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  1. supspt454

    What to do with pre cat and after cat 02 sensors

    97 GMC Sierra factory 5.0L exhaust uses a small down pipes with O2 sensors in each bank, then into a Y pipe with a pre cat O2 and after cat O2 for a total of 4 sensors. Truck has a 383 with mid length headers, 3" to 2.5" header collectors with O2 bungs for each bank. Head pipes will be 2.5"...
  2. supspt454

    Edelbrock ETec Head Spark Plug Question

    Quick question about what spark plugs to run with Edelbrock Etec 170 heads on a Vortec 383 OEM ignition system. The heads call for a 14mm 3/4" reach 5/8" hex washer plug. I know the factory plug specs on the Vortec are a .060 gap with a heat range of 5, so I have been trying to find a...
  3. supspt454

    Push rods

    What pushrods is anyone running for a 383 with Edelbrock heads and 1.6. I know factory is 7.200. I have a push rod length checker and almost to the point to measure. Just trying to get an idea what y’all using. Thanks.
  4. supspt454

    Stereo Install Kit

    Does anyone know if a company still makes an install kit to use a single din chassis and a 1/2 din EQ? I know the factory stereo is a 1.5 din chassis and they used to sell install kits to fit the standard single din stacked with a 1/2 din EQ. I’m building an old school Rockford Fosgate system...
  5. supspt454

    Smeding Performance 383 in a 97 C1500

    Hello all. Jasper L31 long block, 4000 miles, lost a rod, and knocked a hole in the block and pan. Ordered a new 383 short block from Smeding Perfomance. Just looking for extra power for this extended cab short box truck daily driver. Planned to go with factory Vortec truck intake, upgraded...
  6. supspt454

    LS Swap Transmission Question

    I have a 1997 GMC Sierra 1500 with a rebuilt 4l60e. I lost a rod in the L31 and have a change to swap in a 2002 5.3L. I have done some searches on here and google but I may not be wording my question correctly. I know a 0411 from an Express with L31 will work, but can that be re-flashed to...
  7. supspt454

    Hello from the Sooner state.

    Hello. Shawn here from Oklahoma. Hoping to gain and share knowledge on the forum. Daily driver is a 97 GMC C1500 Sierra SLE called the “BRC”.

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