Water pump bolts which sealant?

Discussion in 'Small Block Tech' started by koosh, Apr 19, 2021.

  1. koosh

    koosh Well-Known Member

    72 350......For the 4 long bolts, which sealant on the threads do you prefer?
    Permatex Form a Gasket#2?
    Permatex Blue RTV silicone sealant?
    Pretty sure ANTISIEZE goes on the short 1"bolts?
     
  2. LARRY70GS

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

  3. koosh

    koosh Well-Known Member

    So you like this Loctite over the 2 Permatex?
     
  4. LARRY70GS

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

    Yes. It's the right thing to use.
     
    Schurkey likes this.
  5. koosh

    koosh Well-Known Member

    Larry, do I just apply to threads, or the shaft of the long bolts?
    I assume there will be some "gooped up" old sealant still in the holes?
     
  6. LARRY70GS

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

    Just the last 4 threads of the long bolts that go into the water jackets. Antiseize on the small bolts. Doesn't hurt to put it on the shanks, just don't go nuts with it.
     
  7. koosh

    koosh Well-Known Member

    Thanks again
     
  8. Mark Demko

    Mark Demko Well-Known Member

    I put a light smear of RTV on the last 1/2 " of threads
     

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