Originally Posted by maxxcool

I am not even going to read the expected flame fest that is below. but here's my 2c from the interwebs.

550 is to much, you do not mention the model, so likely your not LSD, you will need to buy and install one. I DEEPLY and STRONGLY suggest not going over 3.5FD. you will just melt your tires and end up in a ditch.

Shoot for 400 at the wheels and SERIOUSLY go to a driving club that has classes.. the g35's LIKE to kill their drivers. I am not kidding.

Twin turbo sounds awesome. but unless you are installing it yourself you will need around 20k to start buying parts. BTW you will >*no*<t install a TT to the 'current engine'. it will simply explode after your second drag race. you need a new bottom end.

the current engine is scrap. go IPP, or not at all. you need it all... after-market rings, after-market valves, after-market remanned heads, after-market exhaust, after-market intake manifold, after-market intake, engine bay hard modification,

here is a block for 7k$ that's 'decent' http://www.the370z.com/importpartspr...at-prices.html

engine 7K
manifold and intake (matched) 1k
full exhaust 2-3k
ECU and flasher and tuning software 1-2k unless you have someone else do it.. then its 600-1k

then the TT kit .. and everyone will have a opinion .. but here's the take away . if your not spending 10k. your GOING to have a blow up, and start over.

all in all. my opinion being 2c grain of salt and the internetz. this is the wrong car to go full tt on unless your flush. And I mean you have 30k sitting in the bank flush that you can spend without remorse.

300-400 is 'ok' for REBUILT TO SPEC stock.
400+ can and likely will cost you upwards 3-4k a year in broken parts and fixit projects in addition to running 15$ per quart oil, and tranny fluid.

oh I did forget you will need a new massive tranny cooler if you live in a hot zone.

if you have the 30k... go IPP and find a infinity pro-shop that's within driving distance. go visit the shop BEFORE buying a single part.. don't get a good vibe, move on.

note, not being a dick at all. **these cares are expensive to TT ... when done RIGHT** .. and sexy ****ing awesome when done..

Originally Posted by evil00017

My 2 cents are get a good running low miles stock engine swap it in and stay at 400whp and stay reliable. Totally understand the idea of making a fast sedan I just think you will end up spending a lot more money than its worth and a lot more headache. 400whp will still surprise a lot of cars. Spend the extra money on a faster none DD.

Originally Posted by andrewvk

just do a 5.3 swap. you can do this for relatively cheap. make really good reliable power and not break anything. including the bank.

Originally Posted by andrewvk

yes and no on the small block part. the 5.3 is the lsx based engine so the outside dimensions are all the same. so small block big block isnt really a thing anymore.

now on the older motors. the difference between small block and big blocks were much larger. you couldnt interchange parts.


but you can pick up an iron block 5.3 for about 500$ do a cd009 adapter, and put together your own engine mounts. long tubes. fluids. harness, ecu and a tune. you will be in for about 5-6k to get the motor in and running if you are buying off the shelf parts. but you will be looking around 350hp and gobs of torque. staying NA you cant beat it. as well as having a big motor in a smaller car, you will be getting better mileage than you would with your 3.5

my ls1 240sx net me over 35 mpg highway and high 20s in town. cant beat it. im putting together my 5.3 g35 this winter. shooting for 400hp. will be reliable, cheap parts. and better fuel economy.
you try getting 400hp out of a vq and have it be remotely reliable. just not possible.