0-60 times

[kingman]

Hi

When ever l read an article about any C4 vette, they usually note the 0-60 times.

What baffles me is that between the 85 and 96 vettes with the normal engines, they all seem to be 5.7 sec's. Sometimes it's a tenth lower or higher.

Now l know that the gearing is a little different and l'm not talking about 0-100 or top end or stopping ability.

What gives since the difference in hp is substantial. Am l missing something?

Alan

 

[Hrtbeat1]

Torque

It's what it's all about. Sure the LT-1 and LT-4 make more horsepower, the trade off is the Torque which the L-98 has in spades. The LT-1 and LT-4's power curve is further up the RPM scale also. Torque gets you going and HP keeps you going. So for a test like 0-60, you aren't getting way up in the RPMs therefore the L-98 does a little better.

 

[kingman]

Tough to believe!!!!!!

The L-98 produces the same torque as the Lt-1 345 but the L-98 reaches it at 3400rpm rather then 4000rpms but the LT-1 has 300hp and the L-98 has 245 hp. That is depending on what year (1988).

What is the weight difference in the real world forgetting about what the spec's says?

Now if the LT-1 produced it's torque at 3400rpms what would the difference be?

Is the answer a new torque converter?

Alan

 

[B17Crew]

kingman,
I had a ’86 auto coupe at one point, I remember the L98’s torque. From the factory with no mods, the car was always enjoyable for me to drive around, I miss that ’86. :cry

I had these L98, LT1, and LT4 0-60 times handy with me here in my office.

L98 Road Test

Motor Trend
April, 1990

Automatic
0-60..................5.7

6-speed coupe
0-60..................5.6

6-speed convertible
0-60..................6.3

--------------------

LT1 Road Tests
Car and Driver
March, 1995
0-60..................5.1

Road & Track
February, 1994
0-60..................5.7

Motor Trend
May, 1996
0-60..................5.6

--------------------

LT4 Road Tests
Car and Driver
September, 1995
0-60..................5.1

Road & Track
February, 1995
0-60..................5.2

Vette
August, 1996
0-60..................5.45

Motor Trend
May, 1996
0-60..................4.9

B17Crew

 

[kingman]

Amazing!!!!!!!!!!!!!

But it makes no sense, but what does anyway, thanks.

Alan

 

[Mart]

why does that make no sense, if you are only concerned about 0-60 times. The only thing you need to worry about is Torque, of which the L98 and LT1 are about equal.

HP is totally irelevant.

Mart

 

[max]

But what is exactly L98 torque number ?
This is actually the questing bothering me for some time now .
And I was under impression that final ratios alter 0-62 time too.
Interesting how much you gain going from 3.75 to 4.smth ?

 

[Hrtbeat1]

My '90 L98 is listed as putting out 350 ft/lbs @ 3200 RPM.

Your '91 should be the same. Our cars are a little different than the rest, the computer uses a Speed Density system rather than a Mass Air Flow sensor

 

[max]

Thanks Hrtbeat1 ! That's even more than I estimated . We here use Nm . That's 475 Nm !!! i thought it was 400 for L98
That's a lot of torque ... spadeloads
Speed density , yeah , MAP and MAT sensors .

 

[Edmond]

Yeah, it's the torque coming on earlier on the L98's that makes the difference minimal. Going 0-60 isn't enough time/distance to need that much HP.

That being said, I still want an LT4.

 

[Skant]

Real LT4's produce better 0-60 times than what's published in the magazines. I mean... come on... in the real world, an LT4 vette easily squashes an LT1 vette in the 0-60 (and beyond). But the magazine stats say they aren't any faster.

I've always wondered about the magazine posted 0-60 times myself. They seem to vary more by the political needs of the time than the actual power of the car. The more I experience in the real world, the less I believe magazine review data.


Btw, hp does matter to 0-60 times. I don't know what makes you folks think it doesn't.

- Skant

 

[Mart]

How does HP rank over Torque for 0-60.

Think about it, my 86 is rated at 230hp 330ft lbs torque

The LT1 is something like 300hp 350 Torque.

That's like 70hp less, I stay side by side with my buddys 95 vert till about 80-100mph.

