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Old 10-13-2005, 12:00 PM
JD717 JD717 is offline
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how to tell displacment of 40 flathead V8

what numbers will tell the displacment of a V8 on a 40? I know theres a 221 cid, and a smaller V8, but I dont know much more than that about the engine at this point.
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Old 10-13-2005, 09:39 PM
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45ford 45ford is offline
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The 221 c.i. V-8 has 24 studs per head. The smaller V8-60 has ?17? per head. I'm pretty sure though, that the smaller V-8 was not installed in '40 trucks, rather, the 4-cylinder (tractor) engine was used.

Of note: 39-41 BIG trucks had a 239 c.i. engine, designated the 99T. It has a slightly raised surface for the intake manifold.

It's very possible that your truck does not have the original engine, in which case, the only sure way to determine the displacement is to measure the bore and stroke.

Mike
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Old 10-13-2005, 09:55 PM
JD717 JD717 is offline
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I'm VERY sure the engine is original, mainly because it was originally purchased from a person who I believe bought it new, and just kept it around his place for a good few years. now its time to restore it, and clean things up a bit. would the color of the block be anything of a clue?
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Old 10-29-2005, 09:27 PM
ptmilan ptmilan is offline
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I think the 221 and 239 have different letters on the heads, but I don't know the particulars.
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Old 10-29-2005, 09:27 PM
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