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  1. Mlcdc1

    Hard starting after sitting for a few days

    I have the “hard starting after sitting a few days’ issue on my ‘77 GMC C15. I’ve read through several of the posts and gained a lot of good info but still having the issue. I’ve taken the windowed seat out and replaced it with one that isn’t, I’ve cleaned and put epoxy on the plugs, and made...
  2. Mlcdc1

    Quadrajet Spacers

    Any recommendations on brand and type. If I read things right, there are a lot of different materials they’re made with.
  3. Mlcdc1

    Quadrajet Spacers

    Running a 1977 C15 stock 350, 4 barrel quadrajet and having issues with heat soak. Considering a carb spacer, wondering if that’s an option and if so what recommendations anybody has. Thanks.
  4. Mlcdc1

    Suddenly running rich

    I’m at a loss. I did a rebuild on the quadrajet, had it dialed in pretty good, ran it for a couple of weeks, and then a few days ago, it began to run rich at idle and off idle. The only thing I can say that has changed is the temperatures have gotten quite hot since about 5 days ago. I’m...
  5. Mlcdc1

    Carb Opinion

    Last year i changed out the carb on my 1977 GMC C15 to an edelbrock and threw the Rochester Quadrajet on the shelf. While organizing the work space I ran across it and got the crazy idea to do a rebuild on it, having never torn into it before. I’d really welcome your thoughts on a good rebuild...
  6. Mlcdc1

    TH 350 shift issues

    FYI - all the shift issues were corrected by installing a new governor. I torn the old one apart and it looks like when I had it at the the transmission shop they drill out the plastic gear to fit the retaining pin and there were some very small shavings that got down in the valve. I had checked...
  7. Mlcdc1

    Wheel/Tire Opinion

    Decided to have the original rims blasted and powder coated white and use the original dog dish hubcaps. Sooooo, the next question is which tire - Cooper Cobra radial or BF Goodrich Radial? Interested to hear opinions.
  8. Mlcdc1

    Progression Distributor

    Just wondering if anyone is running their 350 with the progression distributor with the Bluetooth file capabilities. I haven’t seen any recent updates on its reliability/durability. Thoughts?
  9. Mlcdc1

    Wheel/Tire Opinion

    Opinions?
  10. Mlcdc1

    TH 350 shift issues

    thanks for the input. I’ve changed the vacuum modulator a couple of times and installed a new rigid line from the manifold to the modulator and measured the vacuum pressure at the manifold and the modulator and it read the same. I have not installed a vacuum gauge and driven it to see if...
  11. Mlcdc1

    TH 350 shift issues

    Still having shift issues with TH350 that won’t shift 2nd-3rd when it‘s warmed up, usually 15-20 minutes of driving. I added a trans cooler and new vacuum modulator with no change. i’m about ready to buy a new governor just to see if that fixes the problem. I’ve given up on the shop that did...
  12. Mlcdc1

    Timing W/ Manifold vacuum

    Finally got a chance to work on the timing again - here’s what I’ve got timing curve: 750rpm=14 degrees 1000rpm=15 1250rpm=19 1500rpm=24 1750rpm=26 2000rpm=26 3000rpm=26 16...
  13. Mlcdc1

    Wheel/Tire Opinion

    Thanks for all the suggestions/recommendations. I’m still in the process of making a decision. I’m currently running with 1” wheel spacer-like the look with the tire set out a bit so have out in the mix the idea of completely new set of rims with less backspace and get rid of the spacer - a lot...
  14. Mlcdc1

    Wheel/Tire Opinion

    Pick up a set of old school rally’s 15x7 and the tire shop recommended going with a 255/60 R15. opinions??
  15. Mlcdc1

    Wheel/Tire Opinion

    I’m open to all suggestions. I leaning towards a street tread tire (BF Goodrich or Cobra?), a little wider and definitely not taller and a little shorter would do ok also. Thanks for the clarification on what the numbers mean.
  16. Mlcdc1

    Wheel/Tire Opinion

    I‘d like to put a wider tire on my 1977 GMC C15 and looking for recommendations/suggestions. I’m currently running 235/75 R15 on factory steel wheels. I think I’d like to keep the appearance close to original and would welcome recommendations for a good/reliable source for wheels and tire size...
  17. Mlcdc1

    Timing W/ Manifold vacuum

    You’re right - couldn’t hurt to try it. Thanks!
  18. Mlcdc1

    Timing W/ Manifold vacuum

    Thanks for all the help. I worked on setting the timing this weekend and here is where I ended up. Took it for a test drive and no noticeable ping, seemed to run good. idle 650 = timing 12 mechanical advance = 32-12=20 idle 650 timing with vac on manifold vac = 28 3000 RPM with manifold vac = 44
  19. Mlcdc1

    Timing W/ Manifold vacuum

    Thanks for the advice. I’m a rookie when it comes to timing so this may be a dumb question but how do you tell when the mechanical advance comes in?
  20. Mlcdc1

    Timing W/ Manifold vacuum

    I have a 1977 stock 350 with an Edelbrock 1906 carb and would like to switch from ported vac to manifold vac after reading through the posts. the timing is currently set at 10 BTDC. Would I have to reset the timing if I make the switch and if so what would be a good starting point? Thanks for...
  21. Mlcdc1

    New guy from NE Indiana

    Welcome from Fort Wayne
  22. Mlcdc1

    Fuel pressure regulator

    Thanks for the recommendation - currently running this one from summit - https://www.summitracing.com/parts/sum-g3032b I don’t have a return line so I just plug one of the out lines.
  23. Mlcdc1

    Fuel pressure regulator

    Looking for a recommendations for fuel pressure regulator for my 1977 GMC C15 stock 350 engine, mechanical fuel pump, and edelbrock 1906 AVS2 carb. Using one currently that doesn’t seem consistent. Set it at 4.5 and it seems to fluctuate between 3.5 and 6.5 - less than 1 yr old. Thoughts?
  24. Mlcdc1

    TH 350 shift issues

    What’s the possibility of it being a bad valve body unit?
  25. Mlcdc1

    TH 350 shift issues

    I had back to the rebuild shop and they checked it out and said there was no problem. not sure I’ve got enough understanding to check pump pressure myself so may find another shop and get a second opinion. After doing some further reading, what’s the possibility that the governor is failing?

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