vortec 5.7l

  1. OhmanSWE

    Cadillac with a 5.7 vortec

    bought a cadillac not too long ago, previous owner put in a L31 5.7L 350 vortec from a chevrolet express van 1997. The previous owner put it in just to test and see if everything works. Now it's time for me to clean it up in the engine bay and make it look nice. Anyone have any tips on what...
  2. B

    5.7 vortec or 5.3LS?

    Ok so the debate that I’m currently having with myself is this. I bought a truck that I am going to be tearing down and doing a full restoration to fix the Canadian salt road damage. I’m building the truck as a work truck. C1500 ext cab. So towing/hauling once in a while and payload. Already...
  3. N

    98 5.7 Vortec Rough Idle and stumbles after running down the road for 20 mins

    Hey everyone I have a 98 Chevy C2500 with the automatic transmission and my truck starts up perfectly fine and runs fine but as soon as I drive it for I'd say about 20 mins easy it decides to idle rough and shake the cab at 550 rpm and if I push the gas it struggles then runs perfectly fine...
  4. xXxPARAGONxXx

    Heater Outlet Hose for 5.7L V8 with 8A5 RPO Code (140A alternator)

    So, I am going to convert from the 105 amp alternator (K60 RPO code) to the 140 amp alternator (8A5 RPO code). Part of the conversion requires using a different heater outlet hose. K60 uses GM P/N 15708635, while 8A5 uses GM P/N 15727640. The problem is that 15727640 is not available anymore...
  5. xXxPARAGONxXx

    Refurbishing Throttle Body

    For the Vortec 5.7L (L31), what all would be involved in refurbishing the throttle body to a like new condition? I can replace the sensors. I can spray it thoroughly with throttle body cleaner. I am looking at some photos online, and there appears to be a bearing that the butterfly throttle...

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