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  1. I

    OEM cylinder head castings - 1977 K10

    If anyone is wondering, I've came from a street racing and class-racing with rulebooks background. My mentality on modifications is not average. I don't have an issue with knowing what works best or how to make power. I was raised on "sleepers". I would rather people see a Quadrajet, iron...
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    OEM cylinder head castings - 1977 K10

    You are correct in that I am not familiarized with all of the different markings and their associated castings. I am with double humps, the single, Vortecs, etc... the desirable heads. I started with the 5.0 efi Ford cars and went to LS1s. Could tell you anything you wanted to know about those...
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    OEM cylinder head castings - 1977 K10

    North GA, but not interested in double humps. If I end up changing from what was stock it will be to Vortecs or Dart/Brodix heads down the road. 186s won't be hard to get rid of, though
  4. I

    OEM cylinder head castings - 1977 K10

    GM started the lightweight castings in late 74. I did not know how to spot the differences from an external view. Blocks, either. Thanks a bunch for the pictures!
  5. I

    OEM cylinder head castings - 1977 K10

    Ive never messed with the smog-era heads, but the castings usually have giveaways on the front face of the heads as to what they are, such as the double/camel humps. They're known as that due to outside casting markers, not the internal ones. The other part of it is OCD (I guess).
  6. I

    OEM cylinder head castings - 1977 K10

    The two castings that are pulling up that seem to be possible are 882 and 624. I don't know if they were getting both for different packages, which I can't see why they would, or if maybe they were getting different castings depending on the plant assembling them. I do know that according to...
  7. I

    OEM cylinder head castings - 1977 K10

    I've got a pretty good grip on what's available and what is good and what isn't. I know whatever came on these is going to be sh*t and know that they came with 1.72" intake valves. This is just a fun sleeper experiment for me. I expect a bone stock looking AND sounding engine that will produce...
  8. I

    OEM cylinder head castings - 1977 K10

    What makes you say 1972? Those were used on Goodwrench crate engines, too. Thank you for checking, btw!
  9. I

    OEM cylinder head castings - 1977 K10

    Mild, stock appearing setup is what I'm shooting for. Will be doing a lot of hidden work. Goals aren't as high as modern engines, but will be much more than OEM.
  10. I

    OEM cylinder head castings - 1977 K10

    Yes. It's an 80s model thin block as well. Being replaced with a 4 bolt main 010 block. Wanted matching heads to go with it.
  11. I

    OEM cylinder head castings - 1977 K10

    I've done this, I know what I have , and that what I have is not original. Mine are 80-up heads and I'm doing a restoration and cannot find what the 77s wore.
  12. I

    OEM cylinder head castings - 1977 K10

    I guess I shouldve stated that, . The engine would be a 350.
  13. I

    OEM cylinder head castings - 1977 K10

    Can anyone tell me what the stock casting numbers are for a 1977 K10. The traditional lists are of no help. Will likely require someone having a factory 77 engine to check or have checked prior. Thanks.
  14. I

    Rally wheel weight

    No problems with what you've posted. I'm usually a blunt typer and I hope I've not came across rude either in us having different opinions. I mean no illness in attitude. My opinion, off of what I've read from your end is yours is more weighted towards the handling and braking end. My issue is...
  15. I

    Rally wheel weight

    Disagreeing is your rright. I'm curious as to what experiences you've had on personal vehicles that you've spent a lot of time in. The first time I noticed this was my very first vehicle. A bone stock fox body 5 speed. A wheel swap only that was 6lbs lighter per corner, same tires was the...
  16. I

    Rally wheel weight

    Not to be argumentative but 2 or 3 pounds even per corner can be felt quite easily. Just my experience. Maybe I'm more sensitive than most. The slower the vehicle is, the more pronounced the effect is as well.
  17. I

    Rally wheel weight

    Talked to Wheel Vintiques today and they told me the 6 lug versions they sell in 15x8 were 30lbs even. They claim they use OEM centers so I'm assuming if they're using oem centers in oem sized then they are using oem wheels altogether, just powdercoated. I forgot to ask though, so an assumption...
  18. I

    Rally wheel weight

    Exactly what the title indicates. Looking for rally wheel weights. 15x8 6 lug k10 wheels. Hubcaps and trim rings welcome if someone has those too. Thanks
  19. I

    Best quality tail light lenses

    Ended up ordering today. Went with new GM lenses from Year One, new housings and gaskets from Classic Industries, and new screws for housing and lenses from Classic Parts of America. Was going to get the housings from brothers as they're stamped USA made but they're out of stock til the 28th...
  20. I

    Best quality tail light lenses

    Looking for lenses, gaskets, and screws. I have the housings With that said, I am shooting for an oem look. Nothing aftermarket on the style. Brothers and Year One I believe have GM housings plus tails, although one of them also states its a reproduction. Not sure If it's a wording error or...
  21. I

    Best quality tail light lenses

    Q Thanks
  22. I

    Best quality tail light lenses

    Interested in purchasing tail lights and likely all lenses while I'm at it for a new k10 project. Have a 77 GMC K15. What I'm wanting to know is who is selling the best or highest quality lenses right now. I have catalogs from LMC, NPD, Classic Parts, Classic Industries and Brothers...

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