Crank Question

[5150bat]

does anyone know for sure if the cast crank for a 267 is the same as a 305 ? they are both casting no. 3932442 but no one seems to know if the
counterweights are balanced the same. half the people i ask say it will interchange, the other half say no way.

[luxeryvic]

im thinkin that since the 305 is a bigger engine the counter wieghts would be heavier on it, but thats just a guess

[maxwedge]

Go to mortec.com they may have casting # interchange info. And no you cannot tell what's what by guessing about the the counter weight size.

[MrPbody]

267, 305 and 350 ALL have the "442" crank. All have different balance. Most balance shops can "spin it up" and tell you which one you have. If they have a modern machine, they don't need to make up bob-weights, as the software can figure it out. They would need to make up bob-weights if they were to actually balance it, but not just to check.

Jim