Powerhouse 1" Porting mandrel 23000BK 75" Stroke

75" Stroke

Ultra Double Pumper

Better Drivability

'68-74 Plymouth Roadrunner and '67-70 Belvedere (check the application listings for exact fitment)

Powerhouse 1" Porting mandrel 23000BK 75" Stroke1 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