What chanse does a -91 GTA 350aut with (full exhaust k&n filter, ported plenum, afpr, chip and shiftkit) have against a stock -99 trans am LS1 aut. The GTA driver is a realy *** driver, th other one i dont now....... I hope the GTA spanks him but i think its gonne be the opposit...

 

The GTA might have a slight advantage off the line, but after 30 or so it won't be pretty. That LS1 will spank that GTA bad. Even if the LS1 owner can't drive, there is too much of a power difference to overcome.

 

the GTA is running what mid to low 14s,
while the LS1 is mid 13s
I'd say the LS1
biker

 

to bad its the fbody version of the L98. i have all those aforementioned mods (except headers) on my 89 Corvette and regularly beat stock or lightly modded LS1s.
hp isnt everything... ive got about 50+ less RWHP than a stock LS1 but i get to the end of the quarter quicker.

 

i agree with tpivette, hp isnt everything. i raced a ls1 z28 6 spd that has a few little mods and i only lost by 5 cars, thats without full exhaust, afpr, and all those good things. depending on some conditions and how well the gta launches, it could be close for the first 1/8th, but after that im giving it to the ls1. i wouldnt feel too bad, thats pretty good when a little ole' l98 is keeping up with a new ls1. i am giving this one to the ls1 still, but i think it could be farely close off the line. anyways, i do hope the gta wins though, liked to see another win for the 3rd gen. crowd.

BTW, my car is a 91 formula 350, which has a slight weight advantage over the gta

 

if the LS1 goy can drive he should hit low 13's high 12's......

 

My 98 TA is WAY faster than my IROC was when it had full exhaust, chip, afpr, intake mods, free mods, etc. WAY faster. At least a full second in the 1/4. Those 2.77 gears didn't help the IROC much though.

 

Horsepower isnt everything, I have 330 horsepower and my car weighs 3030 pounds. I have a 300+ pound advantage on LS1's. Doesnt mean I will beat them tho

 

My buddy has a 98 LS1 with SLP cat back, wisper lid, and pypertech programing. We race quite often just for the fun of it. This is how it always goes.
I take about a half car then he is even then his car shifts into second and Oh MY G0D does he go flying by(like I am parked) he is now about 4 cars in front of me. He stays that way till the end of the 1/4. I will have to video tape it sometime. He really does go sreaming by.
If you want to beat him there is an easy thing to do, take the air out of his tires!
Brian

 

the LS1 top end is incredible, they just never stop pulling all the way to redline. L98 has incredible low end torque, but after that its all over. I wouldnt suggest you ever race an ls1 from a roll or anywhere over 50 mph, you will get creamed bad, real bad!

 

When my buddy and I race from a 60mph roll, he doesnt pull on me at all. I dont know if my car is a freak or what, but he wont really pull on me til about 130, and I dont really want to push it past that. But ya, everytime I drive that car I am, "Damn, I love top end power" and there low end is really impressive too. LS1 is an awesome engine.
Brian

 

I agree and have to say, the LS1 would win, you'll take him till about 50 but after he will just pull away, love too see it though

 

Sorry to break this to you but the ole L98 just aint gonna keep up. Like other's have said from the start you will get a jump on him but after that it will be all over. With your mods you might pull a 2 car length but it wont be for long. goodluck.

 

89blackgta, what mods do you have? If you can kep with an ls1 up to 130 that is very respectable and you deserve a lot of credit for that

 

The only mods that I know of are in the sig. the guy who owned the car before me owned a Speed and Marine shop. So I have no idea what he might have done to it. My buddy with the 98 Z28 was very disappointed that he didnt take off from me. He thinks it is because at 60mph his auto only down shifts one gear. He thinks if we go from a 50 roll his auto will down shift to second and he will rape me. I agree.

Brian

 

keeping with an ls1 on the top end is not an easy task because i know from first hand experience those things pull like a raped ape up top youve got a hell of a car there to be able to do that, good job

 

i just saw your car traps at 97, when most ls1's will trap over 105 easy oh well, nice car anyways

 

I am not sure what your are saying. I never said that I can take him in the 1/4, his car walks mine in the 1/4.

Brian

 

higher trap speeds dont always guarantee a win in the 1/4, i was just saying that the person with a higher trap speed usually has more hp and would win from a roll, i didnt say you were lying, usually the car with the most power will just pull away more and more the faster you go, and ls1 are awesome up top, thats all i was saying, if your gta can stay with an ls1 from a 60 roll to 130 thats awesome and a very good acomplishment

 

Thats what I thought I just needed to check. But back to the shifting, I think that if he were to manually thow it down he would have walked away easy. He is kind of a puss with his car, he just doesnt want to hurt it in any way. And he knows that he can beat me at any speed so I dont blame him for taking it easy.

