| Re: Primary pipe length formula
Last up for the cam is duration. The x303 has a duration of 224 deg at 0.050". We will now decrease it to 216, and increase it to 232.
Going to the larger cam devistates the low end, with no real benifit up top. The smaller cam however, has improved bottom end, with not much lost up top. This indicates that our cam is probably just a bit on the large side for our little 302 at 7000 RPM and under. Suprising? The results might have been different if the heads didn't flow so well. |