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  1. J

    Burning Oil At Start Ups

    If he is not using more than a quart every 700 miles, he doesn't need to rebuild the engine, just maybe the heads. Might only need new valve guide seals. J.B.
  2. J

    4.1 mpg?

    Also, are you sure that Edlebrock carb is jetted correctly for your engine? You might want to get some additional jets and experiment, and check the float levels at the same time. J.B.
  3. J

    4.1 mpg?

    If your new tires are bigger around, then in the city your engine is being burdened, as you have the effect of much taller gearing. Good at high speeds on the freeway, but in the city, requires a lot more throttle just to move off. That hurts gas mileage. Also, if you haven't changed your...
  4. J

    Has anyone bought the LMC dash?

    I bought one quite some time ago, and like your's, it doesn't have any metal in it. I used speed nuts where the dash bezel goes, otherwise you can't tighten the two outer corners, and the inner ones might even pull out of place. It has stood up to the sun very well, but when not installed, it...
  5. J

    knocking noise

    With both valves on a cylinder closed, and the lifters on the base circle, the rockers should be 2 turns tighter than zero lash, assuming that your hydraulic lifters are good. Best to set them with the engine running and warmed up, that way you will be able to tell if a lifter is stuck, as the...
  6. J

    knocking noise

    Sounds more like clattery lifters than a knocking sound.
  7. J

    Towing with a 305 V8?

    That changes I would use 4:10 with a 700R4, or even 4:56. If you change to a Turbo 350, then, you probably don't want to go any deeper than 4:10, or else it will be screaming at 60MPH. If you have a stick, you probably want a 4:56, especially if you have Overdrive. Mike
  8. J

    Taking off passenger head about 37 bolts so far

    You probably have a small hole in one or two pistons.
  9. J

    Towing with a 305 V8?

    I would use the 305. Its good enough, it just needs gears.
  10. J

    Diagnosing white smoke on startup

    WHITE smoke or blueish smoke? If it is indeed smoke and not steam, probably your valve stem seals - oil is seeping down the valve stems when the engine is off, and getting burned upon startup. OHV engines are notorious for this when those seals are gone. James
  11. J

    Towing with a 305 V8?

    It can be done, but not with what I think the rear end is. There was no 5 speed automatics, so you have a 700R4, which was not very good in it's early years. I would put a 4:10 rear in it - your 4th gear is Overdrive, so your cruising ratio will be about 2:7 or 2:8 to one, plenty tall for the...
  12. J

    C20 for towing

    I would go with a 400 or a 454 engine and either a 4 speed with a granny 1st or a turbo 400. You should have a 3:73 for a turbo 400, a 4:10 for a stick. Keep in mind though, that Squares are not new vehicles, so be prepared to sink some dollars into it to make it mechanically as good as new...
  13. J

    1983 454 vs 5.3 LS for towing

    I would stay with the 454. The 5.3 is, I think, about 327 cubes, and to make matters worse, is cammed and ported for revs over low-end torque. I am leery about the 700R4, but others say it has been proven to be a good trans. You should look into your cooling system though and have your...
  14. J

    OEM radio speaker

    How much do you want for it? I need the plugs that go into the radio. Mike
  15. J

    OEM radio speaker

    Does anybody have an OEM speaker for a 73 Square? A complete one with the plugs? J. B.
  16. J

    8-track player install

    Problem with modern units is that they don't look right for one thing, and if we have 8 track tapes, we want to be able to play them, for another. J. B.
  17. J

    Deleting the Catalytic Converter

    Yes, it can be removed, as long as it is true that you don't have smog checks. You will have less back pressure, so potentially more top end. Mike
  18. J

    New owner of a Frankenstein K10

    The fact that it originally had a 305 explains the Turbo 350. With that 400, you should have a Turbo 400 trans. The Turbo 350 is for engines under 400 cubes. Carefully inspect the front spring hangers, as this truck originally had independent front suspension, so a previous owner converted...
  19. J

    8-track player install

    You just install it the same as a regular radio. If your truck never did have one, you need to find a wiring diagram. The old Clymer's paperback manuals have wiring diagrams for all the Squarebody trucks. You will need a magnifying glass, as they are pretty small and hard to read. J. B.
  20. J

    Installation manual for RCA 8 track player, model 20C405G

    Hello folks. Does anybody have the installation instructions for an RCA 8 track player, model 20C405G? It has been out of my 73 GMC for years, and I can't remember how to put it back in so it will be secure and properly grounded. I had instructions, but they are long gone, and there are none...
  21. J

    WTF!!!!!!! 75 Monte Carlo CUSTOM CLOUD sell or trade - $25 (PHX North)

    I remember those. They had to change the grille from flat to Veed, or else they had to stop making them. Mike
  22. J

    Towing with a 305 V8?

    If your gearing is right, it will do fine, but if you have that rediculous 2:73 - 1 rear end, it will struggle. You should use 3:73 - 1 gearing. Mike
  23. J

    Ls swap or not?

    This one is fairly new, but later on, will not be worth as much as a stock example. I say leave it alone.
  24. J

    Ethanol Free Or Premium Or Either

    Also, keep in mind that ethanol draws water out of the air. Not much of an issue for a daily driven truck in which you routinely run your tanks dry, but if you only have a single tank, or drive it infrequently, it definitely is an issue. J. B.
  25. J

    1986 C10- Is it reliable enough for a daily driver?

    One thing to think about in really cold climates is to use 2 gauge battery cables, and never ever try to use 6 gauge battery cables on an American-sized engine, meaning over 200 cubic inches. J. B.

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