The Standard 327 HP rating in Full Size cars '65 and back is 250 (altho in '65, many if not all, had the smaller Double Hump heads). The Standard 327 HP rating in '66 to '67 was 275 (These engines have a Q-J carb). After doing a little research it looks like in '68 they did reduce back to a 250 HP engine, as well as having the 275.
Ed, Post your engine code on the pad on the front of the engine and we can determine exactly what you have, altho with the Q-J carb I'm going to say you have a 275 HP 327.
Last edited by 62BillT; 10-18-2008 at 02:37 AM.