C1 Exhaust Manifold Stud: Finish/Color

[Justin B.]

Are the studs on these cars (1958) supposed to be black phosphate or zinc/cadmium?

[Thomas H.]

Re: C1 Exhaust Manifold Stud: Finish/Color

Are the studs on these cars (1958) supposed to be black phosphate or zinc/cadmium?

Justin,

FWIW, the exhaust manifold bolts (not studs) on my 60 are black.

Tom

[Joe L.]

Re: C1 Exhaust Manifold Stud: Finish/Color

Are the studs on these cars (1958) supposed to be black phosphate or zinc/cadmium?

Justin------


If you're talking about the 3 studs that retain the forward exhaust pipe to the manifold, I believe they were NATURAL finish (i.e. no finish). This was a really dumb thing for GM to do, but that's what they did.

As I mentioned previously, I recommend stainless steel. These appear like original and REMAIN appearing like original. So, what about judges with magnets? Who cares?

[Justin B.]

Re: C1 Exhaust Manifold Stud: Finish/Color

Joe,
I am talking about those 3 studs. Thanks for your input.