Questions on Choke Housing/Gasket

Discussion in 'Chassis restoration' started by 12lives, Oct 13, 2021.

  1. 12lives

    12lives You die once. You live every day.

    What finish does the choke housing have on a 70 455?

    Also, a source for the gasket that goes between the stove and the manifold.
     
  2. Smartin

    Smartin antiqueautomotiveservice.com Staff Member

    For a 70 there is no gasket since it is not open to the exhaust crossover

    They are gold/yellow plated
     
  3. 12lives

    12lives You die once. You live every day.

    Thanks - how about the gasket for a 72 455? It is a 72 motor, I just wanted it to look like a 70. I did not realize they made a change to the design!
     
  4. Smartin

    Smartin antiqueautomotiveservice.com Staff Member

    I usually just make sure both surfaces are as flat as I can get them, then use red RTV.
     
    buick64203 likes this.
  5. buick64203

    buick64203 Just plum crazy Staff Member

    X2
     
  6. 12lives

    12lives You die once. You live every day.

    Thanks!
     
  7. LARRY70GS

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

    Or, just buy some exhaust gasket material and make your own gasket. It isn't hard.
     
  8. gstewart

    gstewart Well-Known Member

    I have two of those "chimney gaskets" that i will sell one to a customer. I will list them in "for sale" section.
     
    TORQUED455 likes this.
  9. 12lives

    12lives You die once. You live every day.

    Thanks Gerry, I will take one.
     
  10. copperheadgs1

    copperheadgs1 copperheadgs1

    Choke housing were gold as mentioned. I say it’s imperative to use a heat resistant gasket on 71-72 style intake. RTV is a joke and will blow out in five minutes. That’s exhaust gas!!! It can come into the interior and kill you!!! Check Cars listings. Someone was making those gaskets. There is a cup that needs to go in first under the choke housing. Original there was an asbestos gasket. I had an NOS cup with asbestos gasket in place years ago.
     
  11. 12lives

    12lives You die once. You live every day.

    Note that the cup/stove is stainless. Bolts and cover are mild steel.
     
  12. copperheadgs1

    copperheadgs1 copperheadgs1

    As rusty as the cups are when I take them off not sure it was stainless? NOS cup I had was plated zinc I would say.
     
  13. 12lives

    12lives You die once. You live every day.

    Interesting - on this 72 Riv motor the cup is non-magnetic. I assume it is stainless.
     
  14. copperheadgs1

    copperheadgs1 copperheadgs1

    Could be? I scuba dive and I have seen stainless spoons and forks on the bottom of the ocean rusted.
     
  15. copperheadgs1

    copperheadgs1 copperheadgs1

    The NOS cup I had wasn’t shiny like stainless
     
  16. copperheadgs1

    copperheadgs1 copperheadgs1

    I’m wondering if cup is aluminized like good exhaust systems? Not sure if those are magnetic?
     

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