>does anyone know what letter the 351 cleveland "ho"engine is
>for the vin in a '72 ranchero? would it be the m code rated
>at 285hp? thanks.
According to "The American V-8 Engine Data Handbook 1949-1974" (p138), the 1972 HO engine was "R" code. It does not show a "M" code for 1972. If it is wrong and there is a "M" code, it is likely a 351C 4V (not CJ, Boss, or HO)...