Stock 1/4 Mile Time for 98-02 Z28

[98RedZ28]

anybody know what the 1/4 mile time is for a stock z28. also how much horsepower do they have stock. one more question, I put on a magnaflow exhaust system, if estimated how much hp would this add?

[Mykdiver]

Well, they run from 12.8Xs to 13.6Xs depending on if it is an auto or manual, and how good of a driver you are.
Hp stock was rated at 305-325. It is more like 300 rwhp though.
The catback would add about 5-15 rwhp.

[TylerDurden28]

but if im not mistaken the 00-02 model LS1 engines have the LS6 intake manifold which adds 10-15 HP but my 99 has a few mods and it hauls A$$

[Mykdiver]

You are mistaken. The LS6 intake came on the 01-02s. And it does not add 10-15 hp. Maybe 5-10 but more than likely not that much, unless you have heads and cam.

[Anniversary "Z"]

Originally Posted by Mykdiver

Well, they run from 12.8Xs to 13.6Xs depending on if it is an auto or manual, and how good of a driver you are.
Hp stock was rated at 305-325. It is more like 300 rwhp though.
The catback would add about 5-15 rwhp.

In your opinion which is faster the auto or the manual? I'm an automatic which I know my chances of missing a shift are zero but at the same time I can't launch like a manual.

[mr._bowtie]

Throw in a stall converter and you will anilate most manuals off the line. Car for car if both drivers were good. They would be almost identical. I have raced both and beat both. Mines a a4. Its hard to shift faster then a auto with a shift kit or some tuning done. The manuals advantage is in being able to launch at a higher rpm and not having as much drivetrain loss but we are only talking about maybe 3% drivetrain loss. Not enough to really make a difference.

[mustang muncher]

The gearing in a manual tranny is better than that of an A4. The only gear the A4 tranny has the M6 beat on is 1st.

[TylerDurden28]

I have raced a few 4th gen f-body cars that are m6 and i have noticed when we take off from the line we are even and when my a4 shifts at 6200 rpms and he shifts next to me in the m6 he falls back and usually they never come back to beat me. I love my a4 i have had a stick before and it gets hard if you are trying to eat a double 6 doller burger from CJ's on the 101 south towards Los Angeles in stop and go traffic trying to shift. But whatever you choose from for tranny you are still driving a camaro or TA

[LS1PoweredZ]

Going back to the LS6 intake manifold in the 01-02 Z'z, they really dont have more HP cuz 98-00 Z's have a more aggressive cam. So they even each other out. I remember reading that somewhere.

[SOMSS]

Originally Posted by LS1PoweredZ

Going back to the LS6 intake manifold in the 01-02 Z'z, they really dont have more HP cuz 98-00 Z's have a more aggressive cam. So they even each other out. I remember reading that somewhere.

The 01-02's have more horsepower and torque under the curve than previous years due to the combination of the LS6 intake and a cam that is beefier in the bottom end and midrange.

[96z28m6]

with m6 drivers if they practice enough they can shift just as fast as an auto. Yea prolly not down to the millisecond but close enough to keep up.

[35thZ28]

My car is an M6 an it deffinetly has an edge on the A4. I do agree with Importkiller. Real hard to drive on the 101 sometimes, I won't let anyone eat in my ride. Well............ depends what she looks like.

[fbodywhore]

Originally Posted by ImportKiller2

but if im not mistaken the 00-02 model LS1 engines have the LS6 intake manifold which adds 10-15 HP but my 99 has a few mods and it hauls A$$

wouldnt say you'de notice that much of a difference...but yea, the 00-02 use the LS6 manifold. or maybe the 01-04? not sure.

as for 1/4 mile times...i personally wouldnt know what i do in the 1/4..but in the 1/8 with lots and lots of practice runs, i ran a 8.8 at sealevel. which probably equals out to a 13.1-13.2?..i was dead even with a Z06 vette with boltons, ignition, and ecu. guy sure as hell had a bad run that time, he said hes run low 8's in the 1/8, plus he had another person in the car at the time.

made me feel pretty good about the Z

[96z28m6]

Well actually importkiller with some practice u can do it with ease

[fbodywhore]

Originally Posted by mr._bowtie

Throw in a stall converter and you will anilate most manuals off the line. Car for car if both drivers were good. They would be almost identical. I have raced both and beat both. Mines a a4. Its hard to shift faster then a auto with a shift kit or some tuning done. The manuals advantage is in being able to launch at a higher rpm and not having as much drivetrain loss but we are only talking about maybe 3% drivetrain loss. Not enough to really make a difference.

now i dotn know about camaro's and such, but i know hondas, toyotas, and nissans in their AUTO's actually use a smaller cam. the manual's get the bigger cam. so this is my theory on the auto motors: they are slower not only becuase of the transmission, but because of the actual performance it lacks to put down to the ground. my 6 speed>your auto. just trust me on that.