Originally Posted by
st pete chad
from what he said once it hits 8psi it goes from 18 to 11.5 timing.just look at the spark graph.now that he showed it to me i understand it but im not 100% sure they would stop it from making power past 4800RPM
That needs to be higher. Timing that low will lose a lot of power. Put some 100 NL in the tank, put timing to 18 degree's above 4800 RPM's and fatten it up a little to lower 11's.. should pull clean. If it doesnt.. then its springs.