Sonny's Racing has released their new 5.3 Bore Space Wedge Cylinder Heads for 800 + cubic inch engines, the same as they used in nitrous Pro Mod racing. These new lightweight cylinder heads from Sonny's will flow up to 660 cfm at 1.200 lift on the Intake runners and 470 cfm at 1.200 on exhaust runners.

These new heads accommodate up to 2.750 Intake with 2.000 exhaust valve. Intake runners are symmetrical and designed to use all 18 studs in the deck of the block without pulling the intake manifold for track service. These are the same cylinder heads used by Rickie Smith, who recently ran 5.90 at over 240 miles per hour, and Dennis Radford who ran 5.92 at over 237 MPH. These cylinder heads are for racers who are looking out for all out performance in Pro Mod Nitrous Racing.

For more information, visit www.sonnysracing.com or email - sonnysracing@aol.com