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30% Off 4 Installed Tires

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30% Off 4 Installed Tires
Save 30% on 4 installed tires. Use promotional code PEP30TIRES at checkout to receive discount. Discount valid only on select in stock tires. Tires for which this offer is available will be identified in search results and tire detail pages. All other tires and special order tires are excluded from this offer. Requires the purchase of Road Hazard Warranty and Tire Installation Package, which includes valve stems or TPMS reseal kit, & balancing. State or local taxes and/or surcharges for environmental protections will be an additional charge. Valid when scheduled for installation and/or purchased on on 11/30/15.

Performance Engine Tuning

Whether you're carbureted or fuel injected, a big block or 4cyl, Pep Boys can help feed your need for speed.
  • Certified technicians working
    on your car
  • White Glove Treatment
  • Superior Resources & Experience
  • A new product demonstration
Air Intake SystemCarburatorsManifoldsHeadsIgnitionDistributors
Helps your engine perform better by removing the restrictive factory air box and replacing it with a performance intake system.
New replacement carburetors offer peace of mind that the fuel is being delivered properly and efficiently. This ensures better fuel mileage, extends your engine's life and provides additional horsepower.
Manifolds come in two basic types, single and dual plane. Dual plane intakes that offer good low-end torque (off idle, usually are found on street cars and typically peak out at around 5000 RPM. Single plane intakes reduce low-end torque but provide good mid-range and upper RPM limits to 8000-8500 RPM and higher.
Offer improved performance throughout the entire RPM range, great throttle response and top-end horsepower.
Performance ignition wires are the best of both worlds: low ohms rating to deliver the high voltage produced by the ignition coil to the spark plugs along with great suppression properties to minimize RFI.
Ignition coils transform battery voltage into short burst of high energy by sending voltage thru a series of windings wrapped around an iron core which step up the voltage with each of the 100 to 150 turns of 20-gauge wire. Aftermarket coils often have better properties in them to produce much higher voltages over the OE.
Ignition boxes with multi-strike capabilities allow your engine to run better by providing better throttle response, smoother idle, and improving overall performance. Some new ignition boxes utilize digital micro-processors which are more accurate, faster and not effected by heat. A rev limiter is also adjustable by a dial switch and the use of dip switches.
Distributors are typically driven off of the engines camshaft by a gear on the bottom connected to a shaft and rotor. When the cam turns it drives the distributor gear, which will rotate the rotor inside the distributors cap.

Simultaneously, the coil wire is transferring energy into the center terminal in the cap into the rotor causing a spark that fires the cylinders.

The spark must be timed precisely. If the spark is too early it can cause pre-ignition or a "knock", and if too late the engine will develop a ping. The timing can be adjusted by simply rotating the distributor housing while shooting a timing light at the harmonic balancer. Make sure you are within the manufacturers specifications when setting your timing. Like all other components in the ignition system there are many different choices and configurations of distributors available.
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