New LS1 Owners - Newbie Tech - difference in LS1 years

ok gotta question did a lil research and i cant seem to find anyhting. I am wondering what the diff is between 97-02 LS1s as for my project im finding 98-99 LS1s pretty cheap and i am wondering if the power difference is in the computer, or the heads comrpression or whatever else. Can u make the power of an 98 or so LS1 with a computer upgrade, chances are that ill be running megasquirt so would that over come the power difference, "ie tuning". Just wnating to know the difference betweent the years thanks alot guys.
-chris

if memory serves me correct the 97's werent ls1s..

if memory serves me correct the 97's werent ls1s..

In the Corvette they were... ;)

ok gotta question did a lil research and i cant seem to find anyhting. I am wondering what the diff is between 97-02 LS1s

Can't find anything? Did you check the stickies at the top of this forum?

This is what you want:

http://www.ls1tech.com/forums/showthread.php?t=213148

Can't find anything? Did you check the stickies at the top of this forum?

This is what you want:

http://www.ls1tech.com/forums/showthread.php?t=213148

oh thank you so iguess there isnt really a huge difference between all of them hmm have to keep that in mind, except for cams, thanks big help

oh thank you so iguess there isnt really a huge difference between all of them hmm have to keep that in mind, except for cams, thanks big help

No problem. :cheers:

Keep in mind if you're buying a complete motor the '01+ motors will have the LS6 intake. ;)

00-01 ls1's had some piston ring issues in corvettes.

00-01 ls1's had some piston ring issues in corvettes.

is that just in corvettes?

I won't be suprised if someone chimes in and says that all 98 Camaros/trans ams had a bad oil pump. But that's just not a proven fact as there are so many 98's that haven't a problem with that. Just throwing that in there for you.

the earlier ls1's had larger cam and egr, NO ls6 intake.
the later ls1's had smaller cam, NO egr, and a ls6 intake.

that's all i got.

yup most people will say stay away from the 98's. Harder to tune,weak oil pump etc.. i peronally seen a 98 with 187k on it and it ran great! Here is another even higher mileage

http://www.autotrader.com/fyc/vdp.jsp?car_id=213851004&dealer_id=86399&car_year=1998&model=CAM&num_records=&make2=&start_year=1998&keywordsrep=&keywordsfyc=&engine=8+Cylinder&certified=&body_code=0&fuel=&search_type=used&distance=200&make=CHEV&color=&min_price=0&drive=&default_sort=priceDESC&max_mileage=&style_flag=1&sort_type=priceDESC&address=08402&advanced=y&end_year=2007&doors=&transmission=&max_price=6500&cardist=70

I'd buy that car today if I had the money. High mileage cars don't scare me a bit.

I hope you guys are aware that the '98-'00 LS1 all had the same exact oil pump. The revised one didn't come out till '01.

A '99 or '00 car has just as much risk of random pump failure as a '98 car.

Actually, the only guys I've known to have pump failure have been '99 owners.

01/02's also may have ls6 block as well.. thers a post on here somewhre of how to identify this if or when you buy the motor....

tho the ls6 BLOCK won't give an increase in power.

tho the ls6 BLOCK won't give an increase in power.
no wont but still makes its differnent from the other yrs

I hope you guys are aware that the '98-'00 LS1 all had the same exact oil pump. The revised one didn't come out till '01.Mid-year 00 cars got the new pump - 241 heads are a good indicator that it has it. ;)

I have a 98 and have no problems with the oil pump yet. I have 135k miles on it she does not leak any oil or have the piston slap some of the others ls1 cars have.

http://www.smokemup.com/tech/ls1.php

there's a little write up just for a little more technical info

98-00 had worse lifters, worse rod bolts, worse oil pumps, and no chance of an LS6 block, as well as an LS1 instead of an LS6 intake. The 98 can only be honed .05 and the 99+ can go .010 (I am very sleepy, there may be another 0 in front of those #'s).

The 01+ got a smaller cam, bigger injectors, LS6 intake, LS6 clutch and hydrolics.

99+ IIRC got a Torsen differential and hte 98's had the Auburn

98 had the only usable gas tank cap tether and the only guages that really registered anything (temp, ect, I think that was ended with the 99' production and now we get "dummy guages" on the temp).

98-00 had different exhaust manifolds

01-02 got pup-cats and deleted the EGR

the 4L60E had weak sun gears in 00 from what I heard

Some people say the 01+trannies have carbon-fiber syncros, others deny this

The 02 cars got a napier faced oil ring and are less likely to use oil overall.

