Former Z Owner's Rant about the 370z

mhcoss

I don't think anyone boring out their engine is really concerned about fuel efficiency

UNKNOWN_370

True but my point is it costs $8000 to bore it out. How much power you think a v6 will get on a naturally aspirated 4.5L V6? What would torque be on a 4.5L v6? I imagine torque ratio would be horrid without FI. At least with FI and a boost controller you would at least get the amount of power that's warranted for the amount of fuel used.
So let's say after boring it out, you decide to FI to level things out some. You are looking at 12k minimum to the 8k. At 20k+ you can get a factory GTR motor that will give you less problems overall. Then other supporting mods... that will be a 30k engine to make it run well. It would be more efficient and cost effective to attempt an LS1 swap. (If possible in the Z)
Not worth it imho but that's just me though. I guess thinking like someone who just likes experimenting with shyt? It might be a fun thing to do for some?

mhcoss

Yea I'd be curious what kind of NA numbers are possible from it. I think the point of this kit though is for high end setups. If you bore the engine and FI your going to be far ahead of the GTR in terms of power...

GTM’s 1000HP Z

UNKNOWN_370

True


I can only see it being worth it with fI though. NA 4.5 v6? Why? Just go to v8 from there and save the trouble.