The discussions regarding timing/ octane/ induction issues caused my relatively small brain to wonder if anyone has experience running aluminum heads on these Chrysler B and RB engines with “high” compression. With the conventional wisdom being they reduce compression ratio by one or two points for purposes of octane knock do they make the 10.5 cr engines more pump gas friendly? What are your impressions of their effect on power and drivability? . Image removed by sender. Image removed by sender. [Non-text portions of this message have been removed] ------------------------------------ Posted by: "Rick Vitek" <rpvitek@xxxxxxxxxxxxx> ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to bob@xxxxxxxxxxxxx or go to https://groups.yahoo.com/neo/groups/all/manage/edit For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang ------------------------------------ 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: Chrysler300-digest@xxxxxxxxxxxxxxx Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo Groups is subject to: https://info.yahoo.com/legal/us/yahoo/utos/terms/