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99 Corvette Vs 94 Z28

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Old 12-19-2005, 02:19 AM
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Default 99 Corvette Vs 94 Z28

Last night I got into a race with a stock A4 99 corvette. It's not a convertable, but it has a removable top. Anyway, we went from 0-120 and I won by a car and a half. I was shocked and I thought the vette would pull me up top. Because we all know LS1's own top end. Anyway, the driver was a friend of mine. His dad just got this car and it's really nice. I pulled the vette off the line and it kind of stayed that way all the way to 120. So, top end it's pretty even. He didn't pull me up top and I didn't keep pulling him.

My friend and I were curious. How can we tell what gear that vette has in it. It has 1-2-3-D. Does that mean it has a 3:23? I know in the Z28's if your car has 1, that means you have a 3:23. If not, you have a 2:73. If anyone knows, i'm curious. Thanks.
Old 12-19-2005, 02:50 AM
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What mods do you have!?!? I know I lost to a C5 in my 5.0 by 1 car from 55 to 80-85ish and my 5.0 would have torn the living mess out of my 95 Trans Am.

Anyways, good kill.
Old 12-19-2005, 03:11 AM
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All I have done is LT headers, matching Y-pipe, Moroso CAI and an LT4 KM. Basically, all the bolt ons that actually due something. My car ran an 8.6 in the 1/8 with a 2.xxx 60'. I think it's capable of getting an 8.4. At least I hope.

5.0's take a lot of work to become fast from a roll. I mean, they only have like 215 crank hp stock, don't they? I would think they get their fast quarter mile times from the 60'. A light car with some nice torque.
Old 12-19-2005, 03:15 AM
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Yes, the 60' is where the 5.0 shines. Mine is setup for more roll though than the average 5.0. From a roll I was dead even with a 04 GTO that had a timeslip for 12.8@109. We went from 65 to 95 mph. He claimes he missed a shift (i think he did) and would have pulled by 1 car. Still, I would annhialate a stock 04 GTO. (BTW, he was 6M) Anyways, that sounds about right then. yer LT1 is makeing a LOT MORE POWER than mine was I suppose. What is LT4KM ?? Knock module?? those are worth what, 5-10rwhp depending i think, LTs are what, 20-25 after a tune. Y-pipe is a good 10-15 i guess and the Moroso CAI sucks up lots of silica and clogs the maf and MIGHT give your 5-10 rwhp i think. (I have some links on why im personally boycotting K&N if anyone wants them.)
Old 12-19-2005, 11:39 AM
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Yeah, give me some of those links. I haven't had any problem with my moroso. Although, I have heard a lot of people say there K&N has sucked up water. In that case, I would think it would happen to me. The filter for the moroso is pretty much the same. (a little smaller though) Knock Module's aren't really worth any hp, they just give you the hp your supposed to get if you have LT's. LT1 knock sensors are very sensitive and if you do any modification to you exhaust (such as LT's) it can throw off timing. An LT4 KM basically keeps you in line. I personally believe the Y-pipe and LT's together gave me about 15-20 Rwhp, but I have no idea. I'm thinking that is the average and I have yet to take my car to the dyno, only the track. (once and it was the 1/8) I say with all my mods I have gained about 25Rwhp. Which isn't much, but that would seem about right, if not a little too much.
Old 12-19-2005, 12:06 PM
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must be a 6- speed? here are your links.
http://forums.swedespeed.com/zerothr...&postid=195593

http://forums1.roadfly.com/porsche/f...4959457&page=1
Old 12-19-2005, 12:17 PM
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No, it's an A4. Why would you think it was a 6-speed? My car has the stock 3:23 gear also.
Old 12-19-2005, 12:22 PM
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They are just talking about a porshe, right? A 944? I briefly went over the article. I'll read more of it later. Although, I didn't see anything that mentioned Z28's.
Old 12-19-2005, 12:54 PM
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its the filter, not the car, that is in quesion imho. try the grease dab experiment.
Old 12-19-2005, 12:56 PM
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3.23 helps a lot but a lt1 plus 25 rwp is still 275-280 ish and the c5 was around 290-300 w/better aerodynamics and 300# less. awesome kill, i think you have a GM freak.
Old 12-19-2005, 01:06 PM
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With my mods I ran dead even with my buddies c5 with only a corsa catback, and this was from a 40 roll to around 90 mph, and hes an a4 and im an m6...not saying the race didnt happen but either that vette is a dog or you have a very healthy lt1, either way good kill on the vette.
Old 12-19-2005, 05:51 PM
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Well, it's obvious that it happened. If I'm running an 8.6 with a 2.xxx 60', that means the car is good for a couple more tenth. This means the car can "most likely" run a 13.3 or so. That's pretty much all a C5 A4 vette is good for. Which is why it stayed pretty much even up top. In the quarter, I bet out MPH would be about the same. I would say about 103 or so. Personally, I don't think this race was a surprise at all. I'm just shocked it didn't catch me by 120. I looked up stock C5 times and the average A4 is a 13.5. If this is true, our race makes perfect sense why I won by a little over a car. I know I don't have a factory freak LT1. Although, I did just get the motor basically rebuilt, because my timing chain broke. So, the car is running pretty good. I had to get a new crank as well... (that means a lot of money)
Old 12-19-2005, 06:37 PM
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Yeah, yers is a freak. A c5 A4 took me by 1 car 55 to 80-85ish. I previously hung with a GTO (04 M6) that had a 12.8@109 timeslip from 65 to 95 we were dead even (he missed a shift and claims a 1 car victory if he hadnt...i didnt/dont dispute that). The point is, my 5.0 would KILL my old 95 A4 LT1. My LT1 would crawl past 350Z's decently, my 5.0 puts multiple cars on them from 70 to 90 last time i tried it. and that C5 still trumped me by 1 car. Also, a stock A4 LT1 does 14.0-14.3 and with 20-25 more rwhp, you can see where you would end up...

