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Rozwell View Drop Down
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Joined: Apr/05/2020
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Points: 103 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Rozwell Quote  Post ReplyReply Direct Link To This Post Topic: Headers
    Posted: Jan/10/2021 at 11:52am

I’m checking out headers for 1968 AMX, specifically the Hooker 7901. I like the Hookers because they are 16 gauge steel instead of 18 gauge. The problem is, they list them for 1968-1973. Surely they can’t fit both types of exhaust ports. Has anyone used the 7901 headers? Any chance that someone has a photo of the engine side of the port? Also, is there any interference issue with the automatic transmission fill tube? Thanks
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Boris Badanov View Drop Down
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Points: 4209 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Boris Badanov Quote  Post ReplyReply Direct Link To This Post Posted: Jan/10/2021 at 2:57pm
A dog leg header will work with a square port head.
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Rozwell View Drop Down
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Points: 103 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Rozwell Quote  Post ReplyReply Direct Link To This Post Posted: Jan/13/2021 at 12:12pm
So the port mismatch doesn’t cause an exhaust leak?
Anyone have a photo?
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SC397 View Drop Down
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Points: 5476 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SC397 Quote  Post ReplyReply Direct Link To This Post Posted: Jan/13/2021 at 1:42pm
Like I mentioned before, you will probably have to weld them up then port match them to a gasket.
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A.R. Headers View Drop Down
AMC Nut
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Joined: Feb/28/2017
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Points: 268 		Post Options Post Options   Thanks (0) Thanks(0)   Quote A.R. Headers Quote  Post ReplyReply Direct Link To This Post Posted: Jan/13/2021 at 2:59pm
Rozwell,

We offer a specific header flange for the older non dogleg ports. We also use .065 wall tubing but our headers are also made using high quality 100% USA sourced 304 S/S. You will never need to replace them. Fit and ground clearance is as good as it gets and we even offer an exhaust system specifically for the AMX that mates directly to our headers. Let me know if you'd like more information on what we offer. Thank you.

Nick
American Racing Headers
100% Made In USA Since 2005
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Have2SC's View Drop Down
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Points: 1257 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Have2SC's Quote  Post ReplyReply Direct Link To This Post Posted: Jan/13/2021 at 8:40pm
Originally posted by Rozwell Rozwell wrote:

I’m checking out headers for 1968 AMX, specifically the Hooker 7901. I like the Hookers because they are 16 gauge steel instead of 18 gauge. The problem is, they list them for 1968-1973. Surely they can’t fit both types of exhaust ports. Has anyone used the 7901 headers? Any chance that someone has a photo of the engine side of the port? Also, is there any interference issue with the automatic transmission fill tube? Thanks

I am running hooker 7901 square port headers without issue. Those are only for 67-69 square port applications although summitt and jegs list it for 68 and up. Cant help you on the automatic tranny fill tube issue.  
1971 SC360 Hornet 4 speed   1970 Javelin 390 4 speed "Base Model" 1967 Rambler 220 X code 343 4 speed
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Steve_P View Drop Down
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Points: 3805 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve_P Quote  Post ReplyReply Direct Link To This Post Posted: Jan/14/2021 at 10:18am
Originally posted by SC397 SC397 wrote:

Like I mentioned before, you will probably have to weld them up then port match them to a gasket.


This. I've run doglegs headers on square ports and they leaked a little because of the mismatch. Just lay a dogleg exhaust gasket over a square port and see what you think. No matter what you buy you should plan on some welding and matching if you want them to seal properly.

edit- I have no experience with the AR headers, I'm speaking of Hooker and Heddman needing work.

Edited by Steve_P - Jan/14/2021 at 10:20am
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A.R. Headers View Drop Down
AMC Nut
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Joined: Feb/28/2017
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Points: 268 		Post Options Post Options   Thanks (0) Thanks(0)   Quote A.R. Headers Quote  Post ReplyReply Direct Link To This Post Posted: Jan/14/2021 at 10:26am
Originally posted by Steve_P Steve_P wrote:

Originally posted by SC397 SC397 wrote:

Like I mentioned before, you will probably have to weld them up then port match them to a gasket.


This. I've run doglegs headers on square ports and they leaked a little because of the mismatch. Just lay a dogleg exhaust gasket over a square port and see what you think. No matter what you buy you should plan on some welding and matching if you want them to seal properly.

edit- I have no experience with the AR headers, I'm speaking of Hooker and Heddman needing work.

Steve,

There is absolutely no modifications required to run our headers. The flanges are matched perfectly to the specific ports the headers are ordered for. I can assure you all of that. 

Nick
American Racing Headers
100% Made In USA Since 2005
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AMXFSTBK390 View Drop Down
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Points: 3489 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AMXFSTBK390 Quote  Post ReplyReply Direct Link To This Post Posted: Jan/14/2021 at 2:07pm
No one has addressed the question if the headers clear the automatic transmission fill tube on a AMC automatic transmission. 
Questions are powerful tools...what's in your toolbox?
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67 Marlin View Drop Down
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Points: 877 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 67 Marlin Quote  Post ReplyReply Direct Link To This Post Posted: Jan/14/2021 at 4:59pm
The BW auto tranny filler tube in the pan will need to be modified to clear. The tube can be bent to clear. Or, the tube can be removed, weld up the hole and move it's location a few inches fore of the original location. A mini-starter (I went with the RobbMc one) really helps, too. I used Remflex gaskets, no leaks after a few thousand miles so far.

Edited by 67 Marlin - Jan/14/2021 at 5:04pm
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