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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

Engine Identification 360 or 390

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Old Jun 2, 2024 | 11:08 PM
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Engine Identification 360 or 390

So, my truck was in the process of being restored by the previous owner in Arizona and the fellow passed away. His daughter didn’t know what to do with it so she put it up for an auction. Guy in East Hampton bought it, got it running and put the bumper on, then I bought it. I love this truck, but I don’t like being unsure of what’s in it. The VIN calls for a 360 but the guy I bought it from says someone along the line put a 390 in it.

Is there a way to be sure other than measuring displacement somehow? Maybe I could measure a stroke length with a stick? Or is the stroke the same for both engines?

A few people have said she’s got an aftermarket cam, now that the weather is warm I’m hoping to pull a valve cover and take some photos and maybe someone could help identify it.

VIN F25YRN65000
 
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Old Jun 2, 2024 | 11:52 PM
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Measure stroke. 3.5 for the 360, 3.78 for 390.

As OEM, in any given year the 2V 390 and the 360 are identical externally.
 
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Old Jun 3, 2024 | 06:38 AM
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Originally Posted by 85e150
Measure stroke. 3.5 for the 360, 3.78 for 390.

As OEM, in any given year the 2V 390 and the 360 are identical externally.
Awesome thanks so much for that. Going to try and measure today, I feel like a chump not being entirely sure when people ask what’s under the hood.
 
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Old Jun 28, 2024 | 05:02 PM
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It's amazing how a lot of times a 360 becomes a 390 when it's time to sell.
 
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