370ish whp, do you think it can be done?
 

Hey guys,

I love my Z, sure if you look through the forum you'll find a few guys with issues, complaints, and such but I'm an absolute fan. So my build buddy and I have been thinking, how close to 400whp N/A could we get? Fast Intentions is coming out with a great part in the LTH and will free up some power otherwise lost with a headers/test pipe combo. Add a good true dual, intakes, pullies, clutch/flywheel and most importantly a great tune I think 350-360whp if not more is possible. So I figured I'd get your opinions, feel free to post any ideas or theories short of F.I. that could help!

Not possible, have to go FI.

Maaaayyybe a stroker kit and $15k will do it, not likely.

It could be done but not at a cheap price. You might as well buy a supercharger than try to go NA. It would take more than what you have listed to get to 370 to wheels. Even with agressive tunes and crazy timeing of the motor you wont get to those numbers with the parts you listed. Thats if you talking 370whp.
Go forced induction bro, you drive a nissan.

so 330whp at most for NA? i am just guessing,

Yep, we had a discussion in the premium section about this and with a NA 370z you can probably get 340 to the rear wheels before you start spending to much money and should just got forced induction.

I'm hoping to go F.I. but I was thinking I might enjoy this summer N/A, I'm going to wait till a few people have the upper stages of the GTM and Stillen kit before I jump in. I believe that atleast one if not both can get me to 500whp.

The Stillen kit should be able to hit 500whp, question is whether the engine will be able to handle it. We're going to find that out sooner than later when Stillen releases their race and tuner kits.

If you are going to stay NA this summer, my suggestion to make the car that much more enjoyable is to get a lightened pulley and flywheel. Make that thing rev!

I agree, that is my plan while waiting to do FI.
Still need that damn oil cooler, but pulley and flywheel are on the hit list.

are the NST pullies worth it? Granted they aren't expensive pieces, but you'd still have to either pay or an install or rent a pulley pulling tool and a new built, seems kinda useless for 5whp.

I don't have them so I obviously can't answer from experience. Pully swaps are really more for quicker engine response rather then higher HP. Also you don't need to rent a pully. You can buy them for 7 bucks.

http://www.opentip.com/Tools-Auto-In...p-1178088.html

still can't justify getting them, maybe after i finish the exhaust, cf work, and clutch/fly I'll revisit the idea.

I hit 'yes,' before I realized he's talking wheel hp. I think you could do 370 hp at the flywheel, n/a, but it would take a lot of work and money. But not wheel hp. So I guess my answer is 'no.'

I started at 250whp and im now at 310whp. Thats 60whp over, even if we went 1 to 1 hp to whp, starting from 330 I'd be at 390. So yeah easily possible to do 370 bhp.

yeah, easily done at the flywheel, no way at the rear wheels without massive infusions of cash.

With my mods, the long tubes + pulley, and re-tuned, should be able to get close to 350. That would put you over the 400bhp range, then you might stand a fighting chance against the new 5.0 Mustang, im looking forward to giving it a go.

Maybe ported/polished heads? Titanium engine bits? (probably stuff that doesn't even exist yet for the VQ37 for all I know). I just don't see the OP getting his wish.

At what point would the clutch need to be changed to handle the increase in hp/tq?

Thanks!

Well, the 5.0 is not going to be putting them into the 11s.
The Mustang is rated just over 400 and we have not gotten official rear wheel numbers to see the power loss, add in the weight, and other things and it is still close. Heck the new Camaro SS has a good 100hp over us and it barely wins in a straight line.

Remember guys, just because we cannot get 400rwhp does not mean we are slower, after you get going on power look into weight savings a bit maybe and better suspension or braking. Just because it does not add to your power band does not mean it is bad.

I agree, yes the new Mustang will be fast but I can't see it running faster than mid to low 13's and that's magazine numbers. Real world drivers will not run those times, a Z with the mods I've named thus far shouldn't have a problem with the new mustang, if the Mustang weighs around 3600lbs which would be pretty light for an American car it would give the Z's with sports packages around a 300lb advantage, and that is a lot.

