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Speedmaster Aluminum Roller Rockers are extruded from 6061 T6 Aluminum
horse power increase of 10-15
These kits are expertly crafted to restore optimal performance and are tailored to match specific cylinder head configurations and camshaft profiles
aluminum and 100 percent pressure- tested to eliminate leak
They work under the same principals as OEM tanks
Ford SB 289 302 Windsor Supercharger Crank Hub 1v Groove Accessory Drive Pulley Speedmaster Aluminum Roller Rockers areSpeedmaster aluminum crankshaft pulleys are manufactured from 356 aluminum that is heat treated to T 6 specs. These Speedmaster aluminum crankshaft pulleys help to increase horsepower by reducing accessory drag.
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