i've got a question for all you ls1 guys. I'm planing on selling my lt1 vert for an ls1 in a few months and i've been wondering about the trash talk i've heard about the earlyer model LS1's compared to the later ones, i've heard there quite a bit slower. Anyone got any idea's or comments?

 

I think the better intake manifold on 01-02 would give them a slight edge.

 

Ahhh but 98-99's have bigger cams stock, so put the LS6 manifold on a 98-99 and you're good to go. Much cheaper too!

 

We are talking about 10hp difference at tops and I mean very tops. 10hp is the factory rated difference between a 98 Z and 02 Z.

 

no matter wath ppl may tell you, 98-02 is ALL on the driver!!!!! once one is modded, its all up for grabs... they near same times, so close, it ALL matter on the driver!!!

cory

 

And for the millionth time, the factory horsepower ratings don't mean a thing. They're BS.

The 01-02 cars are generally a smidge faster. But does that mean a 98-00 car can't beat one? No. The differences are almost negligble.

 

That's my point, the factory says it is a 10hp difference and we know it is a little fabricated.

 

they have a little more HP but its not noticeable.

 

As said before, its all up to the driver. But, if you want to get technical... the 98-99 pretty much the same car, they do have a larger cam than the 01-02 except that the 98 at larger injectors, but in 00 they switched to yet a "little" bigger cam, and new high flow exhaust manifolds (about the same power as shorty headers). In 01-02 have the LS6 intake, and they kept the exhaust manifold but went to a smaller 6.0 cam from the trucks to gain a tad down low.

 

Ive actually heard several times that the 99's were the fastest ones around.

 

I ran my 99 M6 Z28 vs my friend 01 M6 Z28, and thumpted him pretty decently.

He was 100% stock... I had a Borla cat-back, and a lid...

To be fair, he wasn't the greatest M6 driver in the world, but then again, neither am I....

 

I have a couple of friends with '99 models and they both run low 12's with very few bolt-ons.No problem with their cars! Although mine is slow .....

 

actually the factory says its 5 hp difference..

I have seen some 98-00 dyno at or below 300 rwhp.. and 01-02 cars dyno at 305-320... so ya just never know..

as for the "smaller truck cam" sorry... the larger cam, as I recall, doesnt do much off the line. my car does pretty nicely and feels good. I would rather have more power down low for launching than not..

 

Posted in the Kill Forum... I had raced a '98-99 Z28 from a 55mph roll, that had the exact same mods as me, and I pulled one car on him by the end of 4th gear. The '01-02s have a tendency to dyno higher, but it's not such a big deal to not consider getting an earlier LS1. Once mods start it doesn't really matter anyways.

 

I hope so.although my best friends runs a 13.0 and its a 98 w/only headers