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ASP

ASP

About ASP

ASP Underdrive pulley systems increase engine horsepower by reducing the amount of power required to drive external engine accessories. Auto mechanics use ASP underdrive pulleys as a replacement pulley that contains a different ratio and material specifications that free up lost horsepower. By using an ASP underdrive pulley, you are increasing the diameter of each accessory pulley and decreasing the ratio of the crank pulley. The speed at which the accessories are turning relative to the engine's rpm's decrease.

By installing a resized Auto Specialties Performance pulley, the accessories are slowed. This results in more horsepower available to the drive wheels. Typically, a set of Auto Specialties street pulleys will increase horsepower by 12-15, and increase mileage by 2 to 3 MPG.

Why should you buy a Auto Specialties Performance underdrive pulley? Auto Specialties Performance has been in operation since 1988. All ASP pulleys are manufactured from Billet Steel or Aluminum, exceeding factory quality. ASP pulleys start out as as a solid bar of either 6061-T6 Alum or 1045-carbon steel.

If you were able to tour the Auto Specialties Performance factory you would be able to see for yourself how intricate and exacting the production process is from the beginning where all of the solid bars have to be cut to size using an automatic saw that can cut within .010 of an inch. Next they are machine lathed with specifications that can be tweaked to as little as .0003 thousandths of an inch for a perfect fit and then any necessary millwork takes place. And for the most important part, quality control procedures are tantamount at the facility safeguards are in place at all stages of the total operation to assure that the customer gets a product that is manufactured to perfection. From this visit it would be easy to see why Auto Specialties Performance (ASP) has been the leader in the underdrive pulley market for twenty years and why they should be trusted with you are in the market for and underdrive part .

The ASP UNDERDRIVE CRANK AND UNDERDRIVE ALTERNATOR PULLEY that is SFI approved racing for your 1998-02 Firebird V8 can give you back some of the much needed horsepower that is stolen by your water pump, A/C compressor and power steering when powered by a factory installed pulley and as a plus you can see up to a 15 percent increase in horsepower with the underdrive pulley system. And for better performance in your Corvette consider the ASP Underdrive Pulley SFI Approved 25% Harmonic DAMPNER Crank for a reduction in crankshaft torsional vibration, greater valve train and timing efficiency and a reduction in wear to the car’s main bearings, oil pump and crankshaft. And if you are on the racing circuit with your Camaro you might be interested in the ASP LT-1 pulley 23% Crank 'Nitride' Camaro 1993-97 V8 with its nitride coating that diffuses nitrogen into the surface creating a much harder surface and more durable product so important considering the rigors of racing. If you're looking for a performance exhaust, check out our Borla Exhaust Systems here!

About ASP

ASP Review(s):

Reviews for ASP's products are show below.

ASP Underdrive Pulley (SFI Approved) 25% Underdrive LS1 Camaro Street/Strip 1998-02 V8
5 Stars asp underdrive pulley, Date: 11/14/2009

By: Gizmo
Ownership: 1 month - 1 year
The car now runs alot better, more miles to the gallon, high rpm revs, and close to 19 more horsepower(18.7hp).

Current Mods:
slp-headers, high flow cats, y-pipe, magnaflow exhaust, sphon torque arm, sphon tubular sub frame connectors, sphon drive shaft, sphon rear tubular adjustable lower control arms , three inch steel drive shaft rated to hold 1,200 horse power, 4.11 moser 12 bolt rear, short throw shifter, slp flow pac, drilled and slotted bear rotors and ebc green stuff pads on all four corners, 20% tint all around, 90 mm slp mass air flow sensor, and asp 25% underdrive pulley.