I just want my Z to be able to stack against M3! 350whp should be able to beat a stock M3

crack the vvel, polished and ported heads, all bolt ons possible, I would imagine it may put you in that range, always try new pistons etc... but then you get in the price range of the S/C system... I think it would be sick to see a full on N/A build with a goal of over 375WHP

a little less than 350whp would be more than enough, e92 M3's have put on considerable weight, they are no longer the raw GT cars they used to be.

Nope.

From my dyno today...
http://farm5.static.flickr.com/4012/...b454d0b3_o.jpg

It just ain't gonna happen without FI.

Is that flywheel or RWHP?

rwhp because i think killerbee has all the bolt on's including jwt clutch and flywheel.

LTH's are probably good for another 4-7whp, but regardless those are still really nice numbers. I believe those are the highest documented N/A numbers.

It completely depends on the dyno, I could go on a dynapak right now and make 350rwhp easy. They read so high. Dynojets read a bit high too, I'm probably at like 330whp on a dynojet. The dyno I used (Mustangdyne) reads more accurately when you consider the whp/weight vs. performance figures (performance seems to match what you would expect 310whp/3300lbs to do). If I were to dyno on a dynodynamics I would probably put down 300 or less because those read low.

So you have to know which dyno you are talking about. This is my rule of thumb:

Dynapak: +15%
Dynojet: +10%
Mustang: 0 (base)
Land&Sea: 0
DynoDynamics: -5%

I don't know the numbers, but I have a hard time believing that would beat the BMW V-8

Those are dyno graphs, rear wheel.

Don't ask me how I know, but my car is as fast if not a little quicker than an e92 M3.

I'd pretty much agree with those numbers. factor in temp, humidity, air pressure and there is even more variance. Makes me feel good that my car in stock trim pulled 278.5 on a Dyno Dynamics, proper break-in ftw.

278 on a dyno dynamics stock? Sure about that? Mine (and most others) pulled about 250 on a mustang. The DD should read even lower. 278whp stock is very dynojet.

I don't find that surprising, one of my first runs was with a black e92 m3 stick. It was a total driver's race and and I ended up holding on for a yard on both runs.

Everyone knows the magazine number but in the real word it's beatable.

yay, 370z>m3

lol I'm just saying it can be done and has been done. I think the m3 is great but its no longer the raw fast fun car it used to be. That's what happens when a car succeeds in the market, they try to make it enticing and pleasurable to the entire population rather than us fanatics.

Well, what about valvetrain work....like new cams, camshaft, cam gears? I know back in my Honda days, those mods would produce substantial gains at a reasonable price. BUT of course the bigger the engine, the more expensive.

What do these sort of mods produce on the 350 and at what cost?

Correct! The only thing I don't have is the LTH but I believe those actually LOSE power according to some previous testing.

I want to see it. True the dynapack reads higher because you're not rotating the unsprung weight of the rear wheels however I don't think you'll hit 350 easy. I put down 315 on a dyno dynamics which is yet another "heartbreak" dyno according to some.

The good think about the dynapack is that it gives you an accurate rwhp... as in, the power that is hitting the rear wheels. Not power to the street.

Correct again. ;)

I'm not going to get into an argument here but I've seen dynapacks read as much whp as the car was supposed to have bhp, they are all over the place and usually read too high to give any indication of real power. I'm not sure why you think that's a good thing, I guess if you wanted to know an inflated number of what the car is putting down without wheels and tires on, only drivetrain loss, then that would be good.They are just notorious ego boosters in every car community I've ever been on.

315 on a dyno dynamics is great though, that you can definitely be proud of and is a much better approximation of the power your car is making.

Moving on.

Agreed

You might be able to get close with.
Pistons, ti springs, rods, ti p-pins, CB, HFC's, Header, cold-air, very agressive engine time-ing and tune, with a 9k red line.
You could get there for sure with a stroker kit.
VQ engines react well to boost so there is not reason not to go that route.
But still not as cool as a sc or tt with less hp for around same price as sc.