Jim, I haven't used shrouds in years, nor fans for competition. Get your radiator to a good shop for a thorough reaming. If you want heat, you should take your heater core too. Charley in Muncie 750F, 10551, 11541 -- to be removed from alfa, see /bin/digest-subs.cgi or email "unsubscribe alfa" to majordomo@domain.elided