TwinTurbo.NET: Nissan 300ZX forum - Serious Performance Cam Question
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Subject Serious Performance Cam Question
     
Posted by mongooze on June 08, 2008 at 9:25 AM
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Message Okay, so im in a pickle. I have a z32 converted to tt with an auto engine. Upgrades consist of, ash ecu, ebc at 15psi, jwt pop and FULL exhaust with xpipe and I was getting 110 traps at the track, times were all over the place due to traction issues, and I was beating...okay barely like half a car in front various cars on the street including c5 z06s and slighty modded cobras, all on 40 rolls.

New mods coming, l/w pulley and flywheel and 18psi.

Now since my crash the motors out and I've decided to do some minor things, performance stuff including gasket matching and POSSIBLY, m/t cams and turbos, Now here comes my question.

Which setup would be the best?

So far I've learned that the auto z is quicker than the manual up to 100mph BUT is that just because of the automatic transmission.
Auto turbos spool quicker (but with auto cams)
Manual turbos flow more on top but with manual cams

I could
A. leave it alone, call it a day.
B. M/T swap, cams and turbos
C. A/T cams, M/T turbos
D. M/T cams, A/T turbos

A. The pulls likes a beast But if I can improve it, I would like to.
B. 20 hp is guarenteed with this setup but where does it come from mainly? turbos or cams?
C. Here's somethings I picked up in UTI while playing with nitrous from the instructor. They used a different rocker arm on the exhaust side to make the rocker arm ratio greater to give more valve lift on the exhaust side only and it worked giving it more power (this was on small block chevy 350s with heads/cams and 250 shot of nitrous) which since the air is being forced in , the greater lift on exhaust helps rid of the exhaust gases quicker to reduce dilution of the new incoming forced air.(less exhaust gases in the cylinder, more air to fill the cylinder meaning more air to burn equalling more power) Now the auto intake cams are 240 duration and exhaust are 248 My question is can this theory be appied in boosted applications? Now I don't have a flowbench or any research/experimental equipment to test any of these therioes.
D. Not sure about this one.

I'm most likely going to go with m/t turbos so my question really is. Manual or Auto cams? on Manual Turbos?

     
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