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  1. carfanatic63

    AC Troubleshooting 1976 GMC C15

    I'll give that a shot. I'll need to get a new condenser in order to allow that though. Thanks for your help!
  2. carfanatic63

    AC Troubleshooting 1976 GMC C15

    It's in the evaporator core. New valve too. I think I may have figured it out finally! There is about a 4in gap between condenser and radiator. No electric fan. I think that is causing it to not dissipate heat correctly. When moving and driving, it cools great. Stopped it gets hot and...
  3. carfanatic63

    AC Troubleshooting 1976 GMC C15

    Pictures of system for reference. Anyone have any ideas what I'm missing?
  4. carfanatic63

    AC Troubleshooting 1976 GMC C15

    Update. I found out I had the discharge and liquid lines flipped on the condenser. Dumb mistake but you live and learn. I now have #8 discharge going to top of condenser. #6 liquid line going to evap core. And #10 suction line to compressor. Problem is, after putting 24oz of r134a in, it still...
  5. carfanatic63

    Which dually - 8.1 vs pre-DEF 6.6?

    8.1 all day.
  6. carfanatic63

    New to the square body scene

    Welcome from Texas! As others have said, rebuild your current carb. If it's original and a Quadrajet, they aren't that difficult to rebuild. I got a kit from quadrajet power that included everything and they have videos on how to rebuild so you can follow on step by step easily. I'm also a...
  7. carfanatic63

    tailgate/cab band trim repair

    I know the tailgate panel is anodized so polishing won't work unless you remove the anodization. I used a cheap spray in oven cleaner, let it sit for a minute, then brushed it with steel wool. I clear coated afterwards and mine is holding up fine. No clue on removing dents. I'm not a body man...
  8. carfanatic63

    What have you done to your square lately??

    Mine were just double stick taped on so some gentle prying and alcohol got them
  9. carfanatic63

    WTB '83/84 GMC dual headlight grille

    If I hadn't just got everything switched to GMC on my truck finally, I would sell you the one I just picked up.
  10. carfanatic63

    What have you done to your square lately??

    Do the magnaflow straight through mufflers count as glasspacks? If so, I've had them on my truck for a decade and love them. The sound matches the era of these trucks so well.
  11. carfanatic63

    What have you done to your square lately??

    It's a new switch. Is there a way to test it? When filling it up, it does cycle until it has more freon. Then it freezes up at the expansion valve but remains cool (not remotely cold) on the drier. Pressures also tend to be high in high side relative to where it should be compared to low side
  12. carfanatic63

    What have you done to your square lately??

    Finished installing fender badges and dash badge. Officially showing GMC rep now! Also bonus pic of engine. Still struggling with AC freon not flowing through orifice tube properly and freezing up. May just give up and take it to a shop at some point. Will be the first time this truck sees a...
  13. carfanatic63

    Has anyone used an Edelbrock Rochester Quadrajet carburetor?

    I've been using an edlebrock quadrajet 1901 for nearly a decade. Runs fantastic. Like all quadrajets, you need to fine tune a little bit for your application but once you have it set up, you are golden.
  14. carfanatic63

    What have you done to your square lately??

    A new windshield always looks so good. Finding on marketplace is a crazy find. Congrats!
  15. carfanatic63

    What have you done to your square lately??

    Got the grille, hood emblem, and tailgate panel on. Now on to the wheel caps and fender badges. Then interior badges
  16. carfanatic63

    What have you done to your square lately??

    That's cool! Whenever I swap to the 70s front end, guess this could help fund it. I'll post a pick this afternoon of it on the truck. Got it mounted yesterday but it's in the garage so I couldn't get a good picture
  17. carfanatic63

    New to the forum, but not to Squarebodies...

    Welcome!
  18. carfanatic63

    What have you done to your square lately??

    What year is it exactly? '84? I'm just curious since I've got a 76 with an 80s front clip. Figured this would hold me over until I do a front end swap in the future.
  19. carfanatic63

    1970s Rally wheel center cap insert decal

    I had no clue the 77's had brown decals. 77 parts seem to always be special. I do have a set of black oem ones I'll be selling here soon. Swapping mine to GMC as I finally got the parts to do so
  20. carfanatic63

    What have you done to your square lately??

    Been working on converting my GMC to actually have GMC badging. Picked up a grille and clean tailgate panel for $130 from a swap meet and restored the grille. Workong on restoring the tailgate panel right now too but no pictures of it
  21. carfanatic63

    Muffler recommendations

    I've been running dual magnaflow 10416 mufflers behind my 454 for years and I'm happy with them. Small rumble at idle and cruising around town. Minimal drone, loud when you stand on it.
  22. carfanatic63

    1999 454 carb swap. best street carb, 600? 650? 750? CFM

    People might disagree but a good quadrajet is hard to beat. Flows 750-800 cfm, great street manners, plentiful, etc.. Been running one on my 454 for 10 years (intake, headers, exhaust) and it's been fantastic. Starts below freezing, hot, never bogs, great power and throttle response. It's got...
  23. carfanatic63

    AC Troubleshooting 1976 GMC C15

    Thanks for your insight Hunter! Hoses are all routed correctly to the best of my knowledge. It's a brand new condenser off LMC so I believe it should be the newer style. I let it sit for a day and next day it blew COLDA for about 5 minutes then pressures got high again Correct. Compressor...
  24. carfanatic63

    AC Troubleshooting 1976 GMC C15

    Orifice tube was fine. No debris. Just oil blocking it. I had pag 46 in it. Maybe that caused it
  25. carfanatic63

    AC Troubleshooting 1976 GMC C15

    Well, I went ahead amd evacuated the system and pulled a vacuum. Going to flush the system and refill with oil again and freon at a later date. Maybe change the evap core as well even though it doesn't leak.

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