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I found my answer guys there is no differance in the 2 blocks from what I understand 3y and 2y just casting number for the crank internal/external balanced

Another question for yall

Has anyone...

Thanks for the link its great
As for the 460 I have I pulled it apart and noticed one head was cracked and the motor has already been bored but a friend of mine has several good 460 blocks

My...

Thanks for the links and posts.

As for the motor in the ford, I have a low mileage 400sb out of a wagon but from what I have come to find out they dont hold up to higher horse power I would love...