Loper's Performance Center
Loper’s Performance Center is one of the oldest, most trusted speed shops in Arizona. Since 1967, we've been Arizona's one-stop hot rod shop! ft.
Loper’s Performance Center is one of the oldest speed shops in Arizona. We have been around since 1967 and opened our shop here on Indian School Rd in 1969. We are still the largest speed shop in Arizona. Since 1969 we have been selling the most wanted aftermarket high performance parts for domestic V8 vehicles. Loper’s Performance functions on a 5 acre facility in downtown Phoenix. Our business o
05/29/2026
TURBO or SUPERCHARGER?
Turbochargers generally make more peak horsepower because they do not rob the engine of mechanical power to operate. However, superchargers produce more immediate, linear torque at low RPMs because they are mechanically connected to the engine, avoiding the lag a turbo requires to spool. 🏁
05/26/2026
We're Back in Action at Loper's!
Parts & Service is OPEN 8 am to 6 pm Monday thru Friday
and OPEN 9 am to 4 pm on Saturdays!
We hope you all had a great extended weekend! 🏁
05/22/2026
People often mistake Memorial Day for Veterans Day because both honor U.S. military personnel.
Memorial Day is specifically a solemn day to remember and mourn the service members who died while serving (especially in battle), while Veterans Day is a celebration to thank all living and past veterans for their service.
05/21/2026
Working on your hot rod or muscle car this weekend?
We're OPEN Saturday 9am to 4pm & we'll be back here on Tuesday, May 26th. We hope you all have a safe Memorial Weekend!
05/20/2026
Why Dyno Tuning Matters..... Maximized Power.
No matter how many performance parts you add, your car won’t achieve its full potential without proper calibration.
Dyno tuning allows us to adjust fuel and ignition settings to optimize horsepower and torque. At Loper's Performance Center, we’ve seen builds gain significant performance improvements after just a single dyno session.
Benefits Beyond Performance
Dyno tuning isn’t just about power—it can also improve fuel efficiency, reduce wear on engine components, and extend the life of aftermarket modifications. By dialing in the optimal settings, you ensure that your performance parts operate as intended, which can save you money and prevent costly repairs down the line.
QUESTIONS?
Contact the experts at Loper's.
We're happy to help!
05/18/2026
FACT: Aftermarket headers increase horsepower and torque. Expect typical gains of 5% to 15% in horsepower and torque, depending on your engine size and supporting mods. 🏁
QUESTIONS? Call the performance experts at
Loper's Performance Center .
We're happy to help!
05/11/2026
🔥🔥 It Looks Like Summer has Arrived! 🔥🔥
As you may or may not know... Hotter air is less dense, requiring smaller jets (leaner), while colder air is denser and requires larger jets (richer). A common rule is to change one jet size for every 20 degree F change in temperature.
QUESTIONS?
Contact the performance experts at Loper's Performance Center
05/10/2026
Happy Mother’s Day to the women who make our world brighter! Your dedication deserves recognition every day, but especially today. Enjoy your special day!
05/07/2026
➡️ Does a Performance Exhaust Increase Gas Mileage?
In many cases, yes, a performance exhaust can lead to better fuel efficiency. By reducing exhaust backpressure, your engine doesn’t have to work as hard to expel gases, which can improve overall engine efficiency. Improvements in fuel economy are often more noticeable during highway driving, and won't be noticeable in stop-and-go traffic. Keep in mind that aggressive driving or high RPMs may negate any fuel efficiency gains.
➡️ Does a Performance Exhaust Add Horsepower?
Yes, performance exhaust systems can add anywhere from 5 to 20 horsepower depending on the vehicle and exhaust design. For more significant power gains, consider pairing a performance exhaust with other performance mods, such as a cold air intake, turbocharger, or tuning adjustments. When combined, these mods can make a much larger impact on overall performance.
➡️ How Much Horsepower Does a Performance Exhaust Add?
The horsepower gain from a performance exhaust system varies greatly depending on the vehicle. On average, most drivers can expect an increase of around 5 to 15 horsepower. For larger or more powerful vehicles like trucks or sports cars, the increase could be more substantial, sometimes reaching up to 20 horsepower or more.
QUESTIONS? Contact one of our horsepower experts at
Loper's Performance Center 🏁
04/11/2023
Come get some of this....
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Contact the business
Address
916 E Indian School Road
Phoenix, AZ
85014
Opening Hours
| Monday | 8am - 6pm |
| Tuesday | 8am - 6pm |
| Wednesday | 8am - 6pm |
| Thursday | 8am - 6pm |
| Friday | 8am - 6pm |
| Saturday | 9am - 4pm |