| My data logging showed a gear shift at 8700rpm, I think it was the previous owner not me. There is no power gain at those high rpm. Solid lifters should get you over the 8000rpm easily but to take advantage of that would require really large turbos, which preclude the advantage of the wide rev range. If you are serious about the high hp and high rev you need to step away from jwt, there is a nice set of tomei head gear for sale in classifieds, but really you need to be at the custom cam stage. To get those levels of rpm you need solid lifters and titanium rods - not Carillo. But the vg30 is turbo, why bother with high "explosive" rpm levels when you can make 1000hp with boost? Makes no sense. All you are doing is risking the very expensive head components. I am the test bed for the Dailey Eng dry sump system and will post info when closer. Bill is trying hard to make it fit the stock Z setup with minimum changes. I understand your approach re R & D to find the limits of the Z engine, but really the engine is too expensive to properly test on. Its cheap to blow up ten 350 chevs finding limits, but try doing that on as VG30 when you have to replace everything each time. I am doing a basic rebuild on the red race Z and I know what it costs. Can you afford to make multiple $20,000 engine errors finding out what works and what doesn't? Becuase each time you have to buy the best of what there is just to find it doesn't work and smears it all over the place. If you can afford to throw that sort of money at Z R & D, then my cars need some sponsors - I have lots of space for stickers all at very reasonable rates.
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