Engines » Butler Performance 499 cu.in. with an IAII block.

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2016 Update- 4.250" Stroke 4.350" Bore 505 cu.in. making 855hp @ 7400 RPM and 685 ft.lbs. of Torque

This engine features highly modified (by Butler Performance) RAIV heads. 820 HP @ 6800 RPM- 650 ft.lbs. of torque. ( 4.375" Bore x 4.150" stroke ) Butler Performance has a PONTIAC Engine combination for ANY application!

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