304 heads
Printed From: TheAMCForum.com
Category: The Garage
Forum Name: AMC V8 Engine Repair and Modifications
Forum Description: AMC-made V8 engine mechanical, ignition and fuel from basic repair to high-perf modifications
URL: https://theamcforum.com/forum/forum_posts.asp?TID=96821
Printed Date: Apr/18/2024 at 8:26pm
Software Version: Web Wiz Forums 12.03 - http://www.webwizforums.com
Topic: 304 heads
Posted By: Hurst390
Subject: 304 heads
Date Posted: Oct/13/2018 at 8:25am
Swirl port 304 heads..I wonder how many sets made and if they made into a production vehicle?   ------------- SC/Hurst Rambler 11.62 120 100% Street Legal |
Replies:
Posted By: Jmerican
Date Posted: Oct/13/2018 at 11:02am
| Dang, lookie there... |
Posted By: jpnjim
Date Posted: Oct/13/2018 at 11:44am
You end up with the coolest stuff 
------------- 71 P-code 4spd Javelin/AMX some Jeeps and some Fords |
Posted By: Boris Badanov
Date Posted: Oct/13/2018 at 11:49am
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Sir Harry Ricardo would be proud. It would be interesting to flow them. ------------- Gremlin Dreams |
Posted By: jcisworthy
Date Posted: Oct/13/2018 at 4:43pm
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Are you sure they are not someones handy work? ------------- Specializing in dyno services, engine building, and cylinder head porting rbjracing.com Phone Number 518-915-3203 |
Posted By: Jmerican
Date Posted: Oct/13/2018 at 5:59pm
| jC might be right. Pretty smooth. |
Posted By: Hurst390
Date Posted: Oct/14/2018 at 7:30am
Mine came from a guy that had a back door to AMC racing stuff but he didn't remember anything about them. ------------- SC/Hurst Rambler 11.62 120 100% Street Legal |
jcisworthy wrote:Posted By: Hurst390
Date Posted: Oct/14/2018 at 7:34am
------------- SC/Hurst Rambler 11.62 120 100% Street Legal |
Posted By: 304-dude
Date Posted: Oct/14/2018 at 8:08am
|
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. ------------- 71 Javelin SST body 390 69 crank, 70 block & heads NASCAR SB2 rods & pistons 78 Jeep TH400 w/ 2.76 Low 50/50 Ford-AMC Suspension 79 F150 rear & 8.8 axles Ford Racing 3.25 gears & 9" /w Detroit locker |
Posted By: jpnjim
Date Posted: Oct/14/2018 at 10:14am
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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  ------------- 71 P-code 4spd Javelin/AMX some Jeeps and some Fords |
Posted By: Boris Badanov
Date Posted: Oct/14/2018 at 11:38am
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The 301 Pontiac was a bad motor. I owned one. At least they burned oil prematurely. ------------- Gremlin Dreams |
Posted By: jpnjim
Date Posted: Oct/14/2018 at 11:51am
My brother had a nice car (for the time), 1981 G-body Grand-Am, with a 301. He bought a 4bbl intake for it and I nearly fell over when I saw it just had 4 ports. Horrible idea, that whole engineering team should have been sent to the mail room to finish out their careers. ------------- 71 P-code 4spd Javelin/AMX some Jeeps and some Fords |
Posted By: Boris Badanov
Date Posted: Oct/14/2018 at 2:39pm
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301s are there to remind us that the 304 aint a bad motor... ------------- Gremlin Dreams |
Posted By: scott
Date Posted: Oct/14/2018 at 2:44pm
Horrible idea, that whole engineering team should have been sent to the mail room to finish out their careers. [/QUOTE] The engineering team was promoted & went on to design the Pontiac Aztek.
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Posted By: jpnjim
Date Posted: Oct/14/2018 at 2:49pm
I'm glad to hear their punishment fit the crime!  ------------- 71 P-code 4spd Javelin/AMX some Jeeps and some Fords |
Posted By: Class Guy
Date Posted: Oct/14/2018 at 3:46pm
3233324 casting number was used on 79-81 304s. ------------- Addicted to acceleration. Owner and Admin for www.classracerinfo.com |
Posted By: 304-dude
Date Posted: Oct/14/2018 at 4:13pm
I had a feeling it was a later years casting. Maybe it was intended for Jeep division, since AMC had dropped the V8 on their cars after 79. ------------- 71 Javelin SST body 390 69 crank, 70 block & heads NASCAR SB2 rods & pistons 78 Jeep TH400 w/ 2.76 Low 50/50 Ford-AMC Suspension 79 F150 rear & 8.8 axles Ford Racing 3.25 gears & 9" /w Detroit locker |
Posted By: SC397
Date Posted: Oct/14/2018 at 6:06pm
I had two sets and they both came out of AMTech. The first set went on a 304 stroker that I built but, I will look at the second set to see if they have the same part number. There is some more pictures in this thread: http://www.ifsja.org/forums/vb/showthread.php?t=95564&page=3
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Posted By: jcisworthy
Date Posted: Oct/15/2018 at 3:37am
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I see the shapes better now with the other pictures. I would not use those heads on my lawn mower. That is a terrible choked up runner if I ever saw one. ------------- Specializing in dyno services, engine building, and cylinder head porting rbjracing.com Phone Number 518-915-3203 |
Posted By: SC397
Date Posted: Oct/15/2018 at 4:01pm
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The 3 cylinder heads that I have are embossed with 3233344-1 or -2 and have 304 valves in them. I don't know what the part number was on the pair that I put on the stroker engine but this is what Greg said at the time. "These heads are AMC R&D 360
heads. They had 1.787†intake valves and 1.68†exhaust valves
installed, and a swirl-port design. AMC was testing them out to see how
emissions and MPGs could be improved with a lean-burn swirl-port
design. I had hardened valve seats installed on the exhaust side, so
that the smaller 1.50 diameter valve head could be used." I assume he is correct on the valve size but I can't remember. As mentioned all 5 cylinder heads came out of AMTech so I assumed that they were all Research and Development heads. https://flic.kr/p/29jJfqU" rel="nofollow">
 https://flic.kr/p/29jJfqU" rel="nofollow - IMG_0927 by https://www.flickr.com/photos/149168736@N07/" rel="nofollow - Rick Jones , on Flickr |
Posted By: Ken_Parkman
Date Posted: Oct/15/2018 at 5:01pm
| Send one home with RR. |
Posted By: SC397
Date Posted: Oct/15/2018 at 5:11pm
|
Sorry Ken, he is home by now. I will get one to you to check out one of these days. |
Posted By: purple72Gremlin
Date Posted: Oct/15/2018 at 6:20pm
| Now I am curious. I have 2 1979 304s. And one 1978.. |