390?

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Feb 25, 2008 | 08:40 PM

MER

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Joined: Jan 2008

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390?

I was wondering if the 390 is as tuff and as reliable and durable as the 300 I6 and is it true that they have the same mounting perches for a direct swap?

Feb 25, 2008 | 10:23 PM

390Highboy

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Joined: Jul 2006

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The 390 is a good engine although it would probably not run quite as long as the I6. I have a bored out 390 in my 76 F150 that is mildly built and I absolutely love it. Lots of low end torque and high end horsepower too. As for the perches I'm not sure but I really doubt they are the same. I know the bellhousing bolt patterns are different

Feb 26, 2008 | 05:10 AM

jowilker

Fleet Owner

Joined: Jun 1999

Posts: 24,552

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From: Creedmoor, North Carolina

The I-6 and FE share the same perches. While the I-6 might be as good as the 390 why would you want to run less power for the same buck?

John

Feb 26, 2008 | 09:47 PM

my79f

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Joined: Jun 2003

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wait wait wait. so i can drop the I6 into the same perches as the 390 without any modification. i surley hope that this is the truth. that would make me so happy.

Feb 26, 2008 | 10:50 PM

Hypoid

Cargo Master

Joined: Apr 2004

Posts: 2,574

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From: Golden, CO

Pretty much, if you use due diligence they both can live a long time. Search for threads by Hoxii, he did a swap in his '80s truck.

https://www.ford-trucks.com/forums/5...-150-pics.html

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