Boss Mustang stocker

[FireSale]

Originally Posted by goinbroke2

Actually my point is that the guide is wrong. The 351C has a 5.78 rod length, the 351M and 400 both have 6.58" rods.
Deck height on a 351C is 9.206, the 351M and 400 are 10.297"
To put it bluntly, you cannot use 351C rods in a 351M.
Pull the crank and pistons out of a 400 and put in 351M crank and pistons and you now have a 351M, everything is the same except crank and pistons.

So, why has this never been picked up? I'll assume it's because nobody has ran a 351M in anything. Although I do remember a mid 70's green wagon but I'm sure it was running a 400. (jolly green giant maybe?) Regardless there's no replacement rod for the 400 (or 351M)

I wouldn't really trust the NHRA Blueprints on fine details of engine building.

As noted, the only rod length for the 1970 302 listed is 5.090 when everyone in the Ford community knows the BOSS 302 ran 5.155 rods.

They list it in 69 but not 70. You also can't race a 68 GT350 with the good 4bbl legally because that car is nowhere in the Stock Car Classification Guide. Just the GT500. As if no one ever took a GT350 to the strip in the 60s...

You are correct with the rod lengths for the 351. NHRA lists the 70 351c with 5.780 rod length. For 1975, the 351m has 6.580 rods listed and there is a 351w in that year with 5.959 rods.

If I were to build a 351 to move up in GT, I would be very careful with the details.

Dale