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  1. rich weyand

    Another Gauge Cluster Question or 3

    ^^^ x2
  2. rich weyand

    Another Gauge Cluster Question or 3

    If he has no resistor, I would use a spare bulb in the lead. Any bulb. All the bulbs in our trucks are low enough resistance to run a temp gauge up to HOT.
  3. rich weyand

    Another Gauge Cluster Question or 3

    Yes, of course, if you know it is the gauge wire. But in checking to see if a wire IS the gauge wire, a bit of discretion is in order, and can't hurt.
  4. rich weyand

    Another Gauge Cluster Question or 3

    I would run the wire to ground through a 150 ohm resistor. If the gauge moves up to the middle of the range or so, that's the right wire. If it's the wrong wire, 150 ohms will keep you from shorting out whatever else it connects to.
  5. rich weyand

    Another Gauge Cluster Question or 3

    No need to drain the fluid when you replace them Have it standing by with some teflon paste on the threads. Back the other one out until it is just holding on, then hold the new one in your right hand while backing out the old one with your left. When the old one comes free, just thread the...
  6. rich weyand

    Another Gauge Cluster Question or 3

    And this is in the 78, right? Because the connector on the end of the green wire is the "clip on sideways to a pin" type used through 1978, and the later sending units had a 1/4" spade connector (like most of the rest of the wiring) as used from 1979 on. You can use that thread I pointed to...
  7. rich weyand

    Another Gauge Cluster Question or 3

    A correction here. There were two resistance curves used on our trucks for temp gauges. Up to 78 it was one gauge curve and sender, 79 on it was different. See the thread I pointed to just above.
  8. rich weyand

    Another Gauge Cluster Question or 3

    The correct sending unit depends on year, in particular the year of the gauge. It is the gauge and the sending unit that have to match -- they have to agree on "how many ohms equals how many degrees" -- so it depends on what year is the cluster you swapped in. Here's a thread on another...
  9. rich weyand

    mild 350 build

    When I was growing up in the late 1960s, the most popular girl was the daughter of the guy who owned the chrome shop....
  10. rich weyand

    mild 350 build

    Oh, you will, because it's not just the engine. It's also the carb, the intake manifold, the headers, the exhaust system, gaskets, etcetcetc. Figure another grand before it's over, maybe 1500. As for exhaust, 2.25 duals is plenty for any naturally aspirated 350 to 5000 rpm. The only time...
  11. rich weyand

    mild 350 build

    Here's a build for you: GM base 350/260hp crate engine #10067353. Stage 2 Qjet from SMI Carbs on a dual plane Edelbrock 2101, a Comp Cams 12-300-4 or 12-230-2 cam with matching lifters and springs, Hooker 2453 (for 4WD) headers, and 2.25" duals out the back through some free-flow mufflers (I...
  12. rich weyand

    Alternator question

    Any 10SI or 12SI alternator will plug directly in. I replaced my 10SI with a 94-amp 12SI. http://forum.73-87chevytrucks.com/smforum/index.php?topic=28215.0 Summit has aftermarket 12SI alternators up to "the sky's the limit" amperages...
  13. rich weyand

    No start

    ^^^ x2 It doesn't take much of an air leak to screw up the idle.
  14. rich weyand

    double din stereo

    You can also get a single-DIN that has a flip up screen. http://www.crutchfield.com/g_182350/In-dash-GPS-Navigation.html?tp=20212##&nvpair=AG_Size|FFSingle-DIN The most important thing is to have a USB port. I ripped my CDs to mp3, and have 255 CDs on a single 32GB USB plugged in on the truck.
  15. rich weyand

    Engine break in

    No, you just need to keep dust and dirt and water from getting in there, while allowing air to get in to be drawn through by the carb through the PCV valve.
  16. rich weyand

    Engine break in

    There are two differently sized rubber grommets. They fit in the same hole, but have different IDs depending on whether they are for the breather or the PCV valve.
  17. rich weyand

    double din stereo

    Single DIN is easy. Double, not so much.
  18. rich weyand

    Aux tank usage?

    I think the 88 had the motor driven valve. They're not cheap. Pollak makes the good ones. See if this looks like yours. The older solenoid valve only had one wire to it. This should have five...
  19. rich weyand

    Thermostat Gauge

    Careful, most aftermarket senders are a bad fit for the gauge. The sender is independent of engine, but the sender and the gauge have to agree on how many ohms equals how many degrees. This page says the correct unit for the 1988 is a GM #8993146: http://gmpartswiki.com/getpage?pageid=56466...
  20. rich weyand

    Thermostat Gauge

    Just below the center of this pic, the temp sender is the brass colored doodad just behind the #1 header tube. You can also see the wire, routed between the valve cover and the Y-nuts. It is black there, because I had to splice on an extension after some PO buggered it.
  21. rich weyand

    Thermostat Gauge

    PNK/BLK and YEL is to the idle stop solenoid on the carb. The temp gauge sender wire is DK GRN. My temp sender is between the #1 and #3 spark plugs on the driver's side head. It routes along the lower edge of the valve cover with the spark plug wires.
  22. rich weyand

    Engine break in

    Note that ZDDP is consumed during the oil change period. It gets bonded to the wiping surfaces by pressure, then wears off, but it was chemically changed during the process and so is not rebonded. So the ZDDP level in the oil declines from the time it is put in until the next oil change. That...
  23. rich weyand

    Engine runs bad after 30 minutes of driving

    Geez, they tell you no vac advance on a 383HT?! That's wrong. You could have some bad plugs. If the ceramic is cracked, it can open up when they're hot, arcing to the head, and close back down when they are cold. They can come cracked new out of the box, or they can crack in service. Which...
  24. rich weyand

    Engine runs bad after 30 minutes of driving

    No, the instructions for the 350/290 crate actually say the engine was designed for no vacuum advance, which is a load of hogwash. Hook up the vacuum advance to manifold vacuum, not ported vacuum. If it's an Edelbrock carb, that's the driver's side port, not the passenger side port. OK, so...
  25. rich weyand

    Engine runs bad after 30 minutes of driving

    That's a GM screwup. Hook up the vacuum advance. BTDT. Then set the base timing at least 12*BTDC.
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