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Replacement exhaust manifold

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Old Sep 13, 2023 | 12:06 PM
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Default Replacement exhaust manifold

There is a stress fracture showing on the driver's side exhaust manifold on my 1971 350/270.

It isn't causing a problem yet, but I plan on replacing it in the next couple of months before it is a problem.

Does anyone have any recommendation for a particular brand to buy as a replacement? Or a particular website to buy from?

Thanks in advance!
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Old Sep 13, 2023 | 12:31 PM
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Have you thought of having yours welded.
A GOOD shop that uses the corect technique and material can do it.
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Old Sep 13, 2023 | 12:44 PM
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You could probably find a nice used on pretty easy as there was nothing special about it.......

Jebby
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Old Sep 13, 2023 | 02:21 PM
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You can buy a brand new reproduction manifold for about $200 from any of the Corvette parts vendors. And, as Jebby notes, you can buy used ones pretty cheap - there is nothing special about the stock cast iron manifold. A 5-minute eBay search should net you several options: there is a 1971 Vette driver's side exhaust manifold for sale there right now for $125. It took me 23 seconds to locate it, which is less time than you spent posting this thread and reading the answers....

Last edited by lars; Sep 13, 2023 at 03:11 PM.
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Old Sep 13, 2023 | 10:05 PM
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Originally Posted by KFO
There is a stress fracture showing on the driver's side exhaust manifold on my 1971 350/270.

It isn't causing a problem yet, but I plan on replacing it in the next couple of months before it is a problem.

Does anyone have any recommendation for a particular brand to buy as a replacement? Or a particular website to buy from?

Thanks in advance!
Interesting, I just went through this exact exercise with my '71 350/270 when replacing my driver's side exhaust manifold.

I wound up getting a Repro from Corvette Central. In less than 500 miles, it already looks exactly like the original passenger side manifold.


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Old Sep 13, 2023 | 11:06 PM
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I found two correct part numbers 350 OEM Manifolds on EBay that were less costly than the ones sold by Corvette Vendors. They were pretty rusty so I had them powder coated for $125. Just be careful if you buy ones that have the studs still on the manifolds, there is a trick to get them out without breaking them off. Use a Mapp Torch and then apply a wax candle once the manifold gets hot.
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Old Sep 14, 2023 | 09:42 AM
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Thanks! I wasn't sure if there was any difference in quality of different repro brands. On Parts Geek, I saw several different brands (SKP, Dorman, TRQ, Davico, DIY Solutions, Replacement, Autopart Premium) but it seems like Dorman was the brand I saw on several other sites as well.
I will look into both OEM on Ebay and repro on the different Corvette sites.

Much appreciated!
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