Jim Wolf Cam testing for the VQ37VHR -- Results inside!

derraj06

Based on the results of my car it is likely the cams themselves can continue to make power past 8k. Unfortunately, there are multiple issues in the VVEL system that need to be taken care of first before you can safely rev the heads past 7900 RPM. The rod bolts also become suspect above 8000 RPM so it is best not to spin one that high.

That said, I am working on getting the parts needed to safely increase the rev limit but the parts for the VVEL system do not exist at the moment. MA and JWT are working on this now.

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Elmo370z

1slow use BMW m5 rod bolts to rev to 8,200. Don't know how reliable it is at that range but the car is still on the road.

derraj06

Thee are nissan rod bolts available that will do the job from what I have researched. That's no issue. I'm just not going to rebuild my bottom end until we can continue the work in the heads.

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chuckie311

hopefully they will have something by next year..i was planning on doing this in April or May..but i will delay if needed.
thanks for the info..hopefully Daelen from MA can comment on when they think they might have the parts available

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Tuned by (Seb@Specialty-Z)
2011 G37 Cam'd FBO 347whp 280wtq Corn Fed 4.08 Gears

derraj06

As of before Daelen left for vacation there is no current ETA on those parts. I check in on that probably more often than I should lol. There will also be a little bit of a learning curve and experimentation as to if one part will fix more than one issue or if it will require something else.

As far as I have found and they have told me, no one has rev'd these heads over 8k safely for any length of time. Will be fun new territory when the parts required change sorted out.

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