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304 heads

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Hurst390 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Hurst390 Quote  Post ReplyReply Direct Link To This Post Topic: 304 heads
    Posted: Oct/13/2018 at 9:25am
Swirl port 304 heads..I wonder how many sets made and if they made into a production vehicle?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jmerican Quote  Post ReplyReply Direct Link To This Post Posted: Oct/13/2018 at 12:02pm
Dang, lookie there...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jpnjim Quote  Post ReplyReply Direct Link To This Post Posted: Oct/13/2018 at 12:44pm
You end up with the coolest stuff Clap
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Boris Badanov Quote  Post ReplyReply Direct Link To This Post Posted: Oct/13/2018 at 12:49pm
Sir Harry Ricardo would be proud.

It would be interesting to flow them.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jcisworthy Quote  Post ReplyReply Direct Link To This Post Posted: Oct/13/2018 at 5:43pm
Are you sure they are not someones handy work? 
Specializing in engine building and cylinder head porting

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jmerican Quote  Post ReplyReply Direct Link To This Post Posted: Oct/13/2018 at 6:59pm
jC might be right. Pretty smooth.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Hurst390 Quote  Post ReplyReply Direct Link To This Post Posted: Oct/14/2018 at 8:30am
Originally posted by jcisworthy jcisworthy wrote:

Are you sure they are not someones handy work? 
When I first got them I thought they may have been welded up. Once I started to klook at them I came to the conclusion they are cast that way. And Rick Jones has a set too.
Mine came from a guy that had a back door to AMC racing stuff but he didn't remember anything about them.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Hurst390 Quote  Post ReplyReply Direct Link To This Post Posted: Oct/14/2018 at 8:34am
Originally posted by Jmerican Jmerican wrote:

jC might be right. Pretty smooth.
They have had a die grinder taken to them but the added material has been cast in.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 304-dude Quote  Post ReplyReply Direct Link To This Post Posted: Oct/14/2018 at 9:08am
Of all the wee bits you come up with time to time through the years, I wonder if you have a wee army of AMC elves in your garage.

Not familiar with the casting number, but it may be a late 69 or early 70 production. Unless because of NASCAR mandating no bigger than 366cui, they may have tried some lower range torque heads for road coarse tests. Donno just seems like an odd duck, especially not having any known history.

Wonder what the flow is on them. Probably would be great heads for a turbo 304 if left in current valve arrangement.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote jpnjim Quote  Post ReplyReply Direct Link To This Post Posted: Oct/14/2018 at 11:14am
It would make sense that AMC would take a look at lots of different port arrangements and designs,
including swirl port technology.

Look at what other manufacturers did to try to improve low RPM torque in their smaller V8's,
like the swirl port 318's,
and the (horrible) siamesed intake ports on a Pontiac 301.
^even a Turbo couldn't fix that one Confused
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was Green/green now T/A red w/blk leather

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