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AC brackets and headers

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Old Jul 31, 2013 | 08:02 PM
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Default AC brackets and headers

Anyone have a picture of how to modify AC brackets on a 1978 with headers?
Thanks!
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Old Jul 31, 2013 | 10:52 PM
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The only thing you need to do on the 78 is make up a spacer(or stack of washers)the thickness of the original exhaust manifold minus the thickness of the header flange to support the side of the main bracket.
Everything else will bolt right up.
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Old Jul 31, 2013 | 11:53 PM
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So that is bolted to the header flange if I am seeing correctly?
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Old Jul 31, 2013 | 11:59 PM
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So that is bolted to the header flange if I am seeing correctly?
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Old Aug 1, 2013 | 09:23 AM
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Yeah, you use the same long bolt with the extended stud that was originally in that forward location with the original exhaust manifold.
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Old Aug 1, 2013 | 09:50 AM
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that is correct on my 80 as well. it has threads to lock down the header and then threads on the other end to lock down the compressor. Great fun to work on these cars. They smoked a lot of pot coming up with these workarounds...
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Old Aug 1, 2013 | 01:09 PM
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Originally Posted by KapsSA
Yeah, you use the same long bolt with the extended stud that was originally in that forward location with the original exhaust manifold.
Thanks! I will have to figure out the bot size since this is all replacing from PO.
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Old Aug 1, 2013 | 01:26 PM
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Originally Posted by KapsSA
Yeah, you use the same long bolt with the extended stud that was originally in that forward location with the original exhaust manifold.
Thanks! I will have to figure out the bolt size since this is all replacing from PO.
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Old Aug 1, 2013 | 01:56 PM
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i threads into the Head just like the headder bolts. It will be the same thread they have... i don't know what size that is but if you match it to one of them you will be fine. The long part can be any size you want ... should be plenty of car shows this weekend where you could go look at one in person and see what we are talking about...
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Old Aug 1, 2013 | 04:34 PM
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You could always use a length of 3/8-16 threaded rod.
Screw the rod in in place of the header bolt, slip your spacer over that and lock it down with a nut. Install the bracket and lock that down with another nut.
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Old Aug 1, 2013 | 08:06 PM
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Thanks guys! I will give it a try this weekend.
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