Don Verity wrote: > The casting #''s for the 63-64 short rams are 2129986 & 2129987. The secondary bores are also larger than the long ram type, although the carbs have the same bore. On an interesting note, I also have a Buick 425 with the dual quad set-up. The carter carbs on these have a larger bore than the 2903's. I'll get the specs if anyone is interested. > 300ly, > Don Try And Remember, The whoosh of September, the carbs on the cross ram 413's ONLY fed 207.4 cubic inches EACH. the 2903's and like sized carbs were only feeding a small motor per carb, they were very capable of handling the 4 cylinders. the stock inline 2x4 mannyfolder intakes were setup where each carb contributed to the full 8 cylinders so the carbs were sized differently. -- Paul Holmgren Mine: 2 57 300-C's in Indy Hers: 05 PT GT R/T HO Hoosier Corps L#6 ------------------------------------ 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/