vortec 350

  1. Alan M

    L31 Intake Spacer

    Hello group, I'm looking for a Taylor Cable 11011 Vmax Intake Spacer. If there is anyone that has one and like to sell it I'm willing to buy it. Thank you
  2. B

    No-Start Vortec 350

    Hello everyone! This is my first time posting in a Forum like this, I would usually just find the information I need and it ends up working out for me. Anyway, I have a Vortec 350 (L31) out of a 1997 K1500 and put it into my 1986 c10. This was my first time working on a vehicle so YouTube was a...
  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

    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...
  5. Jesse_Wenting

    Running a Vortec 5L with a 5.7 PCM..

    Been using the PCM from the parts truck the 5L was in for a few months now, but it thinks I'm geared to 3.73 and am running 254/75R16s (30.5s). The 5.7L PCM (which is now back in the truck with the 5L engine and running) obviously thinks the engine is bigger, but is correctly programmed for the...
  6. wyn97

    '97 Vortec to Holley EFI

    I am eyeballing a future project involving a 4bbl L31 intake and a Holley Terminator 4bbl kit with transmission control, and even adding in the Holley ignition parts if I don't feel like integrating the Vortec distributor. That should take care of the engine and the transmission control. What I...
  7. Jkenney_

    97 vortec running rough, need help

    Looking for some advice, I had an intake manifold gasket go bad so took it apart to replace them. Ran fine before I did this, put in new fuel filter, distributor cap and rotor, plugs and wires while I had it apart, now it won't idle and sounds like theres a bad misfire. I can get it started and...
  8. 9

    5.7 Vortec cold tap/knock HELP!

    So about a year ago, my head gasket blew on my 99 Classic. Had the heads professionally redone and had the lifters, rockers etc out. Fixed it up nice. Since then I have had a real bad cold start tap/knock. Engine didnt exceed 100⁰C when the gaskets went. The truck has about 330,000km (about...
  9. S

    96 C2500 dies after 10 minutes then never starts..

    Hey all! I am actually posting this for my neighbor. He has a 96 C2500 ECLB with the 350. He bought it cheap with a blown motor, put another one in it, got it running. Well a couple of times it would randomly cut off, then start right back up. Now, it only runs for about 10 minutes after letting...

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