Engine ID
Tuned
Joined: Mar 2000
Posts: 466
Likes: 10
From: Albuquerque, NM
Engine ID
Assuming it is a 351:
Check the intake manifold. If the upper radiator hose goes directly into it then you have a "w". I the upper radiator hose does not go into the intake but into the timing chain area then you have a "c". There are other differences but this is the most obvious to me.
Check the intake manifold. If the upper radiator hose goes directly into it then you have a "w". I the upper radiator hose does not go into the intake but into the timing chain area then you have a "c". There are other differences but this is the most obvious to me.
New User
Joined: Dec 2000
Posts: 11
Likes: 0
Engine ID
I have checked the valve cover, and there is no sticker left on it. On the hood there is a sticker that says, among other things, 5.8M.... I have no way of telling if this is the original engine or not, so I need some physical characteristics to ID it; the radiator hose sounds like a good clue - I'll run out and take a look!
Thanks, all!
Thanks, all!
Senior User
Joined: Jan 2000
Posts: 101
Likes: 0
Engine ID
A 351w looks just like a 302 from the outside,and therefore has similar valve covers to a 302.They are more rounded on the top corners and if you measure the length of the top of the valve cover,it will be shorter in length than the bottom part,actually quite easy to tell the differnce right away.I believe the 351c has more of squared off and even edges on the valve covers.
New User
Joined: Dec 2000
Posts: 11
Likes: 0
Engine ID
OK Folks - thanks for all your excellent help! I called around the local Ford dealerships, and spoke to the parts guys. The second one I called immediately said I had a 351M, indicating that was the only engine they built for the f-150 in 1979. The sticker on the inside of the hood says 5.8M, which jibes with the information in the tech article on this site about 351m/400 performance. Also, in the tech article, it seems to reinforce the fact that the 351M was the engine in the '79's. I appreciate everyones help!
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Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Engine ID
>OK Folks - thanks for all your excellent help! I called around the local Ford dealerships, and spoke to the parts guys. The second one I called immediately said I had a 351M, indicating that was the only engine they built for the f-150 in 1979.
Say WHAT????
I don't think so. 
John
jowilker
Club FTE since 01 01
66 F100s
In the still cool hours of the night,
you can hear chevys rusting away.
Say WHAT????
I don't think so. John
jowilker
Club FTE since 01 01
66 F100s
In the still cool hours of the night,
you can hear chevys rusting away.
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