OK, I know there are a couple of posts regarding dimple on 1969 Camaro valve covers but I haven't found a definitive answer regarding use of non-dimpled covers. It appears the dimple or slight slant was on the valve cover for clearance to wiper motor and not power brake booster clearance. My question is this, I have a solid lifter cam and wilI need to adjust valves periodically. Are the dimpled / slanted valve covers absolutely necessary or is there a work around when using standard big block valve covers? I don't want to change to smaller brake booster or change wiper motor and I prefer not to use the Corvette valve covers. Thank you in advance for your responses. Here is a picture of the valve covers I intended to use until finding out about the dimpled covers.