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.

gt-40 head ?

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Old 01-08-2008, 11:56 AM
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F5GTS331
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Default gt-40 head ?

does a 93 gt-40 head not use the smog tube that runs around the back of the motor?
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Old 01-09-2008, 08:32 AM
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Default RE: gt-40 head ?

bump
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Old 01-09-2008, 08:57 AM
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my77stang
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Default RE: gt-40 head ?

who uses smog tubes?[&:]
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Old 01-09-2008, 10:00 AM
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Novipowered5.0
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Default RE: gt-40 head ?

ORIGINAL: F5GTS331

does a 93 gt-40 head not use the smog tube that runs around the back of the motor?
Mine does....
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Old 01-09-2008, 11:11 AM
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mjr46
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Default RE: gt-40 head ?

it does..it has to comply with emissions too
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Old 01-10-2008, 07:22 PM
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F5GTS331
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Default RE: gt-40 head ?

thats what i thought but i does not have the holes in the head for it cuz there should be a hole the exhaust comes out of and a bolt hole to bolt for the tube but theres no bolt hole so whats the deal?
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Old 01-10-2008, 10:07 PM
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mjr46
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Default RE: gt-40 head ?

ORIGINAL: F5GTS331

thats what i thought but i does not have the holes in the head for it cuz there should be a hole the exhaust comes out of and a bolt hole to bolt for the tube but theres no bolt hole so whats the deal?
then you don't have gt-40 heads....the gt-40 will be stamped in the valvetrain area....how are you sure they are gt-40 heads???
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Old 01-11-2008, 12:30 AM
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nacanitihs
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Default RE: gt-40 head ?

are you sure you dont have the p's? how many bars are on the side 3 or 4?
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Old 01-11-2008, 03:00 AM
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Default RE: gt-40 head ?

Sound like the GT-40P heads to me.
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Old 01-11-2008, 05:46 PM
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F5GTS331
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Default RE: gt-40 head ?

not sure about the bars it says gt next to one of the head bolts and had a part # of f3z3aa if that will help any
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