I've had great success with White Vinegar. Pour some into each cylinder thru the plug hole, and let it sit while you disassemble the motor. If it takes a while before you get the heads off, add some every day or so. Worked real well in some old 8N tractors I have. Good luck, Ray Jones Mena, AR 71953 On Mar 14, 2008, at 9:53 AM, rdrnr6970@xxxxxxx wrote: i put wd40 in the motor then,was going to move onto diesel fuel,as some car freinds had suggested.but while talking with a older mopar motor guy who works on his sons dragster,he told me not to keep forcing the crank as i could brake something.and i wouldnt be able to replace this block.thanks...john [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/