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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 07-13-2004, 05:21 PM   #1
ss4ever
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Default difference between 5.0 and 5.0 HO

Got a sweet deal on an 88 cougar with a fi 5.0 in it. What is the difference from it and the mustang 5.0 HO? How hard would it be to swap the fuel injection into my brothers 89 2.3 coupe? Should I use a HO intake? Is the wireing different? I have heard of useing a truck intake with a stock intake to make a few more ponies. Would the cougar engine have a roller cam? If so, how big compared to stock HO cam? Thanks for the replies and sorry for the long post.
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Old 07-13-2004, 07:51 PM   #2
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Default RE: difference between 5.0 and 5.0 HO

The differance between the 5.0 and the 50 HO is that the HO motor has rollerized internals and cam while the other does not. Some parts will say for use w/ either a 302 or 302HO motor. SO u cant use a roller cam in a non roller block. Using the lower truck intake with the stock upper does offer more flow but its the top piece of teh intake that is also resrictive, thats why people that do this often have thier stock uppers ported.
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Old 07-13-2004, 07:57 PM   #3
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Default RE: difference between 5.0 and 5.0 HO

HO motors also have a different firing order, they share the 351w firing order
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Old 07-13-2004, 11:11 PM   #4
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Default RE: difference between 5.0 and 5.0 HO

what is the hp difference?
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Old 07-14-2004, 02:32 AM   #5
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Default RE: difference between 5.0 and 5.0 HO

IM PRETTY SURE ITS LIKE 60HP QUITE A DIFFERENCE
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Old 07-14-2004, 03:24 AM   #6
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Default RE: difference between 5.0 and 5.0 HO

60hp! that seems a bit high...right?
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Old 07-14-2004, 03:47 PM   #7
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Default RE: difference between 5.0 and 5.0 HO

Can a person install a HO roller cam in a non roller cam 5.0 block? If I bought a HO intake, will it work with my wireing harness?
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Old 07-14-2004, 04:07 PM   #8
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Default RE: difference between 5.0 and 5.0 HO

im positve u cant install that cam, it has to be a roller cam if u want to install it into a roller motoer
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Old 07-14-2004, 04:46 PM   #9
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Default RE: difference between 5.0 and 5.0 HO

HO = Roller, so if its not HO then anything roller (besides roller rockers) cant be used internaly. The intake however should work because it is the engines internals but im not sure about the wiring harness.. I would assume so because the displacement and block size are the same...
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Old 07-14-2004, 05:08 PM   #10
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Default RE: difference between 5.0 and 5.0 HO

i dont think that the intake has anything to do with the wiring harness but im not sure
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Old 07-14-2004, 05:08 PM
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