I have noticed some year specifications in looking at some parts catalogs and was wandering what changes have been made to the current LS1 cars since 98. Sorry for the newbie question but I am trying to learn.

Thanks

 

Body wise, practically nothing, 01-02 models got the LS6 manifold, so all got +5 HP, other than that I dont know

 

Air lid 98-99 did not have air pump hose connected to it.01-02 does.
98-99 had stainless exhaust manifolds, 00-02 cast iron.
y-pipe on 98-99 welds on, 00-02 bolt on.
98-00 have a visable egr valve front of the passenger side head, 01-02 dont.
01-02 got the LS6 manifold, block, and some other stuff, cams were different too.
98-99 had the 5 spoke flower looking wheel(16x8)00-02 had some ugly wheel(16x8), SSs' had the ZR1 17x9 wheel for 98-99, 00-02 had the 10 spoke in chrome or silver, but you could get the ZR1s chrome as another option. there is probly more thats all I can remeber right now!

 

LS6 block?? I thought that all the Ls1 blocks where the same.

 

nah, there's a difference between the ls1 and ls6 block, something about tryin to make it eat less oil, not exactly sure, but i'm sure someone here has to know.

 

Is there a performance gain to be made in just the ls6 block, i.e. stregnth in any part of the engine over the ls1, more main or head bolts or different positions. Do the 98-00 cars have the same modification potential as the 01-02? Are there any major drawbacks to the 98-00 cars versus the 01-02 cars except the oil consumption? Just trying to take in all the information that I can about these cars. Thanks again.

 

were the clutch hydros upgraded in 00 or 01?
i have a 00 and its clutch time, do i need upgraded hyrolics..

 

Body Changes...

1998-1999 Z28 and SSs had black mirrors, the later LS1s mirrors were the same color as the body...

 

I personally feel anyone should buy the newest one they can afford. It's kind of like buying a 911, they got better every year.

 

your just saying that cuz you have a 02

ill take my 00 cam anyday..stock anyways..

 

Power steering oil cooler on the '02 from the factory. They added it in on the top radiator hose. Welcome to the F-Body fun. Later>>>>>

 

Changes for 99-00
------------------------
Smaller fuel injectors

Changes for 00-02
------------------------
Cast iron tubular exhaust manifolds
Air pump hose on the airlid

Changes for 01-02
------------------------
!EGR
6.0L Truck Cam
LS6 intake
Z06 clutch parts
Fuel injectors (flow more)
Reprogrammed computer
Different MAF
Revised rings to fix oil consumption (late 01-02)
Bolt on y-pipe

Chris

 

01-02 get the better clutch hydraulics.

 

If memory serves me, the biggest difference in the LS6 block was improved windage clearancing.

MarkT

 

I really appreciate all the help from everyone, it has helped satisfy my curiousity. Thanks.