390 oil capacity?
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Post Fiend
Joined: Dec 2003
Posts: 6,658
Likes: 4
From: "Islander"
Depends on the size of the oil filter your running, Hastings 426 of Fram's 977A are 7" long and hold a full quart alone. With a 426 Hastings and FT pan it takes 13.5 qts to read full on the stick.
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Senior User
Joined: Dec 2005
Posts: 314
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From: North Carolina
Why do some 390's have a short filrt on them and some(like mine) have the long one. Mine has a FL-1A Motorcraft on it, but my dad has a short half size filter on his. My motor is a 68 and his is a 66, does that matter? Can I run the short filter on mine or bettter to use the long one?
Last edited by pbear6969; May 23, 2006 at 08:56 PM.
FTE Leadership Emeritus
Joined: Jul 2002
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From: Long Island USA
The long one will have more filter media, and will allow more oil pressure(flow) through it over a longer period of time as it gets dirty.
I never understood what they made the short filter for. Well, OK, they made it for limited-space applications... I do know that oil change shops (and auto parts stores) will substitute the shorter one when they run out of the "right" one, "because it fits".
Once, I used a VERY long version of the FL-1A, and it gave me crappy oil pressure after a thousand miles. It had a higher PSI bypass valve in it and the media had clogged up enough to impede it. That was on a 120K+ mile 360. Of course, the oil got dirty very fast, but it made me wonder what the standard filter with a lower bypass pressure was actually FILTERING after a short period of time
I never understood what they made the short filter for. Well, OK, they made it for limited-space applications... I do know that oil change shops (and auto parts stores) will substitute the shorter one when they run out of the "right" one, "because it fits".
Once, I used a VERY long version of the FL-1A, and it gave me crappy oil pressure after a thousand miles. It had a higher PSI bypass valve in it and the media had clogged up enough to impede it. That was on a 120K+ mile 360. Of course, the oil got dirty very fast, but it made me wonder what the standard filter with a lower bypass pressure was actually FILTERING after a short period of time
Senior User
Joined: Dec 2005
Posts: 314
Likes: 0
From: North Carolina
My motor was actually a 360 but not anymore. Originaly it had the long filter on it, but it only has like 1/2 inch clearance between the frame and hte filter. The short one has like 2 inchs clearance. I was just worried about engine flex and tearing the filter off. If that is possible?
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Posting Guru
Joined: Nov 2004
Posts: 1,111
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From: Turlock CA
According to my 65 owners manual my 352 takes 6 quarts with filter change. I have always filled it with 5 and just recently started using six with great results. I swear my oil pressure improved once I switched to six quarts.
jd
jd
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Post Fiend
Joined: Dec 2003
Posts: 6,658
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From: "Islander"
A larger filter allows for more filter surface area which will prevent the filter from going into bypass as soon as a short filter when the oil is cold and thick at start up. I've never had a reduced oil pressure from running a larger filter way over 900K miles with FE's.
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Elder User
Joined: Sep 2003
Posts: 794
Likes: 1
From: Portland, OR
I'm stuck with running that short little filter on the 289 in my 23 bucket. Frame rail ended up being right there, not much I could do and those remote mount filter setups don't really fit on a car that's period for mid 60's.
The truck FE's should hold 6 quarts or right around there and the car FE's hold 5.
The truck FE's should hold 6 quarts or right around there and the car FE's hold 5.
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