Back to the original post. Are you actually going to race a LS1 or are you just wanting to know?

Brian

 

With the mods the GTA has i should be a high 13 car with a good driver, and the Ls1 should be a mid 13 car stock with aut, the newer ones -01 and up are a little bit quicker i think.
So if the LS1 guy drives bad and the L98 good........ but then again if the L98 drives bad and a LB9 good..............

 

The only problem with the LS1s is that some of them are freaks of nature and run high 12s stock. Either way it will be fun just to race, but unless the LS1 roasts the tires through second he will win.

Brian

 

If you're straight about your times, I'm convinced you're car is a freak. I've seen numerous L98 Vettes with lots more done than you that couldn't claim your times. Heck, I've seen a ProCharged 90 Vette that only hit 106MPH. You claim 104 traps with 50RWHP less than an LS1 that usually posts identical traps. What gives? You can't weigh THAT much less...

 

Race him to the 60' mark. That should make you look good. An L98 is strong, but an LS1 is a bit much for one. Of course anything can happen, but the probability is that the LS1 will take your GTA. That being said, a GTA with your mods wouldn't be any slouch.

 

Is your friend with the LS1 really smart about cars, cause if u wanna win, like smallwood said, just make it a short run, like go to 50mph and then shut off After that though, goodbye!

Why is it though that L98 are automatically assumed to win in the low-end vs and LS1, dont they have about the same torque, yet the LS1 has 100 more HP.

Either way, if u wanna BEAT that LS1, get a Intercooled Procharger, hehe.

Can u tape the race!?!

 

Thank you. I am the only one(besides you) that has said the LS1s will be right there from the start.
Like I stated above, when I race my buddy I am only ahead(and not by alot, he spins more though) for a short while.

Brian

 

I have an LS1 and an L98 will not win up to 50 mph, an L98 might take me off the line because of its massive torque and the fact that i have a hard time catching traction, but I say once the ls1 gets traction its all over from there Also the LS1 does have the same amount of torque, but its at little higher rpm

 

im with you both, I mean my friends sister has a 98 Z28 and I drive it alot and it moves from the get go, with good traction the L98 won't stand a chance...even if the car spins the tires as soon as it hit 30-40 the LS1 is gonna lunge ahead and keep pulling. I mean other than that unless the L98 has AFR heads, gears, a built tranny, an aftermarket converter and slicks...then I think the L98 will prevail but until then, newer LS1's are going to be a problem...I mean with LT1's, honestly, they have not posted much of a problem for me. I can take alot of them, I have raced one LS1 and that was my friends Yellow Anniversary Edition running 13.1 ( headers, borla cat back, nitto 555r's, and programmer ) and he killed me!.....AARON

 

with those mods your friend should easily be in the 12's

 

Man LS1 are in a whole other level for me, im not even gonna worry about them now. LS1s to us thirdgens is like what Ferraris and Lamborghinis are to LS1, am i right? Well maybe not from a stand still, but from rolled, LS1 would get raped by either one. And im talking about the Diablo and the F-50.

 

hehe we all know...but this guy weighs about 300+lbs and he was spinning the Nittos, they are worn out bad, he got some MT Slicks and hoping to get into the 12's next run and he is going to throw in a vigilante stall..AARON

 

the diablo and the f50 both cost over $300,000 as well, it better be out of a camaro's league.

 

Well the LS1 can be ALOT more expensive than a thirdgen too. Whats the average price for thirden, like about $5000? The LS1 is easily over $10000 on average, right?

Thats at least double, but u right, the f-50 and diable, more than 3 fold the price of a brand new LS1.

Well, anyways, my point is take that $5000 price difference from thirdgen and LS1, and we will be right up there with mods.

 

I have yet to see an LS1 equiped car for less than $15k. So take the extra $10k and put it into a thirdgen and you will have a VERY fast and nice thirdgen. Take mine for an example. My car has 60k miles and the body and interior are perfect. If I were to put 10 grand into the paint and performance, HOLY CRAP would it kill LS1s. But at the same time, I sould be able to spend $550 on a nitrous kit and be able to take one. So either way.

Brian

 

I got my 98 TA for $12,900 with only 25k miles on it. It's mint. I haven't seen a deal like that since I bought it, though.

As for modding, the thing I like about modding the LS1 vs. the L98 is that their are guys running 10's N/A w/ cam and head swaps, stock bottom end motors. Some running low 11's N/A with cam and bolt ons=STOCK HEADS!!! They just have so much potential it's crazy. And they go fast and work well as daily drivers too.

