Really maintenance would not be bad on this at all.
Shift at 8500 I am not sure how many passes it would go before it might need springs.

Has 65 pulls on the dyno between 8500 and 9000 rpm.

Springs still check fine.


Rocker ratio only 1.8 intake exhaust 1.75

60mm cam and Jesel keyway lifters are solid parts and should give good service life.