Interested in the cam, is it just the cam or the whole kit with followers and lifters?
I think the S60 springs would be overkill on this cam, maybe that's why the S60 cam only lasted so long before the lobes went bye-bye. :bang head just my .02Actually the 813 springs are only good for .460 lift and the cam has .476. I ran a stage 2 taft for a little and have the followers and lifters, that is not the issue. I also have the 061 super 60 valve springs good for .550 lift.