mechanic in the San Francisco bay area to freshen up my 94 LT1. I want Crane 1.6 roller rockers, LT4 Valve springs, retainers, shims, keepers, pushrods and valve stem seals installed. It has a heat induced high RPM miss, that I believe is due to worn springs. The car is used for road racing and has been abused! One last confession to make, the car is a Corvette; but it still has an LT1 and that is what counts. I been reading this board for quite some time because the LT1/LT4 tech section is tops.