All i'm saying is, you must have a freak or the C5 sucked.
Old 12-19-2005, 07:16 PM
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Im not trying to sound rude but Stranger88 you mention those races with the A4 C5 and 12.8 second GTO in quite a few posts. Sounds like you are confirming how fast your 5.0 is compared to those cars. But, what if the C5 wasnt running right or like you said, the GTO missed a shift. Wouldnt that make your car much slower? You also said that your 5.0 would kill your LT1 but how many car lengths is a kill...2 or 3? I apologize for the rant. Its just friendly.
Old 12-19-2005, 08:23 PM
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Well, you are correct, since I have not taken the 5.0 to the track yet (it closed) I do use other cars as a measure of speed. And yes, the GTO missed a shift. He also had a timeslip where he had missed the same gear and it was for 13.2 but until now i have not been **** enough to quote that, lmao. Anyways, Based on how I did compared with a 350Z, C5, modded GTO, I have established that I PROBABLY run low 13's. And yes, my LT1 didnt hold a candle to the 5.0. Everyone, myself included, who has ridden in it agrees with that. Also, the Lt1 got run away from by an LS1 F-bod with only a tuner and mufflers. The C5 didnt run away from my 5.0 by a long shot.
Old 12-19-2005, 10:18 PM
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Your comparing all these cars by street races. That isn't a good way to look at it. If you can keep up with a GTO that runs a 12.8, you would kill a stock A4 C5 vette. To be honest with you, if you lost to a stock C5, your car most like runs high 13's. Take it to the track. A4 C5's do not run any faster than low 13's, which is why I had a good race with one. Also, it doesn't matter if your 5.0 "feels" faster. A stock 5.0 feels faster than a modded LT1. That's because the 5.0 is so light and has a lot of torque. It just feels faster, but in reality it's a lot slower. With my mods, I'm right where I should be and do not have a freak LT1. Low 13's is normal for an LT1 modded the way mine is. You can't compare your mustang race against a 350z, compares to your LT1 race against a 350z. Maybe your LT1 wasn't in good condition...You never know.
Old 12-19-2005, 10:28 PM
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Hrmmm, the Lt1 was in very good shape, i beat my friends 5.0 and he normally does better with the LT1's. Usually winning. Anywho, the C5 in question claimed 12.3@116 but he kept flip/flopping on what mods he had/didnt have. I just assumed he was full of crap and stock. perhapse he wasnt, I know for a fact he was at LEAST as strong as that GTO though and hte GTO had the timeslip on him and still running big/littles from teh track earlier that day. Maybe the C5 was modded, who knows, anyways, good kill.
Old 12-19-2005, 10:40 PM
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Look for the code G92 on the back of one of the rear compartment covers. If it has this it has the 3:15 gearing. If not, it has the 2:73 gears.
Old 12-19-2005, 10:44 PM
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hrmm, the C5 pulled me by 1 car at 85 mph. Lets do some math. The C5 has the same powertrain as an F-body LS1 minus about 200# of weight...hrmm, that sounds like low 13's to me, lets jsut say 13.3. Now, at 60mph 1 second is equal to 88 feet. So...since he had about 15 feet on me (length of his car about). And we were doing 85 and not 60 that is a FRACTION of a second, nowhere near the "half second" it would take to make me high 13's Anywho. Nice LT1. PS, i will post some track #'s when it opens next year,.
Old 12-20-2005, 02:40 AM
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To the origional poster...please do not put all automaic C5's into the same group.....

I am the one who told you to visit my list on corvette forum....

Currently with a short list of 10 2.73 geared C5's..13.1 is the quickest with the average at 13.5 and 103.8 mph....

It is a 2.73 C5 that I beleave you raced....

The 3.15 A4 C5's are quicker and on the short list of 12 3.15 a4 C5's we do have a bone stock 12.9 second automatic C5...

The average of the 12 3.15 C5's was 13.3...

13.3>13.5 for the 3.15 vrs 2.73 C5 comparison....

We have 15 mn6 C5's currently on the list with the fastest one being a 12.8 at 111 mph...

The average of the 15 mn6 C5's was 13.1...

13.1 mn6 3.42 C5 > than 13.3 a4 3.15 C5

13.3 a4 3.15 C5 > 13.5 a4 2.73 C5


So of all the C5's.....I beleave the one you hanged with was a 2.73 C5...

They can run low 13's...But more than likely your mildly modded LT1 and his stock 2.73 C5 are both right around 13.5 at 103 mph...


If he has the code G92....Then he has the 3.15 gearing and they usualy run 13.3 at 104-105 mph....

If he has this G92 code then your camaro may be quicker than many seam to think..



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