Best plugs for HEI distributor in 350 engine

Discussion in 'The Bench' started by Schu3507, Aug 16, 2017.

  1. Schu3507

    Schu3507 Well-Known Member

    Changing plugs. Got a rebuilt 1968-1970 350. Has a 4 barrel edlebrock and HEI distributor cap rotor.
    What's best plugs to run?
     
    Schu3507, Aug 16, 2017
    #1
  2. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    What makes you think you are using the wrong plugs? What are you using now? Do you know anything about the rebuild? Need more information.
     
    LARRY70GS, Aug 16, 2017
    #2
  3. Schu3507

    Schu3507 Well-Known Member

    The engine was a total rebuilt from Titan Engines in Fla. Has a three year warrantee and two left
    I'm judging by way carb and rest rest of engine was set up the PO was prob running wrong plug. Was told to run a certain plug wt HEI distributor? Plenium plugs sound right?
     
    Schu3507, Aug 16, 2017
    #3
  4. Schu3507

    Schu3507 Well-Known Member

    I haven't slept in few days so please if I'm wrong it's very possible
     
    Schu3507, Aug 16, 2017
    #4
  5. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    So what plugs are in there now?
     
    LARRY70GS, Aug 17, 2017
    #5
  6. rkammer

    rkammer Gold Level Contributor

    Well, for normal usage and if you have an HEI distributor, factory stock plug is AC R45TSX gapped at .060. With a points distributor it's R45TS gapped at .030 (.040 in '73 and '74). For high performance usage you might consider a colder plug. This is with factory iron heads. What plugs are in it now?
     
    rkammer, Aug 17, 2017
    #6

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