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.

I hate to ask but...

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Old 03-02-2006, 10:24 PM
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5speed GT
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Default I hate to ask but...

is my 1991 mustang 5.0 a H.O? It doesnt say it on the intake manifold... and I would like to know before I start the rebuild. thanks ahead of time.
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Old 03-02-2006, 10:27 PM
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89chatofive0
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Default RE: I hate to ask but...

I think they are HO. Aren't They?
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Old 03-02-2006, 10:27 PM
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ckyguy68
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Default RE: I hate to ask but...

i am 99% sure that all 91 5.0s were HO. i think they all were starting in 86? your manifold is probably off another vehical. (explorer)
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Old 03-02-2006, 10:34 PM
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89chatofive0
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Default RE: I hate to ask but...

it could just be missing the manifold badge.
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Old 03-02-2006, 10:35 PM
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ckyguy68
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Default RE: I hate to ask but...

it would be obvious if the badge was gone. there is a hole exposed when you take it off.
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Old 03-02-2006, 10:38 PM
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5speed GT
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Default RE: I hate to ask but...

the plate is there, it just says 5.0 EFI
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Old 03-02-2006, 11:41 PM
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89chatofive0
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Default RE: I hate to ask but...


ORIGINAL: 5speed GT

the plate is there, it just says 5.0 EFI
check under the plate my has a HO casting on it behind the badge. CKY the guy never said the maifold had the badge so i assumed it was missing.
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