Posted June 6, 200717 yr comment_211430 Yes well, hmm Some of you said it wouldn't work, see old posts by SmokingWheelsI still had to prove it for my self though.I'm not game enough to push my stock L series engine past 7500at this speed the valve train just starts a light cardac arrest.This level of arrest was prevously 7100.However it will go ~100-200 higher, before things really stop working,I dont want any windows in my block again, Ive read that peak intake veloicty is good to about mark 0.5Apply the Golf ball therory to the valve,So how heavy is the intake valve now at that speed?1. lighter valve springs for same rpm2. more rpm for the same springs and running gear3. a little analog mod ????? well classified information....ATMHave I just removed excess/uneeded mass from the valve itself?PS in granny mode on the HWY 4.72 L/100 is my best in summer (59.1 MPG)."Anything above 45 MPG you need to tempture compensate the volume of fuel out of the pump"Cheers Greg Link to comment https://www.classiczcars.com/forums/topic/24517-golf-ball-300-to-400-more-topend-rpm-now/ Share on other sites More sharing options...
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