it could have even been valve spring psi that i could not gain psi.150# seat with cam 1#.the springs were spec from bds with that cam.
as for the restriction and gaining boost psi yes that would be a possibility in some casses like overlap and less going out the exhaust.an added note that my cranking psi went from 100# to 130 with the cam change #1 to #2.

Last edited by METAL STORM; 03/12/11 12:12 PM.