z28 top speed

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Dec 27, 2003 | 02:10 AM

#31

ba96ta

Registered User

Joined: Jan 2003

Posts: 256

From: Fayetteville NC

Quote:

Originally posted by NoSlowCamaro
hey..robvas..and anyone else with the 2.73's...does the car have to shift to OverDrive to hit 150? or does it stay in 3rd gear the whole time? if it does..what are the revs at around 150? is that all she had in her? or do you think the 2.73's are capable of hittin the 163 limiter stock? Sorry for the questions....right now i just cant risk gettin caught..but yet i'm dying to find out what she can do stock...when the day finally comes, i'll be sure to post about it

I was with my brother when he took his 02 Z28 A4 2.73's up to 155. It was still in 3rd at about 5900 tpm. Thats with 265/40's on 17's.

Dec 27, 2003 | 01:00 PM

#32

dist0rtion_69

Registered User

Joined: Jan 2002

Posts: 348

From: Jonesboro, GA, USA

I don't know about you guys.. but during a race 150 seems almost instantaneous. I raced a car once and when I popped 5th and kept going when I looked up and I was doing just about 150, I let off. It only felt like I was doing maybe 120. I think my car could DEFINATELY do 160.. I wouldn't be surprised if it could hit 170-180 with a little modification to body gaps, etc.

Peace,

Dec 27, 2003 | 07:24 PM

#33

Dark Angel

Registered User

Joined: Oct 2001

Posts: 765

From: Henderson, NV

Hit 6200RPM limiter in 5th, no speed limiter, 3.42's, slight decline, german autobahn. You do the math.

Dec 28, 2003 | 01:24 PM

#34

jthomas

Registered User

Joined: Jun 2002

Posts: 133

From: Roanoke, VA

Quote:

Originally posted by RS Dragster
I wonder why the hell all of you guys don't have troubles getting to 160 in a stock LS1

I must be doing something wrong. My car will pull pretty good up to 130 but then slows down. By the time it hits 140, it's about 1mph/sec. Fastest I could get her is 145.

Now that's with a lid/filter, muffler, and free mods. I even hit 145 with the stock tires/rims. Even after my wide 11" rims I can still hit 145, but not much more.

What would prevent me from going faster? You'd think my ram air would help out a little bit at higher speeds

i dunno what is up with that. i had no problems at all running into the speed limiter (and hard) with just a gms and catback. of course, my car is lowered by about 1 1/4", which will reduce frontal area and help keep a fair amount of air from under the car, both which help the aeros out.

i had the top speed raised to 255 mph (as if!) and have run the car to about 300 rpms higher than with the limiter. so i am guestimating about 170 mph- and still pulling!