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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

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  #1  
Old 12-13-2003, 10:03 PM
blackfoot64 blackfoot64 is offline
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Question 351 cleveland

hi i' new to the ford motors , i just picked up a '80 f150 4x4 it has a 351cleveland in it. the book i have has only the w and the m.What i need to know is what the timing is set at and if i can get a book just for that motor. oh yeah i came over from chevy


thanks:
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  #2  
Old 12-13-2003, 11:22 PM
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Welcome to FTE! More than likely you do not have a 351 Cleveland because they were discontinued in the early 70s. It is possible however that someone has put that 351C into your truck, in this case it is not the original engine. You more than likely have the 351M which is for the most part completely interchangable with the 351C and 400. The timing could be different for the 3 motors however. I really am not sure what the difference would be, I am more used to dealing with my 300 I6. I would try seting the timing to the specs for the 351M and then see how it runs, you might use that as a baseline and then fine tune the engine by ear. Good luck!
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  #3  
Old 12-14-2003, 01:29 AM
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yeah i am sure its not a 351 cleveland. The 351m looks similar but thats it. Try using 10 btdc. It could be a windsor also.
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Old 12-14-2003, 02:19 AM
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Here's a list of some ignition timing specs for 351M/400 truck engines:

http://home.earthlink.net/~bubbaf250/perf/perf10.html

Try posting in the "351M, 400, 351 Cleveland" engine forum for more help with the engine.

http://www.ford-trucks.com/forums/fo...?s=&forumid=54
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Old 12-14-2003, 05:11 PM
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Quote:
You more than likely have the 351m which is for the most part completely interchangable with the 351c and 400.
You would be surprised how much is NOT interchangeable. The heads and the waterpump, and the oil pan, and a few little things.

The truck would have to have been a 302 originally for it to slide in with not much work. An original 300 six truck would work too, but the frame perches would have to be changed. An original 351m/400 truck would have needed a different tranny to fit a 351c. In all cases, the exhaust downfalls would have to be fabricated amd custom fit for a 351c.
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Old 12-15-2003, 04:23 PM
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The 351M is a member of the 'Cleveland' family of Ford engines, so that's likely what you have. From the sources I've found, 1980-1982 is pretty much a crap-shoot for what engine you might have. This is the most succinct statement I've found:

"Ford began to gradually phase the M-block out of trucks from MY 1980 through MY 1982. Beginning in MY 1980, the 400 was dropped from the engine lineup for Broncos and F150 pickups. The 351M and 400 were dropped from all but the F250HD and F350 models by the end of MY 1981, and they were dropped completely at the end of MY 1982. "

In any case, the emission sticker on the radiator bracket should tell you exactly what engine the truck had, originally.
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Old 12-15-2003, 04:25 PM
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Quote:
Originally posted by Franklin2
You would be surprised how much is NOT interchangeable. The heads and the waterpump, and the oil pan, and a few little things.
This site has a great table of what's interchangable/what's not:
http://home.earthlink.net/~bubbaf250...history03.html
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Old 12-18-2003, 10:20 AM
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motor timing

to all who came back to me with there answer's i thank you . I just found out the other day that the org. motor was a 6 cly , the one that is in there now is a 351W '85 came out of a van.
Now ihave somthing to go on. Now to see what kind of juice i can get out it .thanks to all . if i have any more qust. i be back
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Old 12-18-2003, 10:20 AM
 
 
 
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