Modified questions

[randy wilson]

anyone going to the ihra divisional race at thompson ohio? is it a fast track?

[Ron E]

The N351 short deck motor should be a great CS motor. Another plus with the Ford is a finished 8.2" block won't cost you almost twice as much a 9" block as is the case with GM. What it will take to get the gains on the track is another story, but the 15°W2 (or even the standard 18°) and the 10° N351's just look better for SS/CS than the bowties. Main thing is the pushrod pinch isn't nearly as bad as the chevy. (no external port modifications in the port areas). The port cross section on the Dodge or the Ford can be much more consistent.
But, Mann's may not be impressed with my observations as his stuff is flying. There's always at least one racer who screws up a perfectly good theory.

[BlueOval Ralph]

Find early heads raise the port 1/4 to 3/8 " fill the floor to the short turn. There is enough material in the roof of the casting.

Originally Posted by Ron E

The N351 short deck motor should be a great CS motor. Another plus with the Ford is a finished 8.2" block won't cost you almost twice as much a 9" block as is the case with GM. What it will take to get the gains on the track is another story, but the 15°W2 (or even the standard 18°) and the 10° N351's just look better for SS/CS than the bowties. Main thing is the pushrod pinch isn't nearly as bad as the chevy. (no external port modifications in the port areas). The port cross section on the Dodge or the Ford can be much more consistent.
But, Mann's may not be impressed with my observations as his stuff is flying. There's always at least one racer who screws up a perfectly good theory.