HP/L who cares???

[RiceRocket]

Originally posted by bluevette74
im not sure but the reason big engines like 5.7l have a hard time creating big hp/l numbers is because they dont rev as high as imports, if youll notice on vettes red limit is like 6000rpms but imports are like 8,000rpms. But dont worry you import fans, camaros and f-birds arent gone forever they will be back in about 5 years or so! so until then youll have to watch out for those ss's, cobras, z06's and not to forget the vipers! oh yeah and the next time you pull up to a domestic and its shaking and loaping i wouldnt mess with it!:sun:

in five years our little rice rockets are gonna be ready so watch out! :silly2:

reason why imports rev high (not all though only honda mostly) is because they need that to reach the high hp for a small displacement vehicle... and they got that technology from making motorcycles. just like toyota partnering with some other motorcycle manufacturer to make their high revving celica's... but most imports don't rev that high tho.

and what sucks is that import counterparts for camaros, vettes and vipers are too expensive already! so you only have to settle with new civics to smoke your guy's ass... j/k

[RazorGTR]

Originally posted by bluevette74
oh yeah and the next time you pull up to a domestic and its shaking and loaping i wouldnt mess with it!:sun:

I would and off the line I would shit all over it. At the end of the day it is all about nothing much but bragging or a form of comparison.

I have owned a 1,400 650 cid street/drag car. I now own a fun car that produces a hell of a lot less but is so much more fun to drive around in.

Oh and for the record the hp of the GTR is more than posted I have had my fair share of goes with 5.6lt on the track and have not lost yet. Relax though as it is interesting to see how different engines respond to different types of tuning and upgrades.

[AEstud]

first off...what is hp/L?

[RiceRocket]

Originally posted by AEstud
first off...what is hp/L?

horsepower produced per liter of the engine

[shrubchild]

Originally posted by NB8CT
It matters becuase it shows that the people who made the engine actually THOUGHT when they built it. They though "how can be get every ounce of power out of this engine" they didnt just say "lets make it huge displacment cuz we dont wana sit down and figure anything new out, thats too hard". Really man lets take the classic hp/L example the Honda S2000, makes 120hp per liter, lets say that your "mythological" 7.4 liter engine made 120hp per liter, lets do our math, thats 888hp, screw your paltry "400HP'
And your calculations below negate what accually matters more than horsepower, torque. Lets look at another example: a stock 240sx has 127hp @ 5000 rpm and 135lb-ft @ 4000rpm and a stock civic si has 123hp @ 7500rpm and 93lb-ft @ 6000rpm. Now I would bet that even though the 240 is heaver it would wack the si off the line, and beat it in the 1/4 becuase the massive gap in torque.

couldnt have said it better myself

[flylwsi]

actually... bluevette... hp/l has nothing to do with the redline. it simply has to do with how efficient your motor is. you have a low redline in a big motor car b/c it is not designed to be revved that high. in other words, the valve train is either too heavy, or not designed to rev that high. that is why the lt1 zr1 motors revved so high, b/c they had lighter, faster moving overhead valve trains.
the cobras are the same way... you can design a 4cammer that spins high rpms... b/c it has a lighter valve train... it wont be as high, b/c the rotating mass weighs more overall (compared to a 4 cyl)

but, i do know some well built old skool 5.0s that rev to an unheard of 7500...
and the vettes and mustangs of the 60s used to rev high...
i know of vettes that revved to 8 or 9 stock, and mustangs that had rev limiters at 7k b/c they would simply spin themselves into oblivion.

all that hp/l means is that you are efficient. ferrari is very efficient, high hp/l. same idea... they dont make much over 4liters...
and i believe that even a lambo with a big 6.something liter revs to 7200... but that is a 4 cammer too... it is in the tech that is used...

[bluevette74]

so you say that you've never been beaten by a 5.6l well mine is a 5.7l, and i got a pretty little pink slip that says my vette can make your skyline my bitch!

