Restoring - General discussions that span across many different groups of years and models > Drivetrain

Exhaust Manifold

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Stangly:
I media blasted my manifolds some minor pitting but I noticed that there is crack on one of the bolt hole flanges.  The crack is on the opposite end where the tail pipe connects on both manifolds.  Is this something I need to be concerned about or is it merely cosmetic.  I was hoping to use these original manifolds.

C5ZZKGT:
I would say that if the car/engine in your signature line then you should seek out a replacement manifold-standard 302 exhaust manifolds should be pretty easy to come by and be inexpensive as well.
It sounds like your crack will be the source of an exhaust leak......and not just cosmetic.

Stangly:
Thank you for the advice, I'm new to the hobby, I will do some searching and post a wanted add on the site.

C5ZZKGT:
You might also want to keep an eye on Ebay, I'd suggest removing your manafold from the engine so you can compaire it with a replacement to be sure to get the right one.
This is a very interesting hobby to say the least, so Welcome!!

Stangly:
After further investigation I'm questioning if these are the correct manifolds for my car.  This is the casting number I found on them C6OE-9431-F for the LH and C6OE-9430-F on the RH.  If I'm understanding the little I know about casting numbers these are for a 66 mustang, is this correct?  any tips on decoding parts would also be much appreciated.  I have a book that briefly explains it but not to very much depth.  Again thank you for the help!

David,

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