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  1. 1980 Big Ten

    HT350 and Overdrive Question

    Similar to @mrghostwalker, I have an original TH350 and am looking to upgrade so that I can use overdrive on the interstate and save on gas. Mine is a 1980 C10 Big 10 with a CBC 350, 4-bbl Q-jet, and P235/75R15 tires. No idea what the gear ratio is or how to find it. I want to tow a simple...
  2. 1980 Big Ten

    Big 10 Catalytic Converter, lol.

    I think 1980 was the last year of the Big 10’s, thanks to EPA changes to GVW emissions exemptions. The Big 10’s had to wear catalytic converters that year. I pulled out my sun visor to fix the cracked vinyl, and I’m smiling at the catalytic converter sticker on the back. It’s almost as if EPA...
  3. 1980 Big Ten

    Fuse panel add on wires?

    I just used one of those add-on pigtails to run constant power to a new stereo head unit in the headliner (for the memory). I tapped into the horn/cab light fuse. This video helped:
  4. 1980 Big Ten

    BORA wheel spacers

    Did y’all go with steel or aluminum spacers and why?
  5. 1980 Big Ten

    BORA wheel spacers

    I’m just starting my research on spacers, so this might be a dumb question: to minimize play, wouldn’t it make more sense not to use anti-seize and instead put bare metal on metal and let rust help bond them together?
  6. 1980 Big Ten

    Rust Repair Under Molding/Trim

    @Craig Nedrow many thanks for the feedback and kind words. Also, thanks for the link to the striping--I hadn't seen that one.
  7. 1980 Big Ten

    Rust Repair Under Molding/Trim

    @SirRobyn0 honestly grateful for that feedback. I'll take it to heart and think it over.
  8. 1980 Big Ten

    Rust Repair Under Molding/Trim

    UPDATE: I looked again at the primer that the BAPS automotive paint store recommended for my project, and I no longer think it's epoxy even though they said it is an epoxy without a hardener (i.e., not 2k). Here's a link to the actual product. I care less about whether it's epoxy than I do about...
  9. 1980 Big Ten

    Parking Light Puzzle

    Interesting. That would seem to me that the turn signal would send a higher voltage than what the parking lights receive when the switch is on. Nevertheless, I‘ll order some replacement bulbs and see if that fixes it. Thanks!
  10. 1980 Big Ten

    Parking Light Puzzle

    My passenger side parking light only illuminates with the turn signal. Is this the sign of a bad switch at the dash? Could it be something else?
  11. 1980 Big Ten

    Rust Repair Under Molding/Trim

    UPDATE: Today started with applying a Simple Green Crystal cleaner/degreaser solution with a microfiber towel, followed by 320-grit 2" discs on the drill with the foam pad underlayment. In hindsight, I should have gone to the store for 320-grit sheets to use with a foam sanding bloc. I think the...
  12. 1980 Big Ten

    Rust Repair Under Molding/Trim

    Grateful for this recommendation. I didn't see it until after today's work. I don't disagree. I spent a lot of time considering etching primer. The reason I didn't go with it is that etching primer apparently can cause problems with overspray on the surrounding paint. If etching primer came in a...
  13. 1980 Big Ten

    SPID No Paint Color?

    Apologies if this has been asked and answered already. I've searched the forum to no avail. I'm looking for the paint codes for my truck and the Service Parts Identification Decal (SPID) doesn't list them. Questions: 1. Anybody know whether/when/why Chevy wouldn't have listed paint codes on the...
  14. 1980 Big Ten

    No paint code on SPI

    Did you ever figure out the answer? I'm having the same problem.
  15. 1980 Big Ten

    Rust Repair Under Molding/Trim

    Today I launched a project to repair minor rust under the bedside molding on my 1980. The stickers holding the molding started to pull away from the bedside and pulled the paint with them, causing rust underneath. Pic attached. I found pitting but no weak metal and no holes. I'll document the...
  16. 1980 Big Ten

    Rust Under Molding/Trim--Magnets?

    UPDATE: With all the solid advice above, I've decided to launch into a DIY spot repair project that will include reinstalling the original trim as it was originally installed with stickers and three screws. Will post details of the repair in a separate thread for all posterior. Thanks again for...
  17. 1980 Big Ten

    Boot on blower motor

    I looked at that one and passed for now because it’s $20 and NAPA said it won’t fit. I might bite the bullet and buy, but in the meantime I found a couple of websites where you can send them pics of your broken connector and they’ll recommend the right replacement. Gonna see how that goes first...
  18. 1980 Big Ten

    Boot on blower motor

    I’m dealing with the same and know nothing about connectors or what to call this one. Any chance you could point me in the right direction for buying a new connector?
  19. 1980 Big Ten

    Blower Motor Gasket?

    2nd UPDATE--just to prove that I'm an idiot, here's the instruction from the original GM maintenance manual that say's I should have used an RTV sealant: "If the motor mounting flange sealer has hardened, or is not intact, remove the old sealer and apply a new bead of sealer to the entire...
  20. 1980 Big Ten

    Electrical Connection at Blower Motor?

    Similar to the guy who posted the "Boot on blower motor" thread, I cracked my boot during installation of the new blower motor. Moreover, I can't even get my connector to lock in place, so I had to use electrical tape and zip-ties for now. NAPA says the part referenced in the thread above...
  21. 1980 Big Ten

    Blower Motor Gasket?

    UPDATE--Today I installed the new blower motor from Rock Auto. I tried adding the 3M "Strip Calk" gasket as is without stretching and thinning it. Of course, the screws were too short to easily install the new motor with the gasket. Before pressing hard to force the motor on, I looked closer at...
  22. 1980 Big Ten

    I finally realized why I like working on my '81 C10 so much

    Getting back to the title of this thread. I learned to drive in a squarebody suburban, and my family owned two while I was growing up. I bought my C10 a few years ago because I remembered fondly those years with the suburban--the sound of the transmission, the smell of the cabin, the feel of the...
  23. 1980 Big Ten

    Blower Motor Gasket?

    3M sells “Strip Calk”. Lots of brand alternatives on Amazon.
  24. 1980 Big Ten

    Blower Motor Gasket?

    Mine has wire attached to a motor mounting screw on one end and the firewall on the other end.
  25. 1980 Big Ten

    Blower Motor Gasket?

    Thanks! I wasn’t aware of the dumdum.

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