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  1. mtbadbob

    Tach not registering

    I'm wondering if those require or have a tach filter?
  2. mtbadbob

    Tach not registering

    I pulled this cluster from a '78 gas Blazer, looks the same as pic from jimmy78. Sold it to a member on this forum.
  3. mtbadbob

    Quadrajet Choke and Fast Idle Linkages

    The front pull off should somehow be in contact with the green lever, at the end of the adjustment screw I think? This should open the choke as the engine warms & pulls vacuum. The AJ tab is just a weight to release the choke with the blip of the throttle when engine warms. It's been a while...
  4. mtbadbob

    Help with malfunctioning cluster.

    It's easier to just unhook speedo & pull the whole unit out. The lights just twist into the back of the housing onto the circuit board.
  5. mtbadbob

    Help with malfunctioning cluster.

    I'm not sure about the 84 models, but I believe the sending unit wire on my '87 is a medium brown color, so I guess you could call it tan. It should have a single spade terminal in a plastic clip about 1" long and it comes around the back of the engine and drops down behind the exhaust manifold.
  6. mtbadbob

    Any recommendations for a new dash bezel?

    I picked a nice one from a bone yard. I painted the fuel gauge & clock opening, and took a silver paint pen and re-did all the raised edges, then I bought a new brushed aluminum overlay from LMC and it looks brand new. I may have an extra one that isn't too bad, but some of the earlier trucks...
  7. mtbadbob

    Fuel Valve replacement (I made it worse)

    Yeah, the hoses going to the valve are short & tough to get them on & tight for sure!
  8. mtbadbob

    Dim Dash Lights

    Looks like you have a bulb out on the left of the speedo!
  9. mtbadbob

    Fuel Valve replacement (I made it worse)

  10. mtbadbob

    Fuel Valve replacement (I made it worse)

    Yes, one switch stay's centered and rocks over to the tank selected but returns to center. The other, is a typical rocker that stays in position to the selected tank. As I said, the factory harness (if it's still there) dictates what switch you need as the 3 prongs on the back of the switch are...
  11. mtbadbob

    ‘84 C20 454 in Nevada

    I agree, I'm kind of a purist myself! Although, I've owned 3-6.0L's and would love that power in my '87!
  12. mtbadbob

    ‘84 C20 454 in Nevada

    Beauty is in the eye of the beholder! If it's a C, then I'd rather have a shorty myself. I've had my fair share of C lwb's, in fact I've never owned a swb out of over a dozen Chevy trucks, including a few K's. I guess my first truck was a '53 3100 shorty, but that's been the only one. Now, I...
  13. mtbadbob

    Fuel Valve replacement (I made it worse)

    Are you sure that both tanks aren't 1/2 full?? Also, make sure you get the correct rocker switch, but I think the factory harness plug dictates what kind you need as the pin location is different.
  14. mtbadbob

    Help with malfunctioning cluster.

    Why would you pull off the speedo needle to get at the circuit board??
  15. mtbadbob

    Help with malfunctioning cluster.

    The sensor by the distributor is a "pressure sensor", the one by the filter is sending unit for the gauge.
  16. mtbadbob

    What have you done to your square lately??

    That is a steal, looks clean!
  17. mtbadbob

    What have you done to your square lately??

    Installed my new JET performance EPROM today, and honestly, I can't tell the difference! I also re-spliced the connector on my oil sending unit as it was hanging on by only a few strands. I did NOT stabilize my pressure reading, and I had changed the sending unit last summer. Thursday I changed...
  18. mtbadbob

    Chevy Replacement Grill with 350 emblem option

    That surround is 1979 only. The only year for round eyes with the signals incorporated into the surround. Also, my uncle had a '77 K20 w/400, and he bought it new that way. I believe that 1977 could have been the last year of the engine displacement in the grille. I don't recall seeing them in...
  19. mtbadbob

    Unusual radio issue

    Back in the day when I was really into car audio, Pioneer was the only systems I would run. That being said, yellow wire was ALWAYS illumination. You'd hook it up to the headlight switch and the unit would illuminate when the lights were on, and also you could dim the unit with the instrument...
  20. mtbadbob

    What’s IT Worth? (Post all “what’s it worth threads here)

    SOLD!!!!!
  21. mtbadbob

    86 GMC High Sierra K2500 in Nixa MO

    Nice truck! Welcome from Montana
  22. mtbadbob

    What is this?

    That makes more sense, and my Monte probably had a blown resistor that I didn't even know I had back then, as I was only 18!
  23. mtbadbob

    What is this?

    Years ago, I had a '76 Monte and I only had low speed fan control. I unplugged the relay and ran a jumper in the harness to give me high speed all the time. That being said, I believe the relay is responsible for the speed variables, as 12v is going into it, and it seems to change the fan speed...
  24. mtbadbob

    What is my new squarebody??? Need help!

    It's very possible that they just used the sheet metal off the Mil truck and just painted it. There are some really good painters out there that'll replicate a factory paint job to a t. Who knows, maybe the box is original, and the po just used the cab w/vin and painted to match. Several...
  25. mtbadbob

    ‘84 C20 454 in Nevada

    Well, I completely agree with what you said, but if you're wanting a sporty look & resale, the short C10's will generally bring more money. If you want the best riding, best towing truck out there, get a long box dually crew cab! It's like driving a school bus but offers the best of everything...

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