I’ve been using cam motion kit vsk915326,
for eagle&6.4 there’s room up to 625 lift, over that lift,mill the guides another .060 to .080 and you’re good
pre-eagle, 6.1 top out around .580&.600 respectively, what ever you lift above those # + . 04 for safety.. .623 lift 6.1s would be a min . .065 to start.
reality is .100 is the safe bet.
comp cams positive stop seals for 09+ are also good, again mill roughly.10 off the top to start
I dropped my heads off at the shop on Monday and told them to knock .100 off the guides, glad to get confirmation on it though. the seals I am going with are the comp cams p/n 516, do you have any suggestions on spring locators? ideally I would like to find a set that are .040 thick so I could use my existing shims.