you probably also work with mechanical taps? hydrolic taps are limited tot +/- 7500 rpm.
i am still on hydro followers, raced 2 seasons, engine built in 2005 and ran to a previous 8200 limiter, now 9000rpm - yes i know i am pushing my luck and building a spare engine.
supertech valvetrain, springs and valves, Ti retainers etc.
{wonders off to touch some lucky wood}
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mechanical lifters on next engine<< more sensible