13.0???

What would a 98 trans am with just and exhaust, lid, intake, and some work on EFIlive (friends hardware) run?? I was thinking 12.8- 13.0?? Any inputs

If you are lucky.
What tires?
Are you driving or is someone that is used to the track driving?
It is completely different than the street.
I would say 13.0-13.3. All depends on the launch.

Yeah im driving, i still hafta practice launching like u said. Launch is the crutail part. I dont have DR's or anything.

13.3-13.6
Probably the lower half of that.

What changes have been made using EFILive?

Curtis, l thought maybe LS1s run low 13s even l heard some people ran 13 flat.. he is not an experienced driver thats why u say 13.3 or13.6?

It takes PERFECT conditions to run that 13.0 with a stock car. Weather has to be perfect, track prepped well, car running strong that night, etc...
Someone that can pull off a 1.9-2.0 60 foot time and shift QUICKLY.

Most stock LS1 F-Body's run 13.5-14.0.

My best 60 foot time was 2.139 on street tires. Might give you an idea.

It takes PERFECT conditions to run that 13.0 with a stock car. Weather has to be perfect, track prepped well, car running strong that night, etc...
Someone that can pull off a 1.9-2.0 60 foot time and shift QUICKLY.

Most stock LS1 F-Body's run 13.5-14.0.

My best 60 foot time was 2.139 on street tires. Might give you an idea.

wow!!! l didnt know that.. so, if an 80k miles LS1 would dyno, how much horses would it push at the wheels and flywheel..

l would love to know anything about LS1s.. cuz l just got paid and put into my savings account, l hope this gives an idea why l wanna know..;)

80 thousand miles the motor will probably start showing slightly lower numbers.
It all depends on how well the car was kept up. How hard it was driven, stuff like that.

I would say a 2001-2002 6-speed LS1 F-Body with 80K miles would still dyno around 310 RWHP.
Might lose a couple horse over the next 20K miles, might not.

80 thousand miles the motor will probably start showing slightly lower numbers.
It all depends on how well the car was kept up. How hard it was driven, stuff like that.

I would say a 2001-2002 6-speed LS1 F-Body with 80K miles would still dyno around 310 RWHP.
Might lose a couple horse over the next 20K miles, might not.

how about 98-99?

Little bit lower.
Maybe 295-305 RWHP if the car has the 6-speed.

I don't believe any year was any better, at least for longivity. The one year they say to avoid is the 1998's. If you can anyways.

My 1999 car made 320 RWHP with just lid and catback, which I guess is pretty stout for a 1999. When modded...it just doesn't matter.
And dyno numbers are just that....numbers. Great tuning tool, not always exactly a good figure as to how the car runs.

Your track times will all depend on the track you go to. The track I go to is at 1300 ft. elevation, so it has thinner air then say E Town. When I did the 1/4 mile in my car the best 60' I could manage was a 2.107 on drag radials :( With that, and literally nailing every shift I ran a 13.1 sec. 1/4 mile at 109 mph. That was at an estimated 2000 DA, so the car was barely in the 12's using the formula.

When the car was close to stock I cut a 2.2 sec. 60' on street tires, and ran a 13.7 sec. 1/4 mile at 104mph, at the same track.

I'd say that you would run a 13.5 sec. 1/4 mile at sea level. The people that post 12.8-13.0 sec. 1/4 miles typically leave out alot of factors, such as negative density altitude and ridiculous track prep.

Little bit lower.
Maybe 295-305 RWHP if the car has the 6-speed.

I don't believe any year was any better, at least for longivity. The one year they say to avoid is the 1998's. If you can anyways.

My 1999 car made 320 RWHP with just lid and catback, which I guess is pretty stout for a 1999. When modded...it just doesn't matter.
And dyno numbers are just that....numbers. Great tuning tool, not always exactly a good figure as to how the car runs.

well it is good to know these..

thanks Curtis..

What would a 98 trans am with just and exhaust, lid, intake, and some work on EFIlive (friends hardware) run?? I was thinking 12.8- 13.0?? Any inputs

LS1 m6 stock:13.1 on stree tires
stock on nittos 12.9

If its an M6 you can pull it off. Got to bang thrue those gears though.

Little bit lower.
Maybe 295-305 RWHP if the car has the 6-speed.

I don't believe any year was any better, at least for longivity. The one year they say to avoid is the 1998's. If you can anyways.

My 1999 car made 320 RWHP with just lid and catback, which I guess is pretty stout for a 1999. When modded...it just doesn't matter.
And dyno numbers are just that....numbers. Great tuning tool, not always exactly a good figure as to how the car runs.


watch the 98 comment there buddy, You may have more cubes but I have boost backing me up. :p

Hey...I have a friend here that just popped off a 10.8 at 137 here with his 1998 Z-28.
I don't have any personal experience with the 1998 being a bad year, just heard that a couple times.

Hey...I have a friend here that just popped off a 10.8 at 137 here with his 1998 Z-28.
I don't have any personal experience with the 1998 being a bad year, just heard that a couple times.


:lol: SKERD weren't you. I was just bustin' your chops.

I have no boost.

I am behind the fast cars. :lol: