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5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

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Old 10-12-2008, 04:23 AM   #1
86GT 93LX
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Default 390 in a fox body anyone?

i was thinking how everyone puts 351s and makes stroker motors and it seems played out to me.and a 460 is a bit heavy. looking for opinions on a 390 and what would be needed, pros and cons. and how do u get a built t5 behind it? im thinking of building a g force t5 but wonder about a bellhousing
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Old 10-12-2008, 07:14 AM   #2
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as far as I know, the 390 and 460 are based around the same block, they are both "FE" motors. ford racing and a few others make conversion kits to put them into a fox
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Old 10-12-2008, 10:57 AM   #3
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390's and 460's are not the same block , i know i have built a few of them and had many more, they are not both fe motors they are quite different different stroke,rods,pistons, and the only ford motor where the pushrods go through the intake and not the head. very different and both motors are very heavy.

they make kits for them and i am sure that you would need to run a c6 or an old school 4 speed never seen a bell for a 5 speed for them.
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Old 10-12-2008, 01:10 PM   #4
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390's and 460's are not the same block , i know i have built a few of them and had many more, they are not both fe motors they are quite different different stroke,rods,pistons, and the only ford motor where the pushrods go through the intake and not the head. very different and both motors are very heavy.

they make kits for them and i am sure that you would need to run a c6 or an old school 4 speed never seen a bell for a 5 speed for them.
so are you saying the push rods go thru the intake on a 390?
as far as i know the 360 and 390 are the same block right? just different stroke
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Old 10-12-2008, 01:32 PM   #5
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i know a 460 only weighs about 100lbs more then a 351w, so if weights the issue ud prolly loose that in aluminum heads and intake.
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Old 10-12-2008, 01:36 PM   #6
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i know a 460 only weighs about 100lbs more then a 351w, so if weights the issue ud prolly loose that in aluminum heads and intake.
yeah thats not too much weight :P
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Old 10-12-2008, 01:42 PM   #7
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yea throw a tubular suspension on the front an cut the PS and aluminum heads... now your back down to the weight of an iron headed 302W
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Old 10-12-2008, 02:30 PM   #8
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yea throw a tubular suspension on the front an cut the PS and aluminum heads... now your back down to the weight of an iron headed 302W
im just wondering about efi for a 390... im not a big fan of carbs. what was the last year a 390 was used in a truck is probably the question. i really havent researched it much but my friend has a sweet 390 in a old 74 truck and it has a laot of power for only a mild cam and intake carb set up and headers
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Old 10-12-2008, 06:00 PM   #9
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if i remember right the last year for a 390 in a truck was '77. they are a good hard running fast reving engine. little head work, intake, cam, and headers with good exhaust and you'll have a stout motor. if your wanting to go fuel injection check out a holley TB set up or something of that nature. tranny wise i dont know about a 5spd but maybe a 4spd m-21 or m-23 muncie would be a great set up if you could find one. if not i would probly go with a c6 with a stall and shift kit. let us know how the build/ideas come out for ya.
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Old 10-12-2008, 06:55 PM   #10
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if i remember right the last year for a 390 in a truck was '77. they are a good hard running fast reving engine. little head work, intake, cam, and headers with good exhaust and you'll have a stout motor. if your wanting to go fuel injection check out a holley TB set up or something of that nature. tranny wise i dont know about a 5spd but maybe a 4spd m-21 or m-23 muncie would be a great set up if you could find one. if not i would probly go with a c6 with a stall and shift kit. let us know how the build/ideas come out for ya.
yeah well im sitting here with another dead t5 and my landlord has the 74 explorer truck with the 390 and he will sell it for pretty cheap, so it gave me the idea of doing something differant. the truck has a 4 speed, not sure how well its geared for going fast but he claims its geared to go fast.i was thinking a turbo inline 6 or something like this or maybe even something flat out silly like a turbo dohc 4 cyclinder turbo volvo motor in a fox. all these people try to put the volvo head on the 2.3l why not just put the whole motor in it!
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Old 10-12-2008, 06:55 PM
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