I've been talking to a guy who is looking to sell his '67 Firebird which he says is an original 400. He hasn't had a chance to send me the casting number but has told me that it has a YH engine code. Anybody know if this would be a correct engine? On www.teufert.net/pontiac/engcodes.htm it does show a YH code 400 for 1967 with auto tranny and 4 bolt main but no HP rating and nothing saying its for a Firebird. Anybody verify this is a correct engine for a Firebird and maybe know HP rating from factory?
