1977 Ranchero Gt engine question

one other thing is the 351m/400 are the same block, you can use a 400 crank in the 351m and only have to change to 400 pistons{ 351m pistons will be about a 1/4" out of the block at tdc, not a good thing} another source for info on the 351m/400 is www. tmeyerinc.com these motors can pump out some serious street hp 400+ and torque400+ without breaking the bank. i've been gathering the parts for one to go in my 74' chero...........ray