GMC

These are some of the items you can find at LMPerformance for your GMC

For the performance look there is none better than RK Sport, recognized by DaimlerChrysler and GMC for Excellence in Design For their Body Kits and Hoods. RK Sport products are manufactured in the USA and are made of OEM quality urethane that guarantees long-lasting durability and optimum flexibility and for those who want a more affordable variant, RK SPORT offers body kits manufactured from hand-laid fiberglass. For your Sierra 1500 and the Sierra HD investigate the Ram Air Hood crafted from hi-temp, hand laid fiberglass for noteworthy strength and durability and featuring a functional Ram-Air Scoop that gives your truck a sportier look while delivering cool air directly over the factory air-box or the 1500 Ram Air Hood w/ Heat Extraction Vents for the 2014 and up. This hood comes with functional Ram Air Scoop and Heat Extraction Vents and utilizes stock hood hardware for uncomplicated installation and it comes with an Air Scoop, Heat Extraction Vents, is Hand Laid or Hi-Temp Fiberglass, Gel Coated in Gray and Ready for Prep and Paint.

Late Model Performance offers a range of possibilities for your iconic GMC car when it comes to exhausts thus affording you the option to choose what's best for your car depending on the model and year and your objective. Possibilities like exhaust systems from the prestigious BORLA brand whose exhausts are manufactured with aircraft-quality T-304 stainless steel inside and out and with gains of 7 to 10 percent in Horsepower and easy bolt-on installation. Bigger is not always better because big pipes can divest the exhaust of energy and additionally aggrandize the low frequencies culminating in uncomfortable roaring or droning sound. The BORLA exhaust system is less restrictive and preserves the velocity and high frequency so the dominant sound is behind the tailpipe and in addition to that BORLA’S sui generis Inter-cooled Tips have an idiosyncratic look that is sure to catch the eye. For your Canyon there is the Cat-Back S type. for the Envoy there is the Trailblazer. For the Sierra 1500 choose from one of many parts: the Cat-Back Exhaust S-Type Side Exit with Black Tip, the Cat-Back Touring, the Cat-Back Exhaust Split Rear Exit S-type and ATAK, the Cat-Back Split Rear Exit Touring, the Cat-Back S-Type Single Exit Dual, the Cat-Back ATAK Side Exit, Cat-Back S-Type, Cat-Back Touring and Touring Dual Behind Tires Side Exit, the Cat-Back ATAK, the Cat-Back S-Type Dual, Rear E, Cat-Back Single Side Exit, the Cat-Back S-Type Dual Rear, Cat-Back Touring Dual Out Back, and an exhaust system for your Silverado 2500 as well. For the Suburban/Avalanche/Yukon there is the Cat-Back Exhaust, for the Escalade Yukon Denali, the Cat-Back single Side Exit D, for the Tahoe/Yukon the side exit Twin Tips, for the Escalade/Denali the 6.0L V8 AWD AT 4DR 2002-04.

Another inestimable choice. CORSA. can equip your car with an inimitable exhaust system such as their cat back exhaust, axle back exhaust, sport system, tips, sport or touring system and pro series. The CORSA exhaust has an aggressive performance sound and are acoustically styled and engineered to match the make, model, and harmonics specific to your GMC and there is no drone with the CORSA exhaust system because the CORSA exhaust system uses RSC™ technology to eliminate "problem" frequencies that cause those annoying interior noises with cruising. CORSA'S patented non-restrictive Straight-through design reduces back pressure resulting in improved horsepower and torque and fuel economy. And best of all CORSA offers 3 levels of sound: X-TREME - their loudest offering; CORSA'S Sport systems for the in between; and the sport option for the least sound. For your Sierra there is the Cat-Back Single Side Exit, Dual Rear Exit, Dual Exhaust Kit, Sport Exhaust Dual Out the Rear, Sport Cat-Back, Silverado/Sierra Ext, CAM Short Bed or Crew Cab Sport, and others. There is a Cat-Back Exhaust for the Sierra/ Denali Cat-Back Short Bed Sport model, for the Extended Cab/Standard Bed, for the Crew Cab/Short Bed, among others. And in order to decrease air temperatures, and increase the volume of cold air entering the engine increasing Horsepower, Torque and overall engine performance consider a Cold Air Intake from CORSA for your Yukon and Denali. Featuring Donaldson Power Core Filtration Technology, CORSA air filters are warrantied up to 100,000 miles, flow better than traditional cellulose or cotton fiber filters and filter up to 99.99% of engine damaging dirt, dust and debris.

