98z28jorge

iTrader: (4)

hey you guys Ive had the z for about 2 months now the car has 107k miles Ive done the following mods lt's lid k&n and true duals and last night i took the car to the track 1/8th and i ran a 9.0 i was expecting a 8.5ish can the 273s be the problem????? thanks in advance

98z28jorge

iTrader: (4)

the car is a 98 z28 with 107k miles with lts true duals lid and a k&n took it to the 1/8th mile the car was running a little over 210 degrees and i was thinking i was going to run mid 8s but ended up with 9.0 and that was the best run the hole night the car is an a4 with 273s can the gears be the problem or is there something eles i should be looking at???????? thanks in advance

Z28/2002

iTrader: (27)

what was the 60ft time?

99_ls1_z28

iTrader: (8)

what 60ft? DA?

Mean87SS

iTrader: (21)

The gears are a major issue.

98z28jorge

iTrader: (4)

the two runs that i did 9.0 were

rt 0.791
60ft 2.158
mph 79.9
et 9.045
and
rt 1.018
60ft 2.189
mph 80.5
et 9.060

the rest were slower like 9.1-9.3

98z28jorge

iTrader: (4)

the two best runs
rt 1.018
60ft 2.189
mph 80.5
et 9.060
and
rt 0.791
60ft 2.158
mph 79.9
et 9.045

LT1 > LS1

a 9.0 1/8th time is equiveleant to a 13.5-13.6 in the 1/4.


thats right about where a high milage 2.73 camaro would run with those 60'

dont be dissapointed, those times are okay

6SSPEED

If you are dissapointed with your 2.73's then put a 10 inch stall in your car. Traction will be your new problem.

C5Owner1

Your 60 ft. time leaves alot to be desired. A stall, gears and sticky tires would do wonders for your car.

dannyz

Yeah, your times are about right.
My car [ 2.73's] totally stock ran the 1/4 in like 13.7 to 13.8.
A stall / dr's will make a HUGE difference.

BKDZ28

iTrader: (10)

Clean your mass air sensor. My car was running fine no check engine light just a slight hesitation around 2200 rpms I was 80hp down on the dyno!

Kingc8r

iTrader: (21)

There is at least .2-.4 in your 60ft alone....how are you launching the car? Brake stalling it or flashing it? If brake stalling it, to what rpm?

Villain281H

iTrader: (5)

In the future, please post one thread on this, not one in each drag racing forum.

Now, on your times. I'd say you're a bit slow. The summertime air doesn't help, and even on street tires, the 60 foot might leave a tenth or slightly more on the table. But without a gear swap and or higher stall converter, you won't get much better than mid to low 1.9X 60 foot times (I'm cutting that on a mostly stock '00 Formula with 3.23 gears, a stock converter and M/T tires in cold air).

Have you checked the normal wear stuff (spark plugs, wires, fuel filter, etc), and more importantly, has the car been tuned? If not, I'd check those first, although if you are thinking about a gear swap, do that first so the tune can incorporate the # change to get your speedo reading correctly.

Derek

mrbigjeep

it depends on the car...

when i ran a 9.0 it was a 14.0.

a buddy of mine with a 01 cobra ran a 9.0 and it still was just a 13.7 or 13.8

98z28jorge

iTrader: (4)

the car has a fresh tune up but not tuned and i tried stalling it to like 1900 rpm and also just slamming on it i also ran it on drive and then shifting it myself and no better results thanks for the info i want to put 373s on the car and see what happens by the way the car has no problem hooking to the track at all but was wondering if the gears would actually make my car be at least in the 8s??? sure hope so!!!!!!

01SSRMS

iTrader: (7)

gears will get you in the 8's, add a stall after that.

yarrie

Thats true, If two cars run 9.0 1/8 but one run 13.54 and the other run 14.07 then it's a # of things that can play a part in that. HP, weight of car, different tracks, weather, etc. all play a major role in your top end charge.

98z28jorge

iTrader: (4)

my question is around were in the 8s will i be after going from the 273s to the 373s???? i dont really want a stall because i was told its a pain as a daily driver and a gas killer thats why i want the gears and when the money is right a good tune!!!!!

yarrie

my car went 8.32 on a cold cold night with same mods + ls6 intake and 241 heads with 273 gears. and Nov.14 2007 at Memphis went 8.41 1/8 and 12.89 1/4 but ran high 8.40's to low 8.50's even seen some 8.60's when warm. I put in some 3.73's on a cool night and went 7.98@88.14 making 322 rwhp. I hope this info helps.