the emissions stuff, I shouldn't have to add it if they have requirements for it...
  20. 84GMCSierra

    Axle ratio help

    Hello everybody. I'm trying to figure out what the gear ratio is on my 84 base model 3/4 ton Sierra is. The SPID says GQ1 Rear Axle - Standard. I tried finding it online and the GQ1 isn't listed. Can someone help me out with this please? Engine is a 350, and the trans is a TH400. I'm hoping they...
  21. 84GMCSierra

    Bed rail "cap" width

    I'm trying to get the width of the "cap on a long bed square. The part where the stake pockets are. I can't measure mine as it's in the shop. I'm working on 2 racks that will go under my topper to hold a canoe etc. I have access to tons of scrap steel tubing etc, so want to build something like...
  22. 84GMCSierra

    3+3 for sale

    Not mine but have seen this on FB Marketplace in Sedona, Az. Doesn't look too bad. Moderator: If this isn't allowed, can you let me know where to put it? Thanks and Happy New Year There's a rough 73 C10 in Old Town Cottonwood Az that I'll try to get pics of and post that's for sale.
  23. 84GMCSierra

    Chevy for GMC Hubcaps

    I have 2 different 3/4 ton Chevy hubcaps that I want to trade for GMC caps. These are in good shape. I have an 84 Sierra so would need the 6 stripe ones
  24. 84GMCSierra

    Frame dimensions

    Good Morning everyone. Would the frame on a 90 C30 be the same as my 84 C2500? I have a chance to get a receiver hitch cheap but want to make sure the frames are the same. Standard long bed on both
  25. 84GMCSierra

    Crossfire cap

    Good Morning everyone. Hope you're having a good weekend, and if you're on the east coast and are in the hard hit areas, hope you're all ok. I have a question about those crossfire distributor caps. I saw them on the Performance Distributor website, and was wondering if anyone uses those on your...

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