351W or 351M
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Junior User
Joined: Feb 2002
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From: Winnipeg, MB.
351W or 351M
In 1979 could you get a 351W in an F-250? I've been on the 351M/400 forum and it sounds to me like you couldn't. Also what is the easiest way to tell a 351W from a 351M?
Elder User
Joined: Aug 2001
Posts: 589
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From: Crossroads of America-Ind
351W or 351M
I recently bought motor mounts for my 351w that I put IN a 79 4x4 chassis that CAME with a 351m. When they went to look up mounts they showed it as also being avalable with a 302, which is the same mount as a 351w. I have a 79 light truck shop manual though, and it does not show a 302 as being available. The guy at the parts store said it WAS in Mexico. Go figure ?? 
================================================== ============
>In 1979 could you get a 351W in an F-250? I've been on the
>351M/400 forum and it sounds to me like you couldn't. Also
>what is the easiest way to tell a 351W from a 351M?
================================================== ============
>In 1979 could you get a 351W in an F-250? I've been on the
>351M/400 forum and it sounds to me like you couldn't. Also
>what is the easiest way to tell a 351W from a 351M?
Senior User
Joined: Apr 2002
Posts: 155
Likes: 0
From: KC Metro
351W or 351M
If you look at the engine, the first clue will be to look at the way the Radiator hooks up. In the 302/351w series engines, the Radiator hose will attack to the Intake manifold and disperse to the engine that way, If it is a cleaveland style motor(351c, 351m/400) The raditator hose will go directly to the block. This is the surest way to tell. Also, if the valve covers are stock, like said before, the cleaveland engines have 8 bolts while the windsor style has 6. The valve covers for the Cleavelands are also a bit taller for the valve clearence. I hope this helps.
Daniel
Daniel
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Freshman User
Joined: Apr 2002
Posts: 27
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From: Oregon
351W or 351M
The Winsor block has a removable timing chain housing behind the water pump. On the 351C/351M/400 block the timing chain housing is cast as part of the block.
The 351M is a 400 block with different crank and pistons.
kmichaelb
The 351M is a 400 block with different crank and pistons.
kmichaelb
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