twice as many side links, making the chain twice as strong , and less possible stretching In a message dated 12/18/2008 7:51:08 A.M. Central Standard Time, Y1TopBanana73@xxxxxxxxx writes: I need to ask a stupid question...what defines a timing chain as "double roller"? Is it that the width of the chain is 2 smaller links wide instead of 1, and the cam & crank sprockets have rows of teeth that are 2 wide instead of one? Also, what makes this setup so much better/stronger than a single chain? Thanks in advance Bill M 65 Coronet 500 'vert **************One site keeps you connected to all your email: AOL Mail, Gmail, and Yahoo Mail. Try it now. (http://www.aol.com/?optin=new-dp&icid=aolcom40vanity&ncid=emlcntaolcom00000025) [Non-text portions of this message have been removed] ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html.