If your interested in making less bottom end power, below 3000 RPM widen the LSA, if you want more bottom end tighten them up If your using stock type heads think between 108 to 105 LSA installed 3 to 6 degrees advanced on the intake lobes Real tire spinning power
Why the narrow LSA on stock type heads? I thought the logic was wider LSA's on stock type heads to increase the top end because of the limited airflow.
