Can you get to 400 without turbo or super-charger

MightyBobo · 02-26-2009, 05:31 AM

Quote:

Originally Posted by Crash

Meh. It's a pretty much maxed out N/A motor, but makes a good twin turbo motor.

FWIW, there's a reason the new LS9 isn't the 7.0L, but the 6.2L heh. They found that under boost, the LS7's sleeves didnt take it quite as well as the LS3's did. So, rather than run lower boost without much room to expand in the LS7, they decided to go with a REALLY strong forged 6.2L LS3 setup boosted to high heaven. People will swap the pulleys on those and make north of 700 HP in no time, it'll be a joke. Thats not to say that other LSX 427's cant handle it though

. Here's my buddy from Omaha's current project: http://www.neufamily.org/images/67novagallery/. Some people who read Hot Rod magazine will recognize him as the guy who had the big single (eventually becoming a TT) Blue Silverado that won the first Drag Week, and then won again the next year in a different class.

As for the LS7 being weak...the stock valvetrain in the LSX series has usually been hailed as one of their strongest points, so I'm a little surprised - its always possible that particular one was flawed...as you said, the 2nd's holding strong right? But the other guy's right - look at anything powered by a Wankle - Apex seals what? May as well become an ASE certified mechanic before you buy an RX-7/8 heh...

And Ninja - no offense taken, my other message board thrives off of its Gloves-off section. I probably went a little overboard anyway. Maybe I just learned fast that street racing is really overrated, I don't know heh. High horsepower cars were really cool to me at one point...now, I see them as purposeless unless they can actually put the power down to the ground with a reason...

RCZ · 02-24-2009, 06:13 PM

Really? You should check out some RX-7's . Not to mention you can blow anything if you drive it stupidly enough.

shumby · 02-24-2009, 10:40 PM

almost time for a kitten pic so everyone thinks happ tho0ughts. OH hell here is one anyway.

Q_USAF · 02-24-2009, 11:23 PM

For all the information and great feedback. Keep the info coming, this thread is going to help alot of people out, current owners as well as future ones. Actually this may prompt people to buy, with all the mods coming out.

JoeyD · 02-25-2009, 10:16 AM

I don't know if I would consider a high compression V8 a good canidate for turbo. The one I watched go was rev'd to the limit and the valve train essentially disentegrated. Who cares if it's hand build if it just spins itself apart. That being said GM handled it well and as far as I know the car is still going strong on motor #2. Also, if I had the money I would have a hard time choosing between Godzilla and a Z06. The Z06 is just so much fun to drive.

Kyle@STILLEN · 02-25-2009, 02:12 PM

Quote:

Originally Posted by JoeyD

I don't know if I would consider a high compression V8 a good canidate for turbo. The one I watched go was rev'd to the limit and the valve train essentially disentegrated. Who cares if it's hand build if it just spins itself apart. That being said GM handled it well and as far as I know the car is still going strong on motor #2. Also, if I had the money I would have a hard time choosing between Godzilla and a Z06. The Z06 is just so much fun to drive.

Lingenfelter has done some pretty amazing things with turbo's on the Corvette V8's. Ford GT owner's are pumping out 1,400 horsepower with stock internals out of their 5.4 liter V8's with twin turbo kits.

ALOT of the sandrails and dune buggies I've seen run twin turbo LS or Northstar V8 motors. Twin turbo V8's are an absolute blast!!!

I think for the most part you're right about non-built V8's and twin turbo kits not being a good match but if everything is built right then they can be a lot of fun.

Crash · 02-26-2009, 09:26 PM

Yeah. Leno did a twin turbo LS7 in a grand torino a while ago. It made 1200hp. I have a few friends that have done the same thing.

I knew that they went to a 6.2 because it was stronger for the LS9, but the problem is that they can't get that motor to hold it's boost (is what I'm hearing). But if you're willing to spend 21K on a motor, then the LS9 is the way to go.

