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 3:15? 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. I know this information, because I called the dealer on it. Thanks for the help. Also, what do you guys think about the race?

The Z28's mods are LT headers, matching Y-pipe, LT4 KM and a Moroso CAI.

 

Thats kool how you guys found a drag strip or closed track at this time of year...I know thats were the race took place because talking about STREET racing is a big NO NO on this site.

Id say more than likely he has the 2.73's....

Just because they made a lot more 2.73 C5's than 3.15's....

Im sure some one will post the code for the 2.73 and 3.15 gears shortly...

The average ET and mph for the 2.73 A4 C5 is 13.5 at 103 mph...

A 3.42 mn6 LT1 with long tubes and cold air intake should run around the same times.....

Since they tend to run high 13's / low 14's bone stock.....

Keep having fun on those closed courses

 

Why don't you show this post to his Dad and ask him?

 

Yeh a stock a4 isnt gonna be a monster. With your mods I would imagine you could go a 13.3-13.5 so it makes sense

 

Actually, there is a closed road not too far away where we raced. They are taking down this building and starting to rebuild again. Anyway, on this long stretch there are no cars at all. It's pretty cool. Anyway, my car ran an 8.6 in the 1/8 with a bad 60'. It was a 2.xxx. If I got a 1.8 60' (which should be logical) I think I could run an 8.4 in the 1/8. I think that would be in the area of a 13.1 or so...Just a guess. I'm all about vettes though. It's a nice ride. I was impressed I did so well, especially up top.

 

... and a bad one. I don't think a 94 Camaro with just exhaust and air intake is going to run 13.1. I think the RPO code (in the glove box) for the 3.15 axle is G92. That's what the C4s were.

 

I dont think your car running a 8.4-8.5 1/8 mile would put it at 13.1 in the 1/4...If anything, I would imagine your car would come out quicker in the 1/8th, then die down top end....Thats why a 13.3-13.5 seems more reasonable.

 

Oh...OK then that dose make sense...

My 2.73 a4 dose 8.5 in the 1/8 and then 13.0 in the 1/4....

DOSE THE LT1 REALLY DIE THAT HARD UP TOP???

 

Yeah, I don't know what they are talking about. My car ran an 8.6 @ 83MPH. That should be good for 103 MPH. I've been browsing this forum and have notice some stock C5's running 13.1's @103. If they can do it, why can't I? If I ran an 8.4 @ 83Mph, I think I may be able to pull off a 13.2. Generally, you take your 1/8 mile E/t and times it by 1.55. An 8.5 x 1.55 = 13.175. The person who just posted above me said he ran a 13.0 with an 8.5 1/8 mile time. Why is this so hard to believe? Please elaborate???

Also, I just raced a vette 0-120 and he didn't pull up top. Which means my MPH should be around 103 or so...The vette should have pulled up top, if in fact it was faster top end. Were talking about going 103 and I was in front to 120. I'm confused why my idea of running a 13.1 is so farfetched? Just because you don't have an LT1, doesn't mean it's unrealistic for one to run a low 13 with basic bolt ons. lol, do you think I'll run 83 MPH in the 1/8 and then run 99 in the quarter? I guess that would be a little hard, since the car ran 99 MPH in the quarter stock...By the way, I have a stock 3:23 gear on the car. I called the dealer.

Exact mods = LT headers, Matching Y-pipe, Moroso CAI, aftermarket intake elbow, high volume oil pump, descreened MAF, (that does nothing) LT4 KM and 160' thermostat. I just mentioned the mods before that "actually" do something. The other mods I listed, don't add any HP gains at all...The car also just had a new crank put in. The timing chain broke and to make a long story short, I ended up needing a new crank. Three valves and a pushrod ended up getting bent.

 

Don't be jealous. Also, don't be a "I have a corvette, no camaro with bolt ons can beat my car" guy. I'm shocked C5 vettes run mid 13's and a 94 camaro with a couple bolt ons can beat it too. How is that possible? The camaro still has like 50 less HP, but pulls a better, if not the same quarter mile time. All I can say is that **** happens...Kind of weird though, the vette is also lighter...

