Well, AC has been pretty religiously trashed by many folks. Champion seems to not be what they once were. I have Bosch in the 73 and it seems to do fine. I had the same symptoms as you and swore it was a carb problem or vacuum leak.... Kerry --- Mark Blitman <markblitman@xxxxxxxxxxxxx> wrote: > thanks all for your feedback on my sometimes rough > running engine...i will change the plugs this > weekend..have no idea whats in there now...any > suggestions on the best plug to put in my '74 > 440?...thanks! > __________________________________________________ Do You Yahoo!? Yahoo! - Official partner of 2002 FIFA World Cup http://fifaworldcup.yahoo.com