evanpala

Hi guys I drive a 2008 G37s. I like the 330hp that the car has but I would be hoping for a goal of 450-550whp. This car is my daily so it needs to be reliable. My 2 ideas are either a engine swap (what engine? how much would it cost?) Or the stillen supercharger kit. However stillen told me i would only get about 400whp if i boost the vq37vhr (stock internals) for a daily driver. That being said, I heard from wiki motors that forged pistons and h-beams could make up to 550whp reliably. Is that true? If not, then what do I need to get so my engine can handle the boost internally? My question is which route would be cheaper? Fl or an engine swap in order to get 450-550 reliable whp? My concern is cost and not the capability to go past 550whp because at that point the car becomes useless on the road. Thanks! Ps I'm not interested in the tt kit

Crazyirish

If a twin turbo kit is too expensive then so is an engine swap, or a built motor.

Just so we can give you some better advice, why do you specifically want 450-550whp?

4doorfury

iTrader: (1)

There's no limit. The limit is your right foot. Last car had 400whp 450wtq.

evanpala

I think that 450-550whp would make an ideal goal... It's just to be a daily car but to also to have tons of extra on tap power if needed... I would also like to take down most on road cars (most or some!). I might use it for an occasional trackday as well. My I idea is that it can serve as a fast, all around car. I would ask for less hp but I want to make up for the extra weight that the car comes with, I want to get rid of some lbs but I'm afraid I would regret it as I tend to appreciate all the refinement

Crazyirish

You can just edit your original post.

evanpala

Thanks. I'm doing this on my phone.lol

RMB5190

iTrader: (2)

My advice? Get a side piece. AKA - project car.

The G is a fantastic DD and has appropriate power to do what needs doing in any traffic scenario. I read GT350 guys always complaining because they only have 2 usable gears and are miserable if driving on anything other than open highways or clear back roads.

You're already quicker than 93% of the other cars on the road. A Stillen SC might put you on par with a Coyote but I can't see it justifying the cost if you're restricted financially. Remember, there's a chance you're motor will pop when throwing FI onto a NA motor. Everything I've read indicates that power over 450whp is the danger zone for internals. Then, you have to get a trans cooler and oil cooler. If you have an AT, time to upgrade. That's another $5k. Can't neglect your differential either; another $2k.

Forget a motor swap. The VQ is a pretty bada$$ motor from the get-go. When it comes to built applications, from what I've read and my limited knowledge, is they can handle power but at the expense of longevity. So 80k miles max? Unless you're all about the G platform, do some NA mods, to gain another 30-40. Remember, it's 330 before drive train loss so pending the transmission, you're looking at 260-280 to the wheels more or less.

evanpala

Lol I wish I could get my hands on a beater but that's Might not be till later... Let me rephrase my question I can actually afford the TT system but I'm not interested in it. But I'm still down to look at such options down the road

RMB5190

iTrader: (2)

Not a beater....project car. Where if you sink the 20g's required for a proper TT or SC build into the project you wind up with something running 12's or 11's.

You might need a beater if you end up popping the VQ though...so might want to wait until you have one before pursuing a FI build.

So to answer your original question, the Stillen SC can be had for about 4,500-5,000 used. Just need to find one. Install is a 12-16 hr job I believe? So guessing about $6,500-8,000 after install. Need oil cooler and trans cooler so another $1,000-1,500 after install? Then a tune is needed so another 6-800. That's if you don't upgrade the diff and you don't touch the transmission.

So if I had to guess, based off other build and material I've read, you're looking at 10-12k min. for a 400-450WHP SC build on stock internals.

You can throw out the cash for a built VQ rated for 600+ for another $5,000 on top of the above number. If you're serious about pursuing this, reach out to one of the boosted members on the forums. Just make sure you do some adequate research first because a lot of your questions could be answered by browsing said member's build threads....can't miss them.

evanpala

Yeah I would make my g the project car and get a beater... But that's good to know I haven't seen a full cost of installing a sc kit yet... Where can I find more info the z forums?

RMB5190

iTrader: (2)

https://www.myg37.com/forums/build-t...l-worklog.html

https://www.myg37.com/forums/build-t...out-sedan.html

I'd start with these two in order to get a bulk of the info you'll need. Everything else can be read up on the Z forums.

slartibartfast

iTrader: (7)

I would think a late-model Muscle car would be the easiest way to your goal.

evanpala

Okay I tried looking a bit when you say 600whp. What does that include

RMB5190

iTrader: (2)

^ Not sure I follow. I listed everything you'd need to look at upgrading. TT is the only way to hit that figure. To summarize:

TT Kit
Built trans
New Diff
Meatier Tires
Upgrade brakes...gotta stop the thing.
Oil cooler
Trans cooler
Built motor

Labor for all. That's just for the absolutes. You'd probably need to upgrade drive shaft and other components as you go.

kroy

Get the twin turbo instead of Stillen supercharger. You'll find a lot of bad things about the supercharger kit if you do your research. You also won't get those 450-550whp numbers out the box with stillen supercharger kit; you'll have to do some more upgrades to make it work reliably.

Info from Sebastian, one of the most trusted VQ37HR tuners on the west cost. He used fast intentions TT kit on his 370z. He says in his personal experience most everyone who gets the SC ends up regretting it; you won't get the power you're expecting.