Ford Performance Ring & Pinion 8.8" Axle
397-M-4209-88373
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Ring & Pinion Gears
Ford Racing ring and pinion sets are engineered, manufactured, and tested for maximum performance. These ring and pinion sets are finished in a black oxide coating for corrosion resistance, and are available in many different ratios to fit a variety of Ford differentials. ** Note: 3.15 Ratio Differential not compatible with 3/31, 3.55, 3.73 and 4.09 ratio gears. Use differential M-4204-MT or M-4204-M. * This part is designed and intended for competition use only. It should not be installed on a vehicle that is driven on public roads and highways. Installation of this art on a vehicle driven on public roads and highways is likely to violate U.S. and Canadian laws and regulations relating to motor vehicle emissions.
Specifications:
If my F150 has 3.55 gears will replacing them with 3.73 be a noticeable difference?
I was told that my 2000 F150 4x2,4.6 V8 has 3.55 gears from the factory. If I installed this 3.73 would it change my speedometer,and also decrease my gas mileage?
Is the pinion gear in this set the same as the one in the 3:55 kit ? Both pinion gears have the same tooth count.
Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools:
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.