Quote:
Originally Posted by roland bourbeau
I have what i thought was a 1970 455 ho engine. Some charts list it as an ho and some say only 1971 and 1972 are HO.IT is a 1970 xh block with 64 heads.Can someone enlighten me,any imput would be appreaciated.
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My 70 GTO has a Ram Air 455. Motor is listed as 4BBL 455 HO code 344. Ram Air is listed as Air Inlet-HD code 601.