Quote:
Originally Posted by slik
You can also simpli look at the motor mounts as well. The lazy way.. but works everytime for me in the wrecking yards. The 351 will have mounts like the 289/302 where the bolts are vertical.
On a 400 motor, they go into the block sideways or at an angle. Works for me.
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The 351M and the 400 are the same block and use the same mounts. There is no way to externally distinguish a 351m from a 400.