one thing I did to my stock block stroker that makes it live & gives me piece of mind as I race it, is bushing the lifter bores. Oil pressure is now always good where as before, once it got hot, the pressure at idle was almost nothing. I used a diy lifter bore bushing kit & honestly, when youre doing rounds & hot lapping it, oil pressure no lower that 25psi at idle keeps me smiling with a solid roller cam.