MightyBobo · 02-27-2009, 06:08 AM

Supergoji · 03-04-2009, 11:35 PM

rotories are awsome engines. people just dont know how to take care of them.
they do amazing in racing.

MightyBobo · 03-05-2009, 06:24 AM

Quote:

Originally Posted by Supergoji

rotories are awsome engines. people just dont know how to take care of them.
they do amazing in racing.

That still doesn't make up for the fact that they are gas-sucking, torque-less wonders.

I have a friend back in Omaha who has a single-turbo in his FD. Nice car. Think it puts down a little north of 400 to the wheels. Still blows apex seals all the time. And I KNOW he takes good care of it...

BTW, the racing rotaries (3-rotors, yes?) are CONSIDERABLY better than the ones you find in production cars I believe...

KingDavid · 03-07-2009, 02:03 AM

Quote:

Originally Posted by Q_USAF

Can you get the 370 up to 400 hp or as close as possible. Without being turboed or super-charged. Please list out the parts or modifications if possible.

Click the link. ~350whp.

Final Dyno Numbers - MY350Z.COM Forums

If they can make ~350whp (mustang dyno, low reading) on an Intake, header and full exhaust and a COBB AP tune on a vq37vhr(the motor in the 370Z/G37)...I think it's possible to hit ~400 with some nitrous...

KingDavid · 03-10-2009, 02:18 AM

Quote:

Originally Posted by welderz

I won't say it's impossible but it's highly unlikely. The vq37vhr is putting out almost 90 horsepower per liter stock. LS motors don't come anywhere near that from the factory therefore they have more room to easily add horsepower. This is the biggest limiting factor in modifying the 370z for n/a. The vq35 is hard to even get to 300rwhp with full boltons and cams. The vq37hr has a definite advantage with vvel but no one knows yet what it's capable of I'm very optomistic about it. I don't know yet but I think 340rwhp is the limit with full boltons and a tune. High compression pistons won't give too much of a return considering your starting at 11-1 compression ratio and you will need race gas and engine longevity will be drastically cut. The heads already flow extremely well so a port and polish will help but results won't be drastic. If your shooting for 400rwhp n/a it's going to be very expensive and your engine won't last the life of the vehicle. I know you want to go n/a but FI is the better way to go. Many 350z's have been running for several years with superchargers and turbochargers putting down 400rwhp on the stock block. And the vq37vhr has been torn down and inspected by several shops and it has a proven stronger bottom end so I think it might even last the life of the vehicle at 400rwhp on the stock block. The cosworth engine is a bad benchmark to go by that's a race engine that would cost a lot to reproduce. Just so you know I'm a member over at my 350z so I have some background in the vq motors.

Read the quote.

Quote:

Originally Posted by KingDavid

Click the link. ~350whp.

Final Dyno Numbers - MY350Z.COM Forums

If they can make ~350whp (mustang dyno, low reading) on an Intake, header and full exhaust and a COBB AP tune on a vq37vhr(the motor in the 370Z/G37)...I think it's possible to hit ~400 with some nitrous...

(Ignore the nitrous part) That's with basic boltons. I don't know what full boltons are to you but I/H/E and a tuned AP isn't much. ~350whp (or was it 340???). Anywho, they didn't push it on the tune so there's some more left. Also, there's a few more boltons they can add to that to increase the power.

What other boltons can be added to increase power? Intake manifold? Pulleys? What else? Ignition? Switching to E85?

KingDavid · 03-07-2009, 02:06 AM

That's funny. The link is even posted on this site...Yet everyone in this thread missed it. Wonderful, lol.

http://www.the370z.com/vq37vhr/657-w...pect-370z.html

MightyBobo · 03-07-2009, 06:45 AM

Whats funny is that we aren't talking a nitrous-ed setup, here. We're talking N/A 400 WHP...

Apparently, you missed that

KingDavid · 03-07-2009, 09:33 AM

Quote:

Originally Posted by MightyBobo

Whats funny is that we aren't talking a nitrous-ed setup, here. We're talking N/A 400 WHP...

