Which Mustangs Came With Pi Heads?

Today, all Mustang GT V8 engines from 1999-2004 are the PI engine, whereas 1996-1998 4.6’s are referred to as NPI (non performance improved) engines.

Does a 99 Mustang GT have PI heads?

The Mustang GT Two Valve Cylinder Heads
The 1999-2004 2v heads are the power improved (pi) heads.

What is a Ford pi?

Ford Police Interceptor is a line of vehicles produced by the Ford Motor Company. The line consists of specialized variants of existing vehicles, modified for use as a police car.

Do Mustangs come with v6s?

Today’s Ford Mustang is available with a 4-cylinder or a more powerful V8—but if you’re looking for a V6 Mustang, you need to go back to 2017. That was the last year Ford manufactured the V6 Mustang, and it was available in the Fastback build as a 2-door coupe or 2-door coupe convertible.

What does PI stand for in motors?

Polarization index (PI) testing is an extension of the insulation resistance test and is designed to check specific issues in a motor such as moisture and insulation deterioration.

What year 4.6 have PI heads?

In 1999, Ford revised their 4.6L Mustang V8 to produce an additional 35 HP for a grand total of 260 HP at the crank. This revised motor, installed in all regular Mustang GT’s from 1999-2004 was dubbed the PI engine, where PI stands for performance improved or power improved.

What are gt40 P heads?

The Ford GT40 heads are a factory small block ford head found on certain vehicles, most notably, the Ford Mustang. They were most famous for their debut on the 1993 Cobra and were also found on the 1993-95 Ford SVT Lightning truck.

What is a Mustang PI swap?

Mustang PI Head Swap
The PI heads from the 99-04 Mustangs outflow the 94-98 heads and when paired with the correct PI cams and intake manifold, they deliver a huge increase in horsepower and torque. This will also bump up your compression to 10.5:1.

What is the fastest police car?

Fastest Cop Cars In American History

• 9/9 2022 Ford Police Interceptor Utility – 148 Mph.
• 8/9 2017 Ford Police Interceptor – 148 Mph.
• 7/9 1969 Dodge Polara Pursuit – 149 Mph.
• 6/9 1996 Chevrolet Caprice 9C1 – 150 Mph.
• 5/9 1993 Ford Mustang SSP – 150 Mph.
• 4/9 2022 Dodge Charger Pursuit – 150 Mph.
• 3/9 2004 Saab 9-5 – 155 Mph.

What makes a police car so fast?

According to the McNally institute, most police cars have what is called engine tuning, which basically shores up their performances. This would enable them to be on track to outrun most civilian cars if need be. In the same regard, most police cars have V6 engines, while some have V8 engines.

Are v6s faster than V8?

Lastly, V6 engines can provide more stability and better handling than their V8 counterparts. V8 engines typically offer better power and acceleration. That’s why V8 engines are claimed to be fit for most muscle cars.

Are v6s better than V8?

V6 engines typically have better fuel economy than a V8, while V8 engines generally have more power than V6 engines. If you’re in the market for a vehicle, knowing the differences and advantages of the V6 versus V8 engine can be helpful when you are trying to make a purchase decision.

What is the fastest stock V6 Mustang?

The 2012 Mustang V6 Premium had a V6 engine with 305 HP.
Ford’s Fastest Mustangs Ranked

• 2013 Shelby GT500.
• 2016 Shelby GT350.
• 2012 Mustang Boss 302.
• 2011 GT California Special.
• 2007 Shelby GT500.
• 2000 Mustang SVT Cobra R.

What does PI mean in a wreck?

Personal Injury (PI)

What is difference between PI and IR?

PI is a variation of the IR test. It is the ratio of IR measured after voltage has been applied for 10 minutes (R10) to the IR measured after one minute (R1), i.e. V is the DC Voltage applied and It is the current flowing in the circuit.

What does PI stand for in factory?

PI. Stands for physical inventory.

How do you tell if your 4.6 is Windsor or Romeo?

The Ford Windsor plant is located in Windsor, Ontario and produced the 4.6L motors for Mustangs from 1999-2001. The Windsor engine can be distinguished from Romeo blocks by looking for a “W” stamp on the block.

Is a 4.6 and a 5.4 the same block?

All 4.6L and 5.4L SOHC Modular engines employ the same basic blocks, meaning you can bolt any SOHC 3V head on any Romeo or Windsor block, which gives you a lot to choose from.

Is the 4.6 or 5.0 better?

Either way, the 5.0L is a much better engine, with plenty of room for aftermarket improvement. The 4.6 has a bunch of room for aftermarket improvement as well, but the 5.0 is a much better engine overall. To answer your question, yes it is worth the extra money.

What is better GT40 or GT40P heads?

GT40 vs GT40P, which are better? Really, when you get down to it, neither head is any measurable difference better than the other. The GT40P does have a slight edge over the GT40 cylinder head because of its smaller chamber volume. The smaller combustion chamber can net a bit more compression, but only marginally.

How much HP does GT40 heads add?

Obviously, tuneups will vary. You just want to keep it out of detonation. While we’ve seen engine dyno tests performed with GT-40P heads replacing factory E7TE castings and resulting in a boost of more than 25 hp, we have reluctantly set our horsepower gain goal at 25 ponies, as well.