@@coreysharp9794 actually it doesn't. Ford part numbers books from the 70's and 80's listed it as a 351 Modified, but other than that Ford only used the "M", and that only on the 351 and not the 400. It has never been listed by Ford to mean Michigan in any Ford publishing. The 400, as I said above, has always just been a 400 with no letter designation.
Do you know what you or if you did anything southern valve springs and stuff with the new cam? I'm kinda stuck on what to do with mine and I don't know. Thank you and this monster is amazing
Typically if you go with an after-market cam they will require you to use the matching springs. I would highly recommend matching push rods as well. I have actually had problems with bent push rods.
@@billyray4716 8 around town 12 highway. I generally got 10 mpg.. its stiff. Older truck. But its a pickup. So isk what you expect. Tranny shifts really slow and its really only a 3 speed. 1st is a joke even with 3.55 rear
Yes i know. But not many people understand its literally the same exact engine. Just a different crank and pistons from what i remember so its easier to say 400m to have people relate the two.
Also makes it easier to give the 400 (which is a fine motor) a bad rap by relating it by designation to the undeserving 351m......Understanding they are basically the same motor but one having a longer stroke is not the same as people relating the so called "m" series of engines by overall performance. There is no "m" series of engines just 335. Mentioning the "m" on anything but the 351"m" is what causes most of the confusion. Just my 2cents. Nice truck though
