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Author Topic: '68 327/275 exhaust manifold #s  (Read 5618 times)
68vert
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« on: August 14, 2008, 08:13:06 AM »

I'm getting conflicting information from my research on the manifolds I need. I don't really care if I have the 100% correct # casting, I just want it to have the right measurements, etc... to work with my factory exhaust and alternator brackets. Car will not have A.I.R.

I think the LH # is: 3892679 but I've seen two different listings for the RH # 3893608 and 3840912. Can anyone confirm which numbers I need and the differences between the two #s I have for the RH?  Can I use either for the RH?

Thanks in advance, Brian
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lakeholme
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« Reply #1 on: August 20, 2008, 08:14:29 PM »

The P&A shows 3892679 as a service part # for 68 Camaro, 327 w/4BC, LH, w/AT.
It shows 3893608 as a service part # for 68 Camaro, 327 w/4BC, RH, w/AT.
I suspect that the two differing #s may be original vs replacement, but I'd let Ed or somebody else verify that...
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Phillip
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Ed B
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« Reply #2 on: August 20, 2008, 10:57:02 PM »

I wish I could help, but exhaust manifolds are not my forte. CBTN is kind of confusing and the P&A only shows service parts like Phil said.

Maybe someone else?

Ed
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lakeholme
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« Reply #3 on: August 20, 2008, 11:27:12 PM »

Well, CBTN & Hooper do speak of 3840912  for RH 68 Camaro 327/275 w/o A.I.R. and CBTN also speaks of 3893608.
And both speak of 3892679 as LH, as does the P&A.

Ed is right... it is confusing....
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Phillip
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68vert
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« Reply #4 on: August 21, 2008, 08:12:03 AM »

Thank you for the replies guys!! It seems to me 3840912 and the 3893608 SHOULD be interchangeable. I just hate to ebay a set, pay for shipping, and then have them be wrong.  I can't seem to find a set of these things, and it's starting to get frustrating...

Thanks again, Brian
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Ed B
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« Reply #5 on: August 21, 2008, 09:46:57 AM »

Brian, if you're really not interested in the numbers, then you can go with either one. Both fit, so that's not a problem.

Ed
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68vert
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« Reply #6 on: August 21, 2008, 11:07:30 AM »

Thanks Ed, that's the info I was looking for. It's not an original engine car, I'm just dressing up a crate engine to look like a 327/275. So, I care about function and fit and not the numbers at all. I just wish there was some kind of readily available interchange manual or something similar I could look at to see what numbers will function correctly.

Again, thanks for the help. Brian
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tom
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« Reply #7 on: August 22, 2008, 02:33:12 AM »

my interchange book calls for 3893608 right and 3892679 left
usage
64-68 chevelle 282, or 327 without AIR
67-8 camaro 302, 327, 0r 350 without AIR
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69 X11 Z21 L14 glide
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68vert
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« Reply #8 on: August 22, 2008, 08:10:31 AM »

Thanks Tom!!  DARNIT!!  I just missed a set on ebay listed from a '65 Chevelle. According to your book they would have worked for me. They looked exactly right in the pictures, but the casting #s were not legilble. I was scared to bid on them because I wasn't sure they would work. Looks like they would have. 

Thanks again for the info. At least now I know these castings were used on more vehicles than just the 7 & 8 Camaros. Gives me a little more hope to find a set...   Thanks guys for the help, Brian
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lakeholme
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« Reply #9 on: August 22, 2008, 09:23:15 AM »

Brian,

According to the P&A, you can add 68 Chevy IIs to your search for 3893608 and 3892679 to your search.
The passenger service #s are not the same.
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Phillip
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sebastien
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« Reply #10 on: August 22, 2008, 11:23:56 AM »

My 68 327-210 without AIR has a 3892679 on the left.The right side is unreadable.
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Sebastien 68  327 rag top
68vert
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« Reply #11 on: August 25, 2008, 08:03:14 AM »

Thanks again for the responses guys. Can someone look up 3834947 for me? I found a set from a '65 Chevelle and they have this number on the LH and the correct # I need 3840912 on the RH.

Again, not concerned about numbers, just correct function so the factory exhaust, heat shields, etc... will work. Thanks in advance, Brian
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Ed B
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« Reply #12 on: August 25, 2008, 08:52:32 AM »

Brian, the 3834947 was used on the 64-66 Chevelle 283 and 327. It should work for you.

Ed
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