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are recommended in all race applications because of their superior strength
1-1/2 in Bore
2018-2019 Dodge Durango
1979-1980 Chevrolet G20
Powerhouse 1" Porting mandrel ICM are recommended in all race1 Inch Long Porting Mandrel This porting mandrel is 1" long with a 1" x 18" wide tip. Works with all Powerhouse cartridge rolls 1 4 Inch in Diameter. See our POW351510 Kit. Powerhouse produces an extensive line of tools designed for engine builders and tuners. Their product lineup includes specialty tools for everything from the cylinder head and valvetrain to the block and drivetrain. Powerhouse Products is your 1 stop source for automotive specialty