So where does HP come in TOP END

 

[vetteboy86]

I posted several runs with my g-tech never going over 5.4. Depending on launch, I hit a 5.18. All I have to say is that for a 0-60 car the L98 is awesome, after that, it is down hill. I think my car is in the 5.5 sec neighborhood, but probably a really high 13 sec quater mile car.

I know that the L98 will stay with the LT-1 for a while, but eventually the better flowing intake will get the better of the situation.

 

[Mart]

That's it exactly Vetteboy86, gotta love the L98 for torque.

 

[354RwHpLT4CE]

Yeah, it's the torque coming on earlier on the L98's that makes the difference minimal. Going 0-60 isn't enough time/distance to need that much HP.

That being said, I still want an LT4.

And I want a Zo6!....And a ZR1.....and an L88...and Just being silly,sorry y'all,it was a LONG day.

 

[Edmond]

And I want a Zo6!....And a ZR1.....and an L88...and Just being silly,sorry y'all,it was a LONG day.

Okay, we can compromise. You give me your LT4 and go get yourself a Z06, ZR-1 and L88.

 

[354RwHpLT4CE]

A good idea!

Okay, we can compromise. You give me your LT4 and go get yourself a Z06, ZR-1 and L88.

Hmmm....I wonder if the wife would go for that?:crazy She implied, that may be an option when the divorce is finalized.:argue What do you suppose that means?:eyerole I even offered to buy her a vette too,still no dice. Thats ok,one of the guys at work has to get rid of his nitrous express setup for his LT4(he found a blower and intercooler for $1000!!!:dance )so hes selling me the 250hp nitrous kit for $200(bottle and all!!!) Keep that on the down low,:nono The wife doesnt know yet! Peace!Shannon

 

[Edmond]

Hmmm....I wonder if the wife would go for that?:crazy She implied, that may be an option when the divorce is finalized.:argue What do you suppose that means?:eyerole I even offered to buy her a vette too,still no dice. Thats ok,one of the guys at work has to get rid of his nitrous express setup for his LT4(he found a blower and intercooler for $1000!!!:dance )so hes selling me the 250hp nitrous kit for $200(bottle and all!!!) Keep that on the down low,:nono The wife doesnt know yet! Peace!Shannon

Yep, we'll keep that on the down low even though it's been broadcast to the entire world right here!:L:L:L

I've actually made the decision to sell my '88 to buy an LT4.

 

[Skant]

How does HP rank over Torque for 0-60.

Think about it, my 86 is rated at 230hp 330ft lbs torque

The LT1 is something like 300hp 350 Torque.

That's like 70hp less, I stay side by side with my buddys 95 vert till about 80-100mph.

So where does HP come in TOP END

I've heard the saying before that horsepower gets you top speed while torque gets you acceleration. But the relationship is not actually that simplistic. And when you're talking about actually accelerating a car, the gearing comes into the picture, too. Along with several other practical factors.

The upshot is that peak horsepower doesn't tell you everything about how a car will accelerate. The L98 gets more torque... and therefore more horsepower... sooner in the curve. The peak torque coming in at a lower rpm implies this. If you were to look at the _average_ horsepower generation over the useful rpm ranges between an L98 and an LT1, the number would be very similar, even though the _peak_ horse power is much different.

As you get into higher speeds, the gearing on these cars moves through a narrower RPM band which is closer to redline. The LT1 has a greater 'area under the curve' in this range... which is implied by its higher peak horsepower... and it starts pulling away from the L98.

Ultimately, the numbers and rpms for peak horse power and peak torque are insufficient in terms of determining how fast an engine will accelerate a car. They imply certain characteristics about the power curve, but they don't define it. They can be very deceptive. And it all becomes part of how to lie with statistics on the part of manufacturers... which does lead them to boost these figures even at the expense of real speed.

And none of these figures say anything about the gearing in the car. And gearing has a _huge_ effect on 0-60 time.

- Skant

 

[354RwHpLT4CE]

Yep, we'll keep that on the down low even though it's been broadcast to the entire world right here!:L:L:L

I've actually made the decision to sell my '88 to buy an LT4.

:W Dont sell,just add to the collection!