 

No, people are just shocked a bolt on LT1 can hold it's own. Think about it, I just raced a vette to 120 and they are saying my quarter mile MPH is going to kill me, hence making my car unable to run a 13.1. Therefore, the vette I raced must trap 100 in the quarter or maybe slower...

 

My ex-LT1 95 Camaro with 130k miles and Mac shorty/mid headers, MAF, CAI, no cats, with a Hooker catback and a mail order tune ran 13.15 @105. This was with 3.23 gears. It IS possible, plus he has LT's...

A stock LS1 vette A4 with 2.73 gears is somewhat of a a dog. The gears "really" kill it. It's a low 13's car though. My friend's dads 97 A4 car ran a 13.2 stock.

steve

 

Exactly my point, thank you. I also have no cats by the way. I'm thinking about getting a tune, but I don't know if it will be worth it. What do you think? Did the mailorder tune help you out, or was it not necessary? I'm thinking about getting my car dyno tuned at this local shop, but it's $500. What do you think I should do?

By the way, thanks a lot for seeing my point. I'm glad someone else stood up for me and has had experience with these cars.

 

I had a 95 B4C A4 Camaro with boltons that would run with 6 sp vettes, probably due to poor driving, but none the less, I ran with them. I know, never raced, but that car would out run my friends 99A4 vette with 3:15 rear, it is a dog!!
And to your original question poster, "How to tell what gear the vette has", on the glove box is the options and if it has 3:15 performance axle, it will have G92 code!!
Don't be so skeptic about Lt1's, they are great performing cars, and with his mods...easily done!!

 

Thanks for the positive post and being understanding. So, what will the code say if it doesn't have G92? Lol, well I guess that doesn't matter. If it doesn't say G92, it's a 2:73.

 

Don't know that it is necessarily worth it for a full dyno tune with your mods, BUT you can get a tune from PCMforless for less than $200. A buddy of mine also ran one of their mail order tunes in his 94 Z M6 with LT's, dumps and Lt4 hot cam. Made right at 330 rwhp a couple years ago. If you were running a "big" cam, or converter or something, I would say yes to dyno tune. My C5 had a night and day difference with my dynotune. Definitely worth it in my case..

Thinking about sending my dad's mostly stock 94 Z's PCM in and seeing what gains it can get. Well.... mainly it's got a couple issues I think. LT1's can be strong cars for what they got. My 95 Z would take out my 92 LT1 C4 mainly due to the gearing. The vette was 2.59 gearing and the camaro had 3.23's... I had both cars at the same time and we took em to the track to run heads up. The camaro pulled out on top each time....hehe..

Like I said again... a "stock" 2.73 geared A4 C5 is a kinda a dog..

 

Yea the 2.73 geared C5 is pretty slow...

103 mph for a C5 is almost laughable...

The quickest 2.73 that I know of ran a 13.1 at 107 mph...

90% of them are 13.4-13.6 at 102-104 mph....

Slow for a Vette but still not really what most consider slow.

I think a 2.73 geared C5 would only be 5 tenths quicker than a 3.23 geared LT1 camaro....

A couple of mods will make that up real quick...

No big deal for the maro to gain 5 tenths...

 

You just have to take the gearing into consideration...

One poster said that his Lt1 camaro would beat his LT1 C4 down the 1/4 mile....

The C4 had 2.59 gears...

The camaro had 3.23 gears..

Thats a .64 differance and made the camaro gearing much more agressive....

It would be like comparing the camaro and it's 3.23 gears to a C4 with 3.87 gearing.....

 

Good point. I think I may just go and get it dynoed. Once I do that, I'll find out where I'm at. I like the pcmforless idea, but it stinks I won't have a car until I get it back...I'll figure something out. I think the dyno should tell me if my car is running too rich or not.

 

You can pay extra for a core PCM. Then you send yours in when you get the new one. No downtime and they give you the core charge back. I'd dyno it first, then see whats going on then..