GMC Owners you now have an opportunity to take advantage of the 100% U.S. made 304 S/S header system designed by American Racing Headers. American Racing Headers' GM truck systems feature 3/8 thick laser cut flanges with hand ported inlets, merge collectors with scavenger spikes, 200 cell metallic substrate cats and your choice of 1-3/4 or 1-7/8 primaries. Systems are available for 6.0L 2WD or 4WD trucks and are guaranteed to deliver outstanding performance throughout the RPM range while providing a fit and finish that is second to none. Peruse the list of American Racing Headers available for your GMC truck and you will certainly find the right part at the right price and with free shipping.

With an inimitable reputation like the one Kooks has you won't go wrong in choosing one of their headers for your GMC vehicle because since 1962 they have been making the highest quality & best performing Custom Stainless Steel headers and exhaust systems. Kooks Long Tube Headers, Off-Road Y-Pipe, GREEN CATTED Y-Pipe, CATTED Y-Pipe, Off-Road Connection Pipes, Green CATTED Connection Pipes, and CATTED Connection Pipes for your GMC Truck will exceed the standard you have set for your GMC Truck because KOOKS prides itself on being the pioneers in the stainless steel header revolution and are the innovators in the exhaust industry as a whole. Choose the Kooks for your truck and see what a difference they make in performance and presentation.

Still more choices for your GMC with the iconic manufacturer Stainless Works whose product line of exhaust systems, headers, and off road pipes are made from only the finest EVERLAST 304 stainless steel, that is a little more expensive and premium quality so their products do not red-rust, ever. For your Silverado/Sierra there are the CATTED X-Pipe Performance Connection, Off Road X-Pipe Performance Connection, the Exhaust system with Y-Pipe exits in front of Passenger Rear and also Behind Passenger Rear Ti, the Exhaust System - True Duals for SW Headers Exits Dual Straight and also with exits in Front, with Exits Behind Passenger Rear Tire, Off-Road with Dual X-Pipe, Headers with High Flow Catalytic converters and True Dual XPipe, and with High Flow Catalytic Converters with Y-Pipe, 4wd headers, and others. Peruse the listings for Stainless Works and find the exhaust system or part you need for your GMC vehicle and you will find a quality part for your GMC needs.

And from the eminent manufacturer WEATHERTECH a variety of products to meet your every protective need. You can choose from the WEATHERTECH LAMPGARDS for your headlights on your GMC Denali, Sierra and other models. And also from WEATHERTECH, the TECHSHADE for your Sierra, Denali and other models, a perfect fit windshield and window sun shade that protects your GMC's interior by cooling it down in the summer and preventing frost build-up in the winter. And yet more great products from WEATHERTECH, the WEATHERTECH Floor Liner with Digital Fit for interior carpet protection designed using Digital laser measurements for a perfect fit. For even greater protection particularly in those winter climates try the WEATHERTECH All-Weather Floor Mats for your GMC that trap water, road salt, mud and sand. And for unquestionable vehicle protection from mud, rocks, stone chips, slush, and other road debris install the WEATHERTECH No-Drill Mud Flaps and the WEATHERTECH Sleek and low profile Easy-On Stone & Bug Deflector to provide excellent protection against stone chips and bug splats. The Roll Up Truck Bed Cover by WEATHERTECH for your GMC truck keeps cargo away from the elements when covered and stays out of the way for oversized cargo and it features the Auto Latch II automatic dual locking system that releases with one smooth downward pull and when used with a locked tailgate it provides excellent security. The Sunroof Wind Deflectors from WEATHERTECH for your GMC provides of in-cabin wind noise and the WEATHERTECH Side Window Deflectors are custom fit rain and debris guards. And last but not least, the WEATHERTECH Under-liner for your Sierra/Sierra Denali, a custom- fitted bed liner for pickup trucks that protects the truck bed underneath.

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