What's the story on replacing the 1.5 ratio rockers with 1.6 ratio rockers? There seems to be a range of different rockers, but Speedway offers roller tipped 1.6 rockers for about $80. Is it necessary to add guide plates with these? I note the pushrod holes in my 350 ('76) are pretty small and sort of square. Can you just replace the rockers without guideplates and thereby gain H.P. and torque? The roller tips are supposed to reduce friction significantly as well. If so, that is an easy and inexpensive way to improve the power of the engine. I already have stronger chrome-moly pushrods but maybe they are necessary when changing the rockers?

Don Shillady
Retired Scientist/teen rodder