I am sure I could go on, but I think I got the major ones.

thanks guy, so just curious can you swap oil pump?

The 01+ got....bigger injectors....

98-00 had different exhaust manifolds

01-02 got pup-cats and deleted the EGR

'98 had the same sized injectors as '01+.

'98-'99 had different manifolds. '00+ got the new ones.

No "pup" cats on F-bodies. That's a vette only deal. All years LS1 F-body had only 2 cats (one per engine bank).

thanks guy, so just curious can you swap oil pump?

Yes you can, but I wouldn't worry about it unless you're already in there doing a cam swap or something. Probably less than 1% of these cars had a faulty pump from the factory, it's a very, very rare failure.

I love the threads talking about the differences in the 98-02 ls1's :engarde: I just seem to get more confused about all the differences.

I love the threads talking about the differences in the 98-02 ls1's :engarde: I just seem to get more confused about all the differences.
:werd:
-just when I think I got it down

on that link posted with all the differences on it, it says in 2000 there was a smaller cam and injectors. is the smaller cam the vortec truck cam mentioned in the 01+, or is it just different than the 98 99 01 02?

on that link posted with all the differences on it, it says in 2000 there was a smaller cam and injectors. is the smaller cam the vortec truck cam mentioned in the 01+, or is it just different than the 98 99 01 02?

Never noticed that before.

The '99-'00 cars do have smaller injectors than '98 or '01-'02, but the '98-'00 cam is all the same. It's the '01+ that gets the smaller cam.

Hope that clears things up for you. :)

Never noticed that before.

The '99-'00 cars do have smaller injectors than '98 or '01-'02, but the '98-'00 cam is all the same. It's the '01+ that gets the smaller cam.

Hope that clears things up for you. :)

oh ok i see lil confusing but i am grasping it

which cam was better for performance? the 98-00 or 01+

which cam was better for performance? the 98-00 or 01+

Considering the '98 cam is higher lift and duration than the '01+ cam, I'd say the '98 will offer better performance, all other things being equal.

They aren't any faster stock for stock though, because the '01+ cars had the addition of the LS6 intake manifold over the '98-00 LS1 manifold, so it evens out with the cam.

Considering the '98 cam is higher lift and duration than the '01+ cam, I'd say the '98 will offer better performance, all other things being equal.

They aren't any faster stock for stock though, because the '01+ cars had the addition of the LS6 intake manifold over the '98-00 LS1 manifold, so it evens out with the cam.

The cam in 01-02 f-bodies are the same ones used in the 6.0L Chevy Truck. They may make very slightly less horsepower but they more than make up for it in torque production. My car made 346 rwhp and 364 rwtq with the only power addition being full exhaust.

The cam in 01-02 f-bodies are the same ones used in the 6.0L Chevy Truck. They may make very slightly less horsepower but they more than make up for it in torque production. My car made 346 rwhp and 364 rwtq with the only power addition being full exhaust.

Yes, generally the '01+ cam will make a bit more torque and also produce more power/torque at lower rpms. But the LS6 intake helps it to out-dyno a '98-'00 motor stock for stock.

this thread needed ONE response!

http://ls1tech.com/forums/showthread.php?t=213148

Read the stickies! This particular sticky is even in THIS forum.

this thread needed ONE response!

http://ls1tech.com/forums/showthread.php?t=213148

Read the stickies! This particular sticky is even in THIS forum.

I already posted that link back on the first page. But often it seems that people like to still rehash the issue. :)

I already posted that link back on the first page. But often it seems that people like to still rehash the issue. :)

well then very good post! :)

:jest:

I have a 2001 WS6 with LS1 and LS6 intake manifold. I used to get ticking and knocking noises pretty bad. After extensive research, testing and parts replacements at the local dealership, they couldn't figure out what was still causing the problem. Sounded like a lifter so they replaced my lifters. Noise still came back. Few more times in the shop with more parts being replaced, the noise still wouldn't go away. They brought out a GM rep who decided it was time and I was favorable for a new long block. They kept my car for a week and got it all back together and the noise was gone. Every once in a while it would show up but nothing like it would with the old engine.

Come to find out that all 2001 LS1 engines in Camaros, Trans Ams, Firebirds, and Vettes had different valves and springs in them that were lighter saving some weight and at the same time allowing it to rev up higher faster. With that being said, that's what contributed to my oil consumption I saw. I was using at least a quart of oil a month adding to it. I didn't rev like I used to anymore which was sad, but I didn't go through oil like I used to either. I have tuned it and modified the car now that it doesn't matter.

I love having my engine have half the amount of miles on it that my car has!