R07 Cylinder Heads Twisted Port Photo

R07 Cylinder Heads Twisted Port

This is a big-block drag race head, but it is a good example of a "twisted" port that may provide the answer to the R07's low-swirl port design. By cutting the sides of the intake port on an angle that changes between the port entrance and the pocket, veteran head porter Dennis Warner believes that enough swirl can be built into the new ports to make them better than the SB2.2's more angled design.

R07 Racing Cylinder Heads - New Power For Chevrolet

This is a big-block drag race head, but it is a good example of a "twisted" port that may provide the answer to the R07's low-swirl port design. By cutting the sides of the intake port on an angle that changes between the port entrance and the pocket, veteran head porter Dennis Warner believes that enough swirl can be built into the new ports to make them better than the SB2.2's more angled design. View Related Article