Intake Mani compatibility

[m0squ1t0]

My intake manifold cracked on my 2001 mustang gt convertible and I'm needing another one. Will one off of a crown Vic or anything else work? Thanks!

 

[patman0911]

Yep. A Crown Vic/Grand Marquis/Town Car intake manifold is the same as the Mustang's. They didn't get PI heads until 2001 though so stay away from earlier years. 2002 and later should have the revised intake with the aluminum coolant crossover.

 

[m0squ1t0]

Yep. A Crown Vic/Grand Marquis/Town Car intake manifold is the same as the Mustang's. They didn't get PI heads until 2001 though so stay away from earlier years. 2002 and later should have the revised intake with the aluminum coolant crossover.

Awesome! Made my day! What are PI heads though? Sorry, I'm a stang noob

 

[patman0911]

PI= Performance Improved. Ford introduced new and improved 2V heads with matching intake for the Mustang 4.6L in 1999. Other vehicles, CV/GM/TC, trucks & SUVs, got them later on. The intakes were updated in 2002 with an aluminum coolant crossover replacing the crack-prone molded in plastic crossover in the original design. Stay away from the earlier NPI (non-PI) intakes as they are a performance downgrade and will leak either air or coolant if the port mismatches aren't addressed.

Mustangs had PI intakes from 1999-2004. CV/GM/TC's had them from 2001 to present. Thunderbird/Cougars never got them. I think some trucks and SUVs may have had the passenger car style intake but I'm not positive about that - most had very tall truck intakes that you want to avoid.

The two on the left are PI intakes, the one on the right is NPI. Note that the runner closest to the front of the intake goes to the right on the PI intakes and to the left on the NPI intake.

PI intakes (top) have more rectangular ports compared to the round ports of the NPI intake (bottom)

PI intakes (left) also have much longer runners than NPI intakes (right)