• ROSS low dome Big Block pistons listed in this section feature special forgings for maximum strength.
• Will also work with open chamber heads.
• Suitable for nitrous systems of 300 horsepower or less.
• Pins included are .990 dia., 2.930 length, .150 wall, 149 gram weight, aircraft quality, and are retained by double spiro lox or can be press fitted into rods.
• Compression ratio based on .050 piston to head clearance (deck and gasket combined).
• Ring grooves are 1/16, 1/16, 3/16.

w/118cc head