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post #1 of 5 (permalink) Old 04-06-13, 09:07 PM Thread Starter
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390ci or 360ci?

I bought a 1975 F250 Ranger XLT today, the previous owner had the truck for a year, and it was bought by his uncle brand new. he swore up and down that the truck had a 390ci motor in it because his uncle special ordered it that way or something. But the Vin shows that the motor is a 360ci. I know there is little difference between the motors (Crankshaft and a few other components) how can I tell if its a 390 like the guy said or a 360 like the vin shows? it doesn't matter to me one way or the other what motor it is, I just need to know so I can get some parts. Would Ford ever miss-mark a vin or something because of a special order?

Thank you in advance!

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post #2 of 5 (permalink) Old 04-07-13, 07:02 AM
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Re: 390ci or 360ci?

Well, you have yourself a pickle. As you stated, the 360 and 390 are the same block, different stroke. Several things could have happened.

- They could have had the parts to retro the block just to get it out the door.
- They could have said the hell with it and handed him a truck with a 360 since, unless you look up the VIN's, it's difficult to tell.
- They could have done a full engine swap.
- The whole story could be BS from either the previous owner or his uncle.

There are numbers stamped on the block and on the heads (have to remove the valve covers) and look them up in an interchange book. Unfortunately, due to it's age, it's really hard to tell what may be rotating inside that block. Fortunately, everything else is interchangeable.

Ever notice that there's so many high performance parts available for GM products?

Did you ever think that maybe they NEED them?
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post #3 of 5 (permalink) Old 04-07-13, 08:54 AM Thread Starter
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Re: 390ci or 360ci?

Thank you, I will have to look up those numbers and see what I can find out!


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post #4 of 5 (permalink) Old 04-07-13, 02:09 PM
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Re: 390ci or 360ci?

Older v8s are easily stroked. I have a 360ci Dodge and could stroke it to a 408ci! If the owner isnt sure then i would be skeptical about the vehicle in general.


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post #5 of 5 (permalink) Old 04-08-13, 09:49 PM
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Re: 390ci or 360ci?

Between you me and the lamp post, the 360 sucks.
I had one.
Next truck an F250HD 390 4 barrel and was nothing short of a hot rod, for power in stock unmodified form. I thought for a while it might be a 427, but no luck.
If the truth be told the 360 was an orfan with retarded cam timing and had some production issues. I bought it new and thought the 360 would have reasonable power.
I doubt the VIN is in error because it's important for legal title use, parts ordering etc.
I had a new 73 Ranhero with a 351C but it could have come with a 351w so the Vin has to be accurate.
Good luck.
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