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I am looking at buying a 1979 F250, and the guy I am buying it from doesn't know much about trucks. He said he wasn't sure which engine it had in it. He said it might even be a 6 cylinder but I didn't think they came in f250s?

Also how do you tell the difference between a dana 44 hd and a dana 60, which one of these axles were likely to come in this truck? Thanks!!
 

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The 300 strait 6 did come in these trucks if I remember correctly. It was a great motor for them too. That's about all I can help you with. Sorry. :(
 

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iirc, the 351 was standard and the 300 was a "downgrade" so you freed up a little cash when buying the truck new.
EDIT: for the axle, look for the casting number, and if you can't read it, check to see if the truck has balljoints or kingpins. Kingpins means you hit it big :D
 

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In an over 8500 GVWR truck(assuming that's what it is) a 300 will be backed by a 4 speed(T18 or NP 435) or a C6, which you can bolt your W right up to provided you have the proper flywheel/flexplate for the W(they are 28oz. Imbalance, 300's are internally balanced.) In a lighter GVWR app, a C4 is possible, but, much less likley with a 300 than with a 302, and highly unlikley in a 4x4.
To mount the 351W, you'll need to get a V8 rad, and mounts for a 302(I think frame stands too) and I hope you don't plan on headers...
All that is if it has a 300... if it has a M/400, gotta change the tranny too...
 
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