05-20-2008, 07:47 PM
DeTowman Wrote:Yes they do & it's just an opinion.. as I remember from Ford tech school the reason for the M series was the Cleveland had an oiling problem after about 50,000 miles if the owner did not change the oil regularly or changed different brands all the time the oil returns in the heads would sludge shut...Thus holding the oil in the topend....Ford knew of this problem & redesign it and they changed the name to the Modofied series....
I never knew that. I used to work on them years ago. What did they do to help fix the problem? If I remember right there wasn't much parts interchange between the two.
I could swear there was a 400M.