rollerlifters.

swinger340 said
Hydrolic or solid? I have a set of the older comp solid rollers in one of my 340s. Oil pressure was lost at around .600 lift. The engine was already done when I got it and runs plenty strong. The builder ended up going with a .555/.566 comp cam to be safe. Pretty mild cam for a solid roller, but that is all the lifters would safely allow.

Thanks thats a good base to look at on this isue,its just a shame that all these blocks are different when it comes to machining and castingprecision, im looking at a few different cams all of them alitle bigger than you current cam but not much bigger,we will see how this turns out;)