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

dumb question? what engine

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Old Oct 1, 2006 | 11:28 AM
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f2504ever
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dumb question? what engine

I have a 83 f250 camper special with 325,000 miles on it. I'm going to replace the engine this fall with a rebuilt one. because i can't have much down time with the truck , i'm going to get an engine from the junk yard and rebuild it and just switch engines. the engine is a 351 question is it a 351w or 351m ?



Thanks ken
 
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Old Oct 1, 2006 | 11:37 AM
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Quickest way I use to identify the two is the fuel pump, the W has the bolts holding it on across from each other and the M has them stacked one on top one on bottom.
 
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Old Oct 1, 2006 | 11:46 AM
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thanks i'll go take a look . ken
 
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Old Oct 1, 2006 | 06:17 PM
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351W4bbl
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you can always look on the heads. The Windsors had a specific casting number. I can't recall it at this time. I'm about 95% sure it is a 351 modified 2 bbl though
 
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Old Oct 1, 2006 | 08:38 PM
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If it's an '83 it's a W. <i> EDIT: Whoops, missed that it is a 250</i>


To check, though, look at the timing case. On an M, it is cast into the block. Also, the thermostat housing is cast into the block.

I learned this. and much more by using the search function of this board.
 

Last edited by booker250; Oct 1, 2006 at 08:41 PM.
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Old Oct 3, 2006 | 05:30 AM
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I can't belive no one mentioned this already!

One super easy way to tell it to look on the fan shroud. It lists the engine specs.
 
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