360 and 390 Differences
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Senior User
Joined: May 2001
Posts: 178
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From: Columbia, TN
360 and 390 Differences
To go from a 360 to a 390 is there anything that has to be done or is the out side the same size as the 360? Will the same intake, valve covers, oil pan and etc fit on a 390?
Post Fiend
Joined: Feb 2001
Posts: 6,624
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From: Missouri
360 and 390 Differences
Absolutely, the 360 and the 390 sometimes used the same exact heads and always had the same oil pan. The ONLY difference in the 2bbl truck versions of the 360/390 is the crank, rods and pistons. Air cleaners just had different stickers.
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
360 and 390 Differences
David, The crank and piston set is the only difference in the two engines. The 360 is a destroked 390. If you are thinking about a rebuild build it back as a 390, you will not be disappointed. 
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John
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Elder User
Joined: Jan 2002
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360 and 390 Differences
>390 typically had about 40 more HP and 50 or so more lb/ft
>torque. Gas mileage should be about the same, although some
>say the 360 gets much worse.
The usual joke about the 360 is;
All the power of the FE352,
with the economy of the FE390.
Which isn't far from the truth...
Steve & the Rockette
>torque. Gas mileage should be about the same, although some
>say the 360 gets much worse.
The usual joke about the 360 is;
All the power of the FE352,
with the economy of the FE390.
Which isn't far from the truth...
Steve & the Rockette
