I.d ing 2.8 heads

[Mark00s4]

Hi how do tell a 2.8 head vs 2.7. Is there marking that identify it? The heads i got have 28 marked on the the roof of the intake port. What does mean?

[richmonds4]

2.7 = APB
2.8 = AHA / ATQ ( manuel, auto)
also the 2.8 have much larger intake ports , just google them and you can see the diferences .

[Mark00s4]

Ok i did google and the ports on my heads look small,but the 28 marking is throwing my off.
Where is the head marked aha/atq?

[ianwpb]

Its marked on the passenger side head. On the right side close to where the diverter valve would be.

[Mark00s4]

Ok i did google and the ports on my heads look small,but the 28 marking is throwing my off.
Where is the head marked aha/atq?

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Sorry ,double post.

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Ok got it,let me take a look. Thanks for the info.