Swapping 351m with a 2001 7.3 powerstroke

kent01 said:

Fe engines are a bell housing pattern all their own. The 429/460 shares the same pattern as the 351/400 m.
The 289/302/351 /351c. Have a different pattern among the small block group.

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compressionignitionrules said:

only 1 deviation from this is the first year 400 had a smallblock bell housing bolt pattern. I got burned on that one, bought a ford wagon with a good 400 in it to replace dad's 79 F350 pig hauler and the car 400 looked different than the 400 I pulled from the truck. oops , hey i owned a couple GM pickups back then too...................young and stupid?

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kent01 said:

Wow, never seen that one before...
One other variable is the early small block Ford's, the 229/260 and first 289 engines through 64 had a 5 bolt bell housing vs 65 and later Windsor engines had a 6 bolt pattern. The 5 bolt bell would fit in tighter spaces.

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