Apparently, you missed that

He said without turbo or supercharger in the original post and in the title, that's why I quoted it...So why not nitrous? Those boltons and a tune = ~350whp. Add a 100shot and he's met his goal.

Either way it seems possible with a MILD build. Full boltons with some cams and valvetrain might be able to put him at or near the 400 mark.

I don't know why some of you think he'd need a forged block or something if they made ~90 whp above stock on Intake, header, exhaust, and tune...

02-24-2009, 06:13 PM	#2 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1120	Really? You should check out some RX-7's . Not to mention you can blow anything if you drive it stupidly enough. Last edited by RCZ; 02-24-2009 at 08:43 PM.

02-24-2009, 10:40 PM	#3 (permalink)
shumby Captin Canuck Join Date: Dec 2008 Location: with your mom Age: 46 Posts: 6,288 Drives: your sister Rep Power: 238	almost time for a kitten pic so everyone thinks happ tho0ughts. OH hell here is one anyway. __________________ Originally Posted by SAM@GTM Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living . Sam

02-24-2009, 11:23 PM	#4 (permalink)
Q_USAF Base Member Join Date: Feb 2009 Location: San Jose,CA Posts: 28 Drives: 2006 Touring Rep Power: 18	I want to thank all you guys.. For all the information and great feedback. Keep the info coming, this thread is going to help alot of people out, current owners as well as future ones. Actually this may prompt people to buy, with all the mods coming out.

02-25-2009, 10:16 AM	#5 (permalink)
JoeyD Enthusiast Member Join Date: Jan 2009 Location: Raeford, NC Posts: 305 Drives: 09 NISMO 370Z Rep Power: 188	I don't know if I would consider a high compression V8 a good canidate for turbo. The one I watched go was rev'd to the limit and the valve train essentially disentegrated. Who cares if it's hand build if it just spins itself apart. That being said GM handled it well and as far as I know the car is still going strong on motor #2. Also, if I had the money I would have a hard time choosing between Godzilla and a Z06. The Z06 is just so much fun to drive. __________________ When was the last time you did 230MPH in something with 4 seats?

02-26-2009, 09:26 PM	#7 (permalink)
Crash A True Z Fanatic Join Date: Dec 2008 Location: Los Angeles Posts: 1,853 Drives: 02 Corvette Z06 Rep Power: 591	Yeah. Leno did a twin turbo LS7 in a grand torino a while ago. It made 1200hp. I have a few friends that have done the same thing. I knew that they went to a 6.2 because it was stronger for the LS9, but the problem is that they can't get that motor to hold it's boost (is what I'm hearing). But if you're willing to spend 21K on a motor, then the LS9 is the way to go. __________________ 2002 Corvette Z06 - Totaled 2003 Corvette Z06 50th Anniversary

02-27-2009, 06:08 AM	#8 (permalink)
MightyBobo A True Z Fanatic Join Date: Feb 2009 Location: Las Vegas, NV Posts: 8,465 Drives: No cars; only bikes Rep Power: 54

03-04-2009, 11:35 PM	#9 (permalink)
Supergoji Enthusiast Member Join Date: Dec 2008 Location: Westchester NY Age: 37 Posts: 311 Drives: Z32tt / Supra tt Rep Power: 258	rotories are awsome engines. people just dont know how to take care of them. they do amazing in racing.

03-07-2009, 02:06 AM	#13 (permalink)
KingDavid Base Member Join Date: Mar 2009 Location: Miami Posts: 176 Drives: A car Rep Power: 18	That's funny. The link is even posted on this site...Yet everyone in this thread missed it. Wonderful, lol. http://www.the370z.com/vq37vhr/657-w...pect-370z.html

03-07-2009, 06:45 AM	#14 (permalink)
MightyBobo A True Z Fanatic Join Date: Feb 2009 Location: Las Vegas, NV Posts: 8,465 Drives: No cars; only bikes Rep Power: 54	Whats funny is that we aren't talking a nitrous-ed setup, here. We're talking N/A 400 WHP... Apparently, you missed that

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