Hello to those 300 enthusiasts with a special interest in the 57-58 300's I have an interest in correct numbers, along with correctly identifying 300 components. So I was wondering if anyone could shed some extra light on the following: I have noted from the Chrysler "Part number codes" of the period: 1957-58 New Yorker, Imperial & Crown Imperial 392 Head, was "Part number" 1737809, whilst its Casting number was "1731528". The casting number is clearly different to the part number, and this is understandable, since many common castings can have different machine operations making them ultimately a different part number. Thus 1957-58 "300" 392 Head was "Part number" 1828122, whilst it's casting number was also 1731528? Although one of the Hemi rebuild books calls up a casting number 1735282?, which I have been advised was a Dodge Truck head casting number? It would seem to me that different machine operations for the 300 heads, normally common casting number 1731528, would bring rise to the 300 heads with removable exhaust valve seats, thus "Part number" 1828122, While the Regular 392 heads may not have had removable exhaust valves seats, so their common casting number 1731528, became part number 1737809. Gang, can anyone else shed some light on how to readily identify standard 392 heads to 300 392 heads from looking at them? Since the casting numbers may be the same? Along with any other differences in these beasts? Also would any guys with snaps of their engine rebuilds confirm casting numbers on the 392 300 heads for the different years 57-58? Also I believe the inlet manifold for the '57 2x4 is "Part number " 1733477, whilst the '58, or some of the '58 2x4's is Part number 1826105. Was the 58 a lower manifold than 57? Is this the difference?, and what were the respective casting numbers if not the same. Did any '58 300D's find themselves with '57 carburetors? Some food for thought, love to get some feedback. Best Regards Sean in OZ. 300D, 300B IMPORTANT: This email is intended only for the person(s) to which it is addressed and may contain confidential or legally privileged material. Any dissemination or other use of or taking of any action in reliance upon the content of this email by person(s) other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the email from any computer. Opinions and other information in this email that do not relate to the business of my employer are not given nor endorsed by it. Unencrypted email is not secure and may not be authentic. If you have any doubts as to the contents please telephone to confirm. Spray Nozzle Engineering / Reel - Tech and its related entities accept no responsibility for changes made to this email or its attachments after transmission from Spray Nozzle Engineering / Reel - Tech and its related entities and do not guarantee that this email or attachments are virus or error free. If you do not wish to receive further emails from us, please forward this email to sales@xxxxxxxxxxxxxxxxxxx [Non-text portions of this message have been removed] To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: mailto:Chrysler300-digest@xxxxxxxxxxxxxxx mailto:Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/