I am upgrading my camshaft in my 540. Going from a 650 lift (250-260 dur)
to a 714 lift (260-270 dur). This is a Shafiroff motor and they sent me a
upgrade kit (Cam, springs, retainers, ect-things I can change without pull-
ing motor). Should I also replace lifters, trying to save a buck but if they
should be replaced, no problem. The current lifters have approx 5,000
miles on them. Also wondering if rods should also be replaced. The cam is
a solid roller. Thanks!