They are 4 bolt exhaust manifolds as used on some Dodge trucks with hemi engines. I can remember hunting them at junkyards from truck engines. From what I know they were used on the hi performance 392s in 1957 but may work on all hemis. Anyway that is what we were hunting them for. We bought a set at Hershey some years ago quite reasonably. They were used on hemi truck engines and maybe boat engines in 1957 and maybe other years. Regards, Nancy Kramer Webmaster http://www.americandreamcars.com Free Color Picture Ads for Collector Cars One of the Ten Best Places To Buy or Sell a Collector Car on the Web At 04:51 PM 2/11/2006, Rich barber wrote: >Does anyone recall an article about Kiekhaefer or others using Dodge truck >exhaust manifolds on the 331 C-300 engine? Also, I could use some >confirmation of proper exhaust piping size for the C-300. 2" all the way? >And was this different from a NY'er or Imperial with dual exhaust? > >C-300'ly, >Rich Barber >Brentwood, CA (Spring has sprung here--trees in blossom--75 degrees in the >shade at 2PM) > > >Hello 300 Fans - Phil Irish here. When I made my "Kit Kar 300" from my 69 >Newport coupe, I stumbled on a set of these manifolds to add to my TNT >rebuild >of the 440. Having done the entire engine in one effort, it is difficult >to >say how much they add, but the whole engine response is noticeably better. >I >do know Carl K. of early 300 racing fame, believed good exhaust manifolds >and pipes were worth 50 HP on the 392 cu in engine. They are impressive to >see >on the engine and I've never failed to get questions about them when the >person looking had any engine knowledge at all. I do not have the part >numbers >but will say I've never seen them offered at a swap meet, or on ebay. I >suspect finding a complete TNT engine would be the only way to get a set. >I only >know of one of those - and I don't think it is for sale. Good luck in your > >search ! > > All the Best 300ing, > > Phil - snowy >38F outside Memphis . > > > > > >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 >Yahoo! Groups Links > > > > > > > > > > > >-- >No virus found in this incoming message. >Checked by AVG Anti-Virus. >Version: 7.1.375 / Virus Database: 267.15.4/255 - Release Date: 2/9/2006 -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.1.375 / Virus Database: 267.15.4/255 - Release Date: 2/9/2006 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 Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> 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/