pvt num 11

I can see an L98 hitting 150... 2.73's and a stick would make it pretty simple, yes?

z28monster

iTrader: (1)

i dont see why peeps cant amagine an LB9 305 hitting 150 ish ... it would only take a bit longer due to the lack of horse power....
i have faith in my car

Orr89RocZ

iTrader: (20)

LOL i didnt hate it when i got it as it was fastest thing i ever driven....

But, I just got used to being a 14.02 second car and its time for something a bit quicker. low 13's would be nice step up as like most LS1's...

L98 sucks in that its TPI which is a poor intake design for higher rpms where i want to run LOL. Flowmaster likes higher rpms!! LOL Great for torque and all but no top end, so from a roll, there is little feeling in pulling force. Maybe i will get some of that back once the gears go in but untill then, i am getting bored with low 14's. LOL I am a speed junkie i guess. Want more power than everyone else just to say i have more than you. LOL that sounds a bit immature and all, but thats the way i am and i know most people would love to have lots of power.

nick418

LOL i see what your sayin man, you deff should get better gears, heads hell maybe a Supercharger or better twin turbo Unless you wanted to spen that money on C6 rims

mjustdie

my main question is to those complaining about actually doing triple digits in camaros. why would you buy a camaro if you didn't want to go fast. if you think an lb9 isn't capable of doing 150, then you're an idiot and don't follow closley to thirdgens like you say. you don't need a l98 to be all bad ***. I've seen plenty of lb9's whoop some l98 ***, its your setup, not just your engine. if anyone thinks the engine is everything in a car then you can go back to watching tunervision and let the motorheads play. i'm not interested in building my z to run 1/4 times, im interested in high speed and maintaining it. sure not to many places to fly like i want but that's my goal. besides, the l98 isn't all that special, it didn't perform all that much better than the lb9's.

nick418

ah the Lb9 auto was atleast almost a second slower then a L98, a L98 auto will still beat a Lb9 5 speed

ljnowell

#1, name calling is against the rules, on any board on TGO. So you like top end, thats nice. But you arent going to be getting 147 in a mile. That is what was said, read the whole thread before you bestow your high and mighty opinion on it.

mjustdie

ljnowell: yeah, you're right, saying certain people are idiots was a lil overboard and i apologize to all of those particular people. but it's not necessary for individuals to try to overstate facts they have no knowledge of. you could have had sex with a famous supermodel and 100 people saw you but none of us have, now would that be right of us to call you a liar or say you don't have the looks or wealth to bang a supermodel?? i think not. i'v been reading and posting, i also don't consider myself high and mighty.

nick418: are you seriously going to tell me that a stock L98 with the 700r4 packing 3.27's is going to beat a stock lb9 with t-5 packing 3.73's? even if you go with both running the same setup, a second in a quarter isn't all that much to me, unless you're running 10's and under. also depending what year of either engine makes a difference.

1/4 mile @ 90+ mph in a stock thirdgen (depending on your setup) you guys already know is possible, but you don't believe any higher number on a longer stretch???? now that is confusing.

Orr89RocZ

iTrader: (20)

1/4 mile times of 90+ is about common for 305 TPI 5 speeds and L98 cars. Mine runs 14.0 at 96 with converter. stock it was still 14's at 90+ for sure. Nick's is 14.3 at 97 pretty much bone stock. LOL

Top speed factors in gearing and aerodynamics. 3.73 gears are going to top out much slower than 2.73's. And technically, a 84 camaro with same motor and gears as 92, will top out a bit faster than the 92 cuz its more aerodynamic.