To take an L98 into the 10's NA is tough, you'd prob have to rebuild the bottom end (engines are at least 11 yrs. old now), which starts digging into that 5k less price you were talking about, considering machining and a good rotating assembly will eat up about $2400 or more of it. And that stock TPI is NOT going to get you there. But, parts like headers and stuff (bolt-ons) for the LS1 are more expensive too, so it does take more money to mod them.

Both cars are haunted by the weak drivetrain though. 10 bolts suck. You're going to spend the same amount of money on either to get a solid driveshaft and rearend. The trannies need some work too, to handle 10's. And suspension parts for both cars are about the same price.

Both generations have their pros and cons. I love both my cars.

 

That i agree with. Well put

 

my car isnt a freak... my younger brother has a 91' Vette (last year for ybody L98) that he ran bone stock and it put up almost exactly the same times as i did when i was stock. he even has the sucky gears (2.59s vs my 3.07s)

the main reason why i can beat LS1s is in my launch. normally they get 2.0 to 2.2 60fts when im clocking high 1.8s. from a roll, however, i stand no chance

 

The launch, oh the damned launch. There is the reason I wouldn't consider a well tuned L98 an easy kill to about 45mph. First and second are useless past half throttle on the street in my '02.

 

LOL! That's so true. I'm leaning towards some Spohn LCA's and brackets for my next mods on the 98, traction SUCKS right now.

 

L98 vs. LS1? Hello! I don't really see why people are even considering this. It isn't even a race. An L98 corvette is a different story because they're light, and with the way they're set up, they respond very well to mods. I know . The L98 might keep up off the line, but its gonna get walked after that, unless its had some work done on the inside of the motor. I mean the LT1 vs. L98 is usually interesting and competitive, because those LT1's really aren't "all that". My friend has a '96 Z28 and I've ridden in it. I wasn't that impressed with it. It would be a good race between it and my GTA....

 

Ya LT1s are considered to be less lethal for us thirdgens, but an LS1 is a whole different story. But theres only technically 25 hp difference from stock LT1 to LS1, or is there maybemore, and its one of those GM underated, classified BS?

 

Yeah, the LS1 is definitely underrated. 305 HP is the rating (98+99) and some of those are putting that down at the wheels BONE stock w/ M6 trannies. I haven't heard of an LS1 put less than 285 HP to the wheels stock. I think the older LS1's are really around 330HP and the new ones about 345HP, give or take.

 

good ole chevy with the underrating......


saw a dyno in some car magazine...(forget which one it was a long time ago) of a LS1 z28. the z put down 300 rwhp...

 

Are the thirdgens, like the GTA or Iroc-Z underated as well? I mean the whole purpose of it is to make the Corvette look good, and they did have the L98 Corvette then, so did they use any schemes like that as well on our cars? Or is the HP figures pretty much what it is?

 

I doubt any 3rdgen cars are underrated, because most of the time, it seems like Chevy underrates a motor when it gets close to or over 1hp/ci. Like these:

- '69 csb 302 - rated 290hp, really over 360hp
- '70 csb 350 (LT1) - rated 360hp, really about 400hp
- '67 cbb 427 - rated 435hp, really about 460hp
- '63 csb 327 - rated 325hp, really about 370hp

Yea, these are about 20 years older than any 3rdgen motor, but the same seems to apply today. As soon as the power numbers begin to approach the 1hp per cubic inch, they start to downplay the numbers, probably for insurance reasons. But since the highest HP number in the 3rdgen era was only 245hp in a 350ci motor, i doubt they were underated.

 

Probably the only 3rd gen that was underrated was the TTA. Rated at 250hp but actually making around 300hp.

The red SS that went 12.96 GMHTP tested a couple of years ago put down 321hp to the wheels! Thats the most I've ever heard of a bone stock LS1 car making.

 

Those damn insurance companies, they **** up everything. Well it can also work to your advantage then. U line up next to someone who has a car making 250HP, and u have your TTA, which in his mind should have 250HP. But like u said, its underated, making maybe 300HP, and just like that he gets smoked, and suprised.

 

the last ls1's in the SS cars were rated at 330hp or so, and 360 ft/lbs.......many of them dyno at 350 at the rear wheel and around 380 ft/lbs

 

350 at the wheel, mother of ***, thats alot of HP, and a huge underated BS. What is that then about 380HP at the crank!?! Man those last LS1s are monsters.

 

didn't chevy (and most any car manufac at the time) rate there cars with gross hp
another words no accesories, dyno headers, no mufflers, a dyno intake, where the new rating now net puts the whole motor together as it would be in the car?