TwinTurbo.NET: Nissan 300ZX forum - Re: Worth swapping auto->5spd cams and turbo housings?
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Subject Re: Worth swapping auto->5spd cams and turbo housings?
     
Posted by mongooze on April 26, 2009 at 6:33 PM
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In Reply To Worth swapping auto->5spd cams and turbo housings? posted by my91z on April 26, 2009 at 03:26 PM
     
Message I've had this dilema before, and I never got a good answer, but I ended up just leaving the auto cams with 5sp turbos.

yes the autos spool quicker, but drop off in higher rpm, with 5sps you would be able to push it to 18psi better.

FYI: cams are only different on intake (240) everything else is (248)auto ex and 5sp in/ex. I did have a theory on this.
In class we ran small block chevys with nitrous and used higher rocker arm ratio on exhaust to help it breathe because the air (nitrous) is being forced in the intake but not forced out on the exhaust, so the R.A.R. actually helps it breathe and undiluting the mixture.

again I don't know if this can be applied to boosted applications I posted a thread on here and never got a decent feedback from it.

also for the turbos you can just swap out the turbine housings, the wheels are the same size.

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