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Old 12-03-2013, 02:33 AM
roland bourbeau roland bourbeau is offline
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Default 1970 455
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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Old 12-05-2013, 09:43 PM
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dlyle dlyle is offline
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Originally Posted by roland bourbeau View Post
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.
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.

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1970 GTO 455 HO Ram Air 4 speed Convertible
Last edited by dlyle; 12-05-2013 at 09:57 PM.
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