[flylwsi]

in other words, the most efficient use of airflow is the biggie, as well as light strong parts...
on an older motor, the best performance gains come from porting and polishing, new heads, new cam etc, why?
b/c porting and polishing allows smoother, higher velocity airflow. (more power)
new heads generally are lighter, or more durable, and come with bigger valves, to do what? flow more air. (more power)
and new cams, etc(this includes new carb, intake, headers) basically flow more air... cams open the valves longer to (flow more air)


so everything depends on how efficiently you flow air...

and with a dual overhead cam motor, you can adjust each cam independently, making it even more efficient...

the only reason little motors make less hp is b/c they are little. but if you step back to the 4cam zr1 motor, you see what happens when little motor tech hits big motor size...

[flylwsi]

i have money on the skyline. awd, twin turbos, hmm...

and the diff b/n the 5.6 and 5.7 is not that significant... not enough for you to beat him.

before you pull out your pinks, why not find out what he has for mods, and power, and what do you have that makes you feel so ballsy about it?

just cuz you have a corvette doesnt make you god. and you are talking old school vs some nice newschool tech. i would love to see the race. or at least get time slips from both to compare...

[Sindie]

Originally posted by bluevette74
so you say that you've never been beaten by a 5.6l well mine is a 5.7l, and i got a pretty little pink slip that says my vette can make your skyline my bitch!

Hahahahahaha


To who ever asked about why you don't see many 600+ hp domestics, it has to do with costs of operating those vehicles for street use. Someone can correct me if I am wrong but when you tune a car it uses more gas, but this becomes a bigger factor in a car that when already driven in city driving gets poor fuel economy. Yes they still get as good if not better economy on the highways, but in city driving they are that much worse. Also their performance gains are down in the area of normal city driving where as a smaller engine has to be taken to higher revs to obtain these steeply increase power gains. So it should be easier(and slightly more economical) to drive a civic that has 220 hp then it would be to drive a 600 hp camero in normal driving.

[LjasonL]

what i think is funny about rice boys is when they hear a v8 thats going GLUG-GLUG-GLUG with such a big lobe it almost cant idle, they have no idea why they sound like that and theyre like "haha your car can barely stay running my sentra will kill u" and its just funny.

[bluevette74]

ok first of all i would never lay down my slip to my car even if i was racing a stock mustang! I was just trying to flame the guy if you look, he lives in new zealand, and i live in austin tx! so there would probably never be a race. my car probably weighs the same as his if not less, i know that awd is heavy, and so what that he has twin turbos. Their probably stock and pushing 8psi at max "im just guessing by the way, not trying to diss your car", but if you must know the specs on my vette (350 bored .30 over, polished aluminum heads, edlebrock intake, holley 650 double pumper, oversized cam "dont know the lift, long story", turbo 400 tranny, 4:11 pausi rearend! ill post my et's! 488hp 476lbs/ft torque! and you know that power in a fiberglass body has to do some kinda damage!

[RiceRocket]

Originally posted by bluevette74
ok first of all i would never lay down my slip to my car even if i was racing a stock mustang! I was just trying to flame the guy if you look, he lives in new zealand, and i live in austin tx! so there would probably never be a race. my car probably weighs the same as his if not less, i know that awd is heavy, and so what that he has twin turbos. Their probably stock and pushing 8psi at max "im just guessing by the way, not trying to diss your car", but if you must know the specs on my vette (350 bored .30 over, polished aluminum heads, edlebrock intake, holley 650 double pumper, oversized cam "dont know the lift, long story", turbo 400 tranny, 4:11 pausi rearend! ill post my et's! 488hp 476lbs/ft torque! and you know that power in a fiberglass body has to do some kinda damage!

that's some scary power on a fiberglass body... ... twist that thing

[bluevette74]

its not too bad! but i do agree i would rather drive a skyline around town, instead of my vette just because the loap and shake from my cam is very uncomfortable! But if were streeet racing thats a different story all together!

[fastrThanU]

i'd rather have my rearview mirror and seats shakin from my cam at idle, than anything else. a big reason why imports rev higher is that they have far less rotating mass than a large ci V8. with my motor, i picked a small chevy because of the less rotating mass. i can now redline at 6100rpms, make peak HP at 5600, and because it's a V8, i still pull well over 350lb/ft. at 2000rpms. in a dom. V8, changing to roller rockers, lifters, cam, and valves will boost your redline a good deal.