I guess one question you could ask yourself is....... how much power would I be willing to lose to be able to put 200 passes on the motor and be reasonably sure its not going to break/damage something in the valvetrain?
If the answer is “0”, then you’ll have to keep trying to sort through your issues.
But if the number is something more like 25-50hp, then I think you could scale back pretty far on the cam/spring package and be in that area.
As an example, one of my customers had a 770hp 557 with a .660 roller, 1.5 Crane golds, springs that were 240/550, on SR heads.
After freshening the heads multiple times, when the entire valvetrain had about 1600 passes on it(and everything still looked fine, springs still tested good, etc), I was finally able to get him to replace it all before something broke.
1600 passes without a breakage.....I need to send you my pile of parts and have you clone that build Dwayne.....Talked to you about the 440-1 heads and T&D rockers a few weeks back. I cant seem to get more than a few hundred on mine and something breaks. Probably like you say with the aggressiveness of the cam.
