Ninety8stang
Well-Known Member
Well a while ago i purchased a PI intake not knowing it was a dorman and the differences between them. Well after having my car dynoed the car put down 272rwhp @6200RPM (mods are listed in my sig). I know people with similar set ups put down 290-300 so i went on a search to find where my missing horse power went and this is what i found.
As you can see here the dome on the bottom of the OEM is considerably larger as well as wider.
heres another shot showing the difference in dome size.
in this pic you can see how much larger the intake ports are on the upper end.
OEM port (notice the taller plenum hat in comparison to the smaller hat on the dorman)
Dorman port
OEM dome
Dorman dome
As you can see here the dome on the bottom of the OEM is considerably larger as well as wider.
heres another shot showing the difference in dome size.
in this pic you can see how much larger the intake ports are on the upper end.
OEM port (notice the taller plenum hat in comparison to the smaller hat on the dorman)
Dorman port
OEM dome
Dorman dome