Recent content by Ironhead

  1. I

    Help! Axle Whine...

    It is not that unusual for the rear end to make a whining noise, as long as it is not too loud, I'd just make sure there's enough fluid, and drive the truck.
  2. I

    What are ya'll getting for mpg?

    I have never checked the mileage on my 98 5.7, 4L60E, 3.73, stock tires. I figure I have to drive, so I have to have gas, and "it is what it is", a truck, not an economy car. Knowing the mileage, especially around the city, would be depressing.
  3. I

    1993 GMC C1500 New engine - fuel pump question.

    I had to replace the original fuel pump in my 98 Vortec 350 truck last fall. Apparently they are prone to failure, and this one had only 85,000 miles or thereabouts. I had an AC Delco (Delphi) installed, not cheap though.
  4. I

    Blown Engine. But What Happened

    Hoping you'll pull the pan, and maybe the heads, and let us know what happened...
  5. I

    water Leak in Cab

    Hey Puttssee: I live in Vancouver as well, and had a minor leak into the right side of the cab. I removed the rubber drip rail above both doors, cleaned thoroughly, then cleaned the body metal, and re-installed them. I cleaned both door gaskets, very thoroughly as well. Then, I removed the...
  6. I

    Vortec Heads, need help

    Well, I have an older GMC truck with a 350 and 4 barrel, and a 98 5.7 Vortec, and the vortec starts easier, idles more smoothly, accelerates much quicker, and gets way better fuel mileage. I know that the fuel injection has a lot to do with all that, but most folks reckon the heads are a major...
  7. I

    Sitting Truck fixes

    Old fuel deteriorates, and "varnishes". In some cases, it will coat the intake valve stems and guides, and can even bend or break a pushrod. I've learned this lesson the expensive way! If I were in your situation, I'd find a way to drain the old fuel out, and put in fresh fuel before driving...
  8. I

    Vortec Heads, need help

    I have been told that Vortec heads are prone to cracking after they have been used for a few years. Not sure if this a problem that is more severe with the Vortec heads, but my feeling is that if the heads are used, it would be very smart to have them crack tested before completing the deal. If...
  9. I

    Coolant Temp/Heater Performance Issue

    Background: I have a 69 GMC pickup with the 350 and TH 350 combo. Very nice survivor. I also have a 98 Silverado with the 5700 Vortec/4L60E combo. The 69 warms up fast, and the heater toasts the cab in just a few blocks of driving. The 98 takes forever to warm up, and the heater never really...
  10. I

    Slow Engine Warm up?

    I have come to the conclusion that the engine in the 98 (5.7 vortec) has a cooling system that is plumbed in such a way that it allows circulation of the coolant when the T'stat is closed, and enough water flow occurs to slow down the warm up. of course, I could be entirely wrong, it's been...
  11. I

    Can't get truck to start

    Like all big problems, this one can be broken down into small, easy-to-digest problems. Spark: Plugs, rotor, cap, all easy to check, and no need to buy new ones unless there's a problem with the old ones. Fuel: Does the fuel pump turn on (hum) when the key is turned? There's a fuel pump relay...
  12. I

    Passlock tuned out

    Passlock %(^*#&@(((%#! I carry a small wrench with me at all times so that I can disconnect the battery, count to 10, then re-connect it. That always gets the Passlock to behave itself, and let's me drive the truck.
  13. I

    4L60E Torque Management, Shift Kits and Towing

    Everybody has an opinion (or two) on things like this, right? I'm of the opinion that keeping the trans fluid cool is critical to the longevity of the whole mess. My 69, with the original TH 350 (quite similar in many ways to the 4L60e) has a very large auxiliary trans cooler hung out in front...
  14. I

    High Idle in 1998 Vortec 5.7

    Ha ha! We used to call that an "Italian Tune Up". The idea was to get the engine fully warmed up, then take the car or truck out to the highway, and put it in a lower gear, and floor it to max revs. Even better if you could do this on a long uphill climb. Allegedly cleared up all your...
  15. I

    Plastic or steel

    Good advice so far. My thought is that if you are going to go this far, you might as well check the cam for lift and lobe scuffing, cause this is the time to put in that new roller cam set you've always wanted, right? And, since you have to remove the intake to do this, you might as well have...
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