I just finished installing a SP cam and SP lifters (HT-969) . And I noticed a rather funny thing which seems odd . All the lifters are sitting basiclly flush with the lifter bores . With the exception of #1 Int and #5 Exh which are sitting about 1/4" from the top of the lifter bores . It seems odd that all the lifters on one side of the engine are completly down in the lifter bores .