Have you got a 400M or a 400C?
I believe for a 400C, around 450 cubes are possible, due to being 1" taller in deck height than a 351C.
I'm not sure if a 400M crank will allow this or if you can get an aftermarket one.
Worth looking in to though!!
hi again tuffxd,
I went searching the history books for the answer to this.
The Ford 400 used a cleveland style block, with 1" taller deck height, than 351 block.
It had a new crank with .500" longer throw and .800" longer rods than standard.
It also had 3.00" mains versus 2.799 for the 351C, Same as a 351 Windsor crank!
History Lesson Below.
[Another Ford engine you have probably heard very little about, but rightfully belongs to this same family, is the 351-M. The "M" stands for modified, but not in the way most performance enthusiasts use the term. After production ceased on the 351C in 1971, apparently the Windsor plant was unable to keep up with customer demand for an engine of this displacement, so Ford engineers "modified" the 400 by installing the 351-W crankshaft in the 400 block. ( Ford Performance by Pat Ganahl, 1979)]
Ok then so does that mean that the 400 crank and mains area is stronger than a 351c? if so maby i can just buy some strong rods and possibly a gridle? to make the bottom end strong. also Crockhunter i like your thinkin but i want to build a 400 because its different and i want to bring its rep up lol.
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