Why is my car a pig???

[2kz]

I have a 2000 Z, A4, 2.73, bone stock with 27,000 miles. The best time ever was a 13.98 at 101. It's usually 14.0X at 100. Traction is pretty bad with street tires but that shouldn't effect the mph, should it? It seems everyone with similiar cars are at least 2-4 mph more than mine. It runs fine except I do notice it pinging once in awhile although I always run 93, (yes I've changed the gas filter). Thanks for any help. Kind of disgusted.

[BigFrog]

How many passengers are you carrying and what are they eating?

[Firebirdjones]

So many variables you can't really compare to others on this board where some live in Jersey at sea level and others live 7,000 feet up in Colorado. Not to mention the weights of these cars.
Without more information it's hard to say how your car is running. But high 13's at 101 mph isn't that unusual really.

My 02 SS convertable ran 13.70's at 102 mph when it was stock,,,,most thought that was slow but most of them didn't weigh 3,860 lbs. either like mine does, not to mention the DA when I was running was around 35 or 3600 feet. Correct for sea level would pick that time up quite a bit.

With that said, don't worry too much about what others are running. Without all the info I listed above the timeslips are useless to compare to in my opinion. Just keep running yours at the same track with same conditions and keep track of your progress. Larry.

[2kz]

BigFrog, that's funny! No passengers and the heaviest driver was 180.

It's a T-Top car. The elevation here is 1300. I haven't seen any other stock LS1 cars at the track to compare with. It's run many times over many years and is consistently the same.

Still seem normal? Thanks again!

[00ssSLP]

Longtube headers a Stall converter and gears do wonders for these cars. I went from 13.7-13.8 102mph to 12.7 @ 107mph but I kept my 3.42's.

[Firebirdjones]

Seems ok to me. 1300 feet isn't bad but it isn't the best either. If you figure in the weather then your DA could possibly be much higher than that.

If you car has consistently been running that for years then I would not suspect anything wrong. Sounds consistent to me.

[TwistedSS]

My 99 Z28 had stock 2.73s and would do 13.93 with a 2.000 60' all day long. Changed to 3.42 gears with a freshened up diff and went 13.30's spinning in first.

[408WS6]

I think you should get some 3.73's. Those 2.73's are killing you. Then a stall and while your at it throw some MT's on. Then I would go w/ some bolt ons: headers, catback, lid. You'd be amazed what these ls1's will do w/ just bolt on parts. Some are in the 11's.

[2kz]

Thanks for the replys. I was planning on changing gears and the convertor until gas prices went crazy. It's my summer DD so it needs to get relatively good mileage.

Maybe all the other "stock" cars I've been reading about really aren't.

BTW, how much did better gears and convertor kill your mileage? Do headers hurt your ground clearance much? We have crater sized potholes here.

[408WS6]

To be honest, I really don't know how much gears and converter will hurt your mileage. Too many variables to be able to predict. But both will hurt without a doubt.

And that is one of the main drawbacks of headers is the ground clearance. If your car is not lowered, you might not have much problems as long as your careful. If your car is lowered, depending on how much, you will have all kinds of problems. Been there, done that. I raised mine back up to stock height for that very reason. And it depends also on what kind of header. I hear kooks has good ground clearance, but are pricey. Hope this helps.

[harnick3]

If you are running street tires air them up to about 45# and go around the water going up to the lights. You can do your tire warm up after you go around the water.

[98ls1blackbird]

Your times and speed sound just about right for a relatively stock car. That is right where my 98 ran in stock form.

[burnws6]

yea it doesnt seem that bad...i think thats what my t/a was doin when it was stock

[Too Fast]

Thanks for the replys. I was planning on changing gears and the convertor until gas prices went crazy. It's my summer DD so it needs to get relatively good mileage.

Maybe all the other "stock" cars I've been reading about really aren't.

BTW, how much did better gears and convertor kill your mileage? Do headers hurt your ground clearance much? We have crater sized potholes here.

My '98 w/AT, 2.73, stock would barely touch the 13s,@ 98-99x, just like your times. Then, I put a lid on it, voila, slow times were now 14.0. MPH was up a little over 1 also. Then, I shifted the transmission myself instead of letting it do its' thing, and with good traction I was now running 13.6x to 13.9x, with a best trap of 102.95. With 26-27 highway MPG. Then, I got what I really wanted, my 6 speed car. Much more fun, and faster, same gas MPG.

I put on ceramic coated Hooker LT with their ORY pipe and my ground clearance improved. Now with my lid, Hookers, muffler, earlier this year I did a 12.992 @ 107.5x with a 2.1 60'. With a 2.3 60', it did a 13.2 @ 108.95 same night. Also, gas mileage went up to 28.5 highway!

[00maroz28]

I have a 2000 Z, A4, 2.73, bone stock with 27,000 miles. The best time ever was a 13.98 at 101. It's usually 14.0X at 100. Traction is pretty bad with street tires but that shouldn't effect the mph, should it? It seems everyone with similiar cars are at least 2-4 mph more than mine. It runs fine except I do notice it pinging once in awhile although I always run 93, (yes I've changed the gas filter). Thanks for any help. Kind of disgusted.

i have the exact same car, same gears... stock i ran 13.66 at 104

you can still run good times with those gears... i pulled a 2.009 60 ft. and a 13.06 at 108.8 with exhaust, lts, slp flowpac, 85 mm maf, ngk plugs, msd wires.. on street tires (at sea level)

right lane #7069

[2kz]

00maroz28,

When you ran the 104 stock, was that at sea level also? Really effects them that much? I'm at like 1300 here.

[00maroz28]

00maroz28,

When you ran the 104 stock, was that at sea level also? Really effects them that much? I'm at like 1300 here.

yeah... all runs were at englishtown in new jersey... which is only like 5 miles in land from the coast...its sea level

[TrickStang37]

you need to see what other LS1's are running at your track to get a better estimate as to how your car is performing. ive been out on nights when LT1's were trapping 95-96 and LS1's 101-102 dont get discouraged either, you always see people best times but hardly ever their worst or average.My ex girlfirend had a white 96' T-Top 2.73 A4 LT1 that ran 14.5@96 at one track and 13.9@101 at another, both similar weather and elevation.........