Re: Roller tip rockers
I tried some roller tips on my double hump heads and they did not work out well so I removed them. If you are going to replace the push rods at the same time you will be able to get spot on matching the roller tip with the top of the valve so that will remove one possible geometry issue. As for guide plates, my heads don't have them, but I'm just running stock OEM rockers. I'd say either stay stock or go full boat with full roller rockers, but then full rollers probably won't fit under your stock valve covers if that's what you want to use. You'll probably need taller valve covers to clear the larger roller rockers, but I've not made this change so I'm not sure about that and perhaps someone here can clarify that point.
'69 Z/28, Lemans Blue/White Stripes, DZ302, Tremec Magnum, 4.10, Procar Elite Seats,
Custom Upholstery, Dynatech headers, 17" VWW V45's, 235/45, 275/40, C5 Front Brakes