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  1. 9

    Diagnosis help

    So myself and a buddy put a new GM L31 crate engine and a rebuilt transmission into my 98 Silverado. The motor has good power and transmission functions well. Timing is set properly and is reading - .02 between 1000-1200 rpm. However, at highway speeds the truck seems to kind of quickly buck or...
  2. 9

    Replacement key

    What is the best/easiest way to get a replacement key for a 98 Silverado? Am I correct in assuming I can't just have a key made at the hardware store because of PASSLOCK?
  3. 9

    Can't select 1st gear

    I just installed a new GM L31 crate and had a 4l60e built to go behind it. Everything went smoothly and the truck runs great, the Chevy Performance Ramjet 350/H383 cam that I installed is a nice upgrade to the stock L31. I am however having a small problem with the 4l60e, I cannot select 1st...
  4. 9

    Intake manifold pitting

    Is this gonna be a problem? I bought these off Ebay today help streamline my engine/trans swap project. It has been "cleaned and painted as a part the inspection process only". The pitting and corrosion around the coolant ports have me a bit concerned. I will be using Fel-pro MS-9800 gaskets...
  5. 9

    Fluids for new GM L31

    I just received my new GM L31 (2 bolt) and I'm wondering what the experts (you guys) would run for fluids. Surprisingly the paperwork was not specific. I'm mostly interested in oil, coolant and ATF. Thanks
  6. 9

    Engine replacement-list of components/sensors to replace

    I'm going to be pulling the factory 5.7 (315,000mi) from my 98 Silverado and dropping a crate motor in soon. I'm trying to put together a parts list and begin purchasing/preparing for the swap so that I can do this as quickly and efficiently as possible. This is the crate I'm leaning towards but...
  7. 9

    Broken teeth flex plate

    So I have a 98 k1500 5.7 with 315K on it. I've had the truck for a couple of years and it has always run good and reliable. Yesterday I tried to move it to begin oil change and coolant flush. When I tried to start it a horrible clanking noise came from the starter so pulled it off and inspected...
  8. 9

    '98 cruise control problem

    It seems that the cruise control only works when the truck is cold. I replaced the multiswitch a few months ago and the cruise worked fine after that but within the last month stopped working except when I first jump in and drive. Any ideas?
  9. 9

    ATK HP74

    http://www.high-performance-engines.com/chevy-350-vortec-base-engine-315hp-p/hp74.htm I'm looking at this for a 98 K1500 5.7. The original engine has 313K and it's a bit tired.. Anyone have any experience with ATK or this particular engine? I'd like to hear anyone's thoughts about either. Thanks.

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