LMAO Sorry Nick, but I did brooke burke last night!! You all bow down right now!! :hail:

mjustdie

Orr89RocZ: nice to see some more people with common sense in here. aerodynamics also plays a great role in top speed, without a doubt. I am tryin to say that there are many factors in producing high top speeds and fast 1/4 miles. they are 2 totally different setups. 2 cars, let's say 2 88 IROC's, same engine, same trans, same tires, etc., but 1 running 2.77's and another running 3.27's will have big differences. the 2.77 geared car will have a worse 1/4 but a better top end. but to say that a lb9 for that same year vs. the l98 would lose if the l98 had the 2.73's and lb9 had the 3.45's is out there man. 10 hp and 40 ft./lbs difference!! that's a good run right there. but an 86 lb9 vs. l98 there i know the l98 would win. 30hp and 35 ft./lbs. difference, especially with the gear ratios available in that year.

Orr89RocZ

iTrader: (20)

i do remember hearing that L98 1LE car ran just a bit faster like a tenth in the 1/4 than the 305 1LE car of same year. So yeah, it would be real close comparison of top speed. I would like to see the outcome of that.

I get what your saying. i would think that a LB9 305 with stick and 3.45's would hang with an L98 with 2.77's for sure, but L98 should come out on top with its hp and torque advantage A 3.27 L98 should out run the 305 anyday. Just the advantage of 10-15 hp and 20-30 lb ft torque. . But not by much tho, it would be a good one.

i also think that a 3.45 gear LB9 with T5 will top out slower than 2.77 car. I am not sure how accurate this is but check this out

with .7 overdrive 700r4 and 2.77 gears, and 25.7 diameter tire, it says top out at 177 at 4500rpms.

with .63 overdrive on T5 (i think) and 3.45 gears, same tire, it tops out at 158mph at 4500rpms

http://www.speedworldmotorplex.com/calc.htm

nick418

nick418: are you seriously going to tell me that a stock L98 with the 700r4 packing 3.27's is going to beat a stock lb9 with t-5 packing 3.73's? even if you go with both running the same setup, a second in a quarter isn't all that much to me, unless you're running 10's and under. also depending what year of either engine makes a difference.


Yeah well a L98 AUTO should have the same top speed of a Lb9 5 speed. But the L98 will still beat it through a 1/4 and 1/8. If i rem correctly a 1990 Iroc L98 top speed was a 147 or 148 mph and a 1991 Lb9 5 speed was like 143 mph... Also you say a second doesnt make a diffrence in a 1/4 ?!!?! Ok my car ran a bonestock 14.3 and i seen a Ls1 run 13.2 bonestock, so thats like a second diffrence right there... So your tellin me the L98 is pretty much as fast as the LS1 That 13.3 Ls1 would rape me!


HAHAAHA ORR! YOU BASTARD! YOU TOOK MY GIRLFRIEND!

anymethod

Which engines and years had speed governers? I'm sure that would be an issue in top speed. My car with me shifting manually will hit 3rd gear at 80 mph. I shift it out of first at 50 mph (5250rpms). I have 2.73s, eventhough when I do the 70 mph drop test (where you drop the car into D at 70 mph and the tach rpms should read your rear gear ratio) my rpms are 2450. That is just my car because of the cam probably. My car is amazing at highway speeds for an LG4 because of the cam, but I'm in first gear for like 5 or 6 seconds because the 2.73s keep me out of the high cam range. If the internals could take it I would rev the engine to 6,000rpms and go faster. But anyway, I don't see how its hard to believe that a car that can go 96mph in 1/4 mile can't do close to 150mph in 3/4mile or a mile. 1/2 mile might be a stretch, especially if its TPI.

~Matt

Mcdamit

89' Iroc TPI305 G92 Pure stock. 16" stocker rims. How fast? Has everything except, Aluminum drive, 1Le brakes and has an a/c, radio.

How fast can a carbon fibershaft hold?

Orr89RocZ

iTrader: (20)

mine traps 96 now and i was going 130 mph within a 1/2mile or so from a 60mph roll. In overdrive cruising i was doing something like 3500rpms or so and had another 1000 to go atleast and could have hit 145 or so which is pegged on my speedo.

prOject-IrOc

i've had my speedo buried a few times. i'm guessing 150-155mph...

that was when it was stock. 1990 L98