351w 351m engine swap

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Nov 16, 2008 | 03:16 PM

Taylor21_05

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351w 351m engine swap

I have a 1993 f350 that got a very bad oil change.. it ran out of oil.. so the motor is hooped.. needs all new bearings.. i would like to put a 351m into it because i have a fresh block sitting in my back yard. are the bolt patterns on the bell housings the same? i also have a 460. is that anything alike to the 351 m? will it bolt onto my tranny and can my rad handle the extra heat?

Nov 16, 2008 | 05:32 PM

johnmcarguy

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the 351w and 351m use diferent tranny bolt patterns. the 351w is the same as all smallblocks (289, 302, 351c, 351w), while the 351M is the same as the 429 & 460.

Nov 16, 2008 | 10:58 PM

Taylor21_05

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Now i've heard of the 351/400m being called a small block (hot rod magazine)
is that wrong? what could i look for on the motor's to double check?

Nov 17, 2008 | 06:22 AM

njtinman2

Mountain Pass

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From: nj

351m is a destroked 400 that they made with less compression it is in the big block class and is heavy is also wider than a winsor dont think you will find a trans to fit it. they have a different valvecover bolt pattern

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