The M in your VIN indicates 351 Windsor 4bbl. The 351 Cleveland did not come out until 1970.
It cant be a windsor though has nothing looking like a windsorThe M in your VIN indicates 351 Windsor 4bbl. The 351 Cleveland did not come out until 1970.
Alright good to know that I dont have a 351m thanks im going to try and look at my casting numbersQuickz, This is a confusing issue. Commonly accepted knowledge indicates that there was no "Cleveland" 351ci engine in the '69 Mustangs. Two things (in my opinion) might argue for a '69 351C. First is a number of references to the '69 Cleveland in Mustang reference books. Some specify vin code M as Cleveland, most simply do not refer to either/or; just M-code as a351-4V. Second is the knowledge that Ford was preparing the Boss 302 for release, which we all know had "Cleveland" heads on a "Windsor" 302. So if the heads were available, how can anyone believe that a few 351C-4V '69 Mach Is aren't running around?
The 351M was not a factor until '75. Again, this is my opinion only, and I am sure there are other members that can reply to your inquiry also.