downtown_ss

I have heard there is a difference in the 98 to 00 LS1s towards the 01 and 02 Ls1 motors. What is the difference in the 2??

mite53

iTrader: (2)

There is actually quite a few things different, between them. 01 and up have the ls6 intake, they have a different cam from the the lq9 truck motors to give better low end torque and better emmissions,slightly bigger injectors i think, there is no egr, the throttle body's are different thats all i can think of for now, im sure someone will add other differences if there are any.

02silvaZ

iTrader: (12)

dude, check out the FAQ sticky above, all of this has been covered numerous times, it has good info, this will get locked very soon

Bad Blue WS6

iTrader: (41)

98/99's have the worst flowing heads (853's)
i think 98, 99's and 2000's have bigger cams than the 01/02's
TB's are different 98/99 have a differnt sized TB cam..
98/99/2000 have LS1 intakes stock,,01/02's came with LS6 intakes
rims!

primer84z

iTrader: (7)

for being in the sticky people always post up bad info. 806 heads are on the 98's...

Bad Blue WS6

iTrader: (41)

My bad,,,i thought 853's were on both early years,,thanx for the correction.

twitchtwice

iTrader: (12)

he's new here, give him a break.

primer84z

iTrader: (7)

no problem dude, I wouldnt have known if I hadnt had a 98 and a 99.

Super Speed

iTrader: (8)

some 00's had upgraded rod bolts while some people say 01-02's came with them some later 00's also came with 243' heads as well

jmdale1984

iTrader: (6)

To the best of my knowledge... 243 heads didn't even exist until 2001 (when they were introduced on the Corvette Z06) and they were never put on f-bodies. Wouldn't suprise me if a couple 01-02 f-bodies/base y-bodies got them, since GM seemed to use LS6 parts whenever they ran short on LS1 parts.

98 - 28 lb injectors, LS1 intake, poop heads, EGR/AIR

99 - 26 lb injectors, LS1 intake, EGR/AIR

00 - 26 lb injectors, LS1 intake, AIR/Revised EGR, revised exhaust manifolds

01 - 28 lb injectors, LS6 intake, AIR only, a couple had LS6 blocks, smaller cam, upgraded hydraulics (M6 only), revised exhaust manifolds and MAF sensor

02 - 28 lb injectors, LS6 intake, AIR only, 10% had LS6 blocks, smaller cam, upgraded hydraulics (M6 only), revised exhaust manifolds and MAF sensor

That's the best I can do off the top of my head. I could be off on a couple things, but I think that's pretty accurate.

Basically, 98s got screw on heads and intake, 99-00s got screw on intake and injectors, and 01-02 got screwed on the cam. 01-02s always put down the best dyno numbers stock.

02silvaZ

iTrader: (12)

he's been here a year bro!

02silvaZ

iTrader: (12)

and i wasnt tryin to be a *****, just tellin him where to look

bene

iTrader: (16)

later model 2000s and 01-02 LS1 have 241 heads.

kidcamaro98

iTrader: (8)

how can we find out if we have a LS6 block??

twitchtwice

iTrader: (12)

im guessing if it was later on in the year 02 or if it was built on tuesday-thursday. haha jp

5_02ls1

iTrader: (20)

the heads really aint that bad on 98s ....97 98 had perimiter bolt valve covers...
but the heads arwent as bad as most let on....

Bulldog0082

How can you tell on a 2000 what kind of heads you got?

Super Speed

iTrader: (8)

Correct

King Nothing

iTrader: (9)

pop your hood and look on the corner where the valve cover seal and the head meet and it'll have a casting number. my 2000 SS was actually built in sept of 99 so i have the 853 heads . . . course some 241's are sittin in my garage right now

02silvaZ

iTrader: (12)

my 2000 has 241's