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 ?

Old Jan 8, 2008 | 11:56 AM
  #1  
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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?
Old Jan 9, 2008 | 08:32 AM
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Default RE: gt-40 head ?

bump
Old Jan 9, 2008 | 08:57 AM
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Default RE: gt-40 head ?

who uses smog tubes?[&:]
Old Jan 9, 2008 | 10:00 AM
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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....
Old Jan 9, 2008 | 11:11 AM
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Default RE: gt-40 head ?

it does..it has to comply with emissions too
Old Jan 10, 2008 | 07:22 PM
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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?
Old Jan 10, 2008 | 10:07 PM
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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???
Old Jan 11, 2008 | 12:30 AM
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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?
Old Jan 11, 2008 | 03:00 AM
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Default RE: gt-40 head ?

Sound like the GT-40P heads to me.
Old Jan 11, 2008 | 05:46 PM
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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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