Jerry From LA wrote: The "M" stands for "Midland." Another example of Ford naming the motor for the location of the factory."Modified" or "Midland" or "Michigan", it all equals suck.
Knurled wrote:darkbuddha wrote:IIRC, there's no difference between 4v and 2v Windsor heads, no matter the year. The '69-'70 351 Windsor heads got slightly bigger valves, but otherwise ain't much better than any other Windsor head. I think the E7 heads actually flow better.
The E7 heads didn't exist yet...
/old
Huh? I wasn't constraining my observation to any particular time period, just a generalized comparison between all Windsor family heads (which would include 302W and 351W). In any case, I was wrong... or more accurately, mistaken. I guess I was thinking about GT40 vs. E7 Powerhead stats I'd seen. The fact is that stock E7s suck a bunch and '69-'70 351W suck slightly less, GT40/P/Y are pretty okay, ported E7 are pretty good. Here are some good charts that show flow info for lots of popular Ford heads: http://www.allfordmustangs.com/Detailed/630.shtml
