LS1ZGUY

I have an 02' Z-28 and today was the first day i took it to the track.....i ran 14 flats all day....WTF i thought i was suppost to do 13's or somthing....i only have a cutout done and i have 2.73's....is it my gears???

LS1Maniac

What were your 60 foots? What MPH were you running? We need more info on your car as well. I'm assuming it's an Auto.

RUNNING9S

CAP THE CUTOUT IT FOR SOUND AND DYNO QUEENS!CHANGE PLUGS TR55-OR TR6.RETRY THAT JUST FOR STARTERS.OUR STOCK 99 WITH 92,000 WENT
13.20'S-13.50'S THEN WE DID ALL THE BOLTONS @FM2W-RACING SHOP

LS1ZGUY

yes it's an auto and my 60 foots were 2.4's and a 2.5 i can't remember but all the runs my mph were 102....

NOZR1

iTrader: (5)

You need to work on that 60'. That is your problem. Your mph is good.

Marc00SS

Drag radials, torque converter, 3.73's

GT Griller

iTrader: (8)

I don't know where u race but elvation can play a big role on what u run. But it seems that the problem is mostly ur 60' times.

2MuchRiceMakesMeSick

Wrong, a cutout will run ALOT better then the stock exaust and Y pipe.

ALSO THE CAPS LOCKS IS RIGHT ABOVE THE SHIFT KEY ON THE LEFT OF THE KEYBOARD....PRESS IT ONE TIME

I SPEED

I had 3.23 to begin with, but I did the following to go from 13.8 to 13.2.
Air box, ported MAF, free ram air mod, throttle body bypass mod & cat back.
If you decide to change out your gears go with 3.73. It will make a big difference.

slik98z

Your 14's i would think are almost a direct result from 2.4 60 foot times. If you have an auto you hsould be able to get those down to around if not lower than 2.0. I have a m6 so im not sure how low you can cut a 60 foot time with the stock converter but im pretty sure you could eventually cut something like a 1.8, as long as you can get traction.

what are your other mods...more info on the car.

also where are you located?

BLK02Z06

iTrader: (1)

I agree. You should be able to get a 2.0 - 2.1 60 ft w/ stock converter and 2.73's. My car stock w/ lid and single chamber flow went a 13.49 with a 2.29 60 ft. @ 105. The next week at another track I was cutting 2.02 and 2.03 60fts.

RUNNING9S

we have built several cars with 2.73-3.23-3.42 gears and the more power you make the less gear you need! ours went 13.70-13.80's with gforce 3200 and 3.73's now it runs 12.80's with 3.42's fm2w arms et'st 26x11.50 105-107mph 92,000miles.heads off the wall next almost done porting.308 so far @ .600

BADSZ28

iTrader: (39)

Well, the shorter the gear, the tighter the TC runs too with a stall. When you have a stall, a gear change does little.