blkZ28spt

As stated above, you don't get an "LS6" series oil pump until 2001. *2000's had some but there is no known way to tell whether or not your car has the new design.

There is nothing wrong with 98s. Check the STICKY at the top of this thread, posted by JRP, the FAQ....it has a "differences between the years" link towards the top. Read it.

Mine has served me well. It doesn't make quite as much power as some of the newer ones, or run quite as well, and only as 65k miles but the engine is rock solid. I'm sure a set of heads will (eventually...) wake it up even more.

Only problems I have had with stock components, in five years of ownershiop: Window motors (problems with every year), worn 3-4 clutch pack (all year 4l60Es are kinda weak) and a broken posi (again, all years are weak, can only go 1.6 60s so long on a stock ten bolt).

I am happy with mine.

'Trust'

iTrader: (24)

^^ I'd say yours does very well, 385RWHP SAE and unlocked with a 4k stall? Thats nuts.

1BDWS6

iTrader: (8)

What's really nuts is the guy that said he did 340/rwhp with a catback and running 87 octane. I find that hard to believe because first it's a 98 and with 87 octane there should have been so much knock retard that you'd be lucky to make 250hp... But there are freaks out there I'm sure.

My2ndls1

iTrader: (3)

My 98 SS dynoed at 316 rwhp/ 330 rwtq with only an slp lid and cutout. With the cutout closed it still managed 314 rwhp. Not too bad... I've been very happy with mine except for the typical F-body creaks and squeaks that you get from any year. FWIW, my brother's '02 WS6 with similar mods put down 330 rwhp/ ~350 rwtq (His also had an aftermarket Y-pipe and a few extras that the previous owner had installed).

dedge

If you mod one up the A4's can be a real bitch to get the shifts rite without banging the rev limiter. Don't ask me why but this is the only trouble i have run into, definatly a male car . all it wants to do is BANG, BANG, Bang.

'Trust'

iTrader: (24)

I ran into that, but it was mainly due to traction, spinning em faster than the tranny could shift.

Z28LS1camaroguy

iTrader: (3)

i beg to differ with that quote, http://www.texas-speed.com/shop/item...d=170&catid=44

read that and what it says about a 98 Z28

RPM WS6

iTrader: (3)

Quite the oppsite in my experiance. After working with plenty of '98-'02 LS1s w/ 4L60Es, I've found that the '98s are more tolerant of trans/TC mods and have the fewest issues with torque managenment. Seems like with each passing model year, it's been harder and harder to get past TM issues and solenoid DTCs when adding shift kits/higher stall TCs.

I've personally owned a '98, '99, and '00 LS1 (all A4s at varing mod levels) and so far I've liked the '98 the best for various reasons.

UltraZLS1

iTrader: (13)

Z28LS1camaroguy- Yet they show a dyno graph of a 2000 Z28

Z28LS1camaroguy

iTrader: (3)

but do you really think a well known site like that would make up something about a 98 with stock heads going 10.5??

'Trust'

iTrader: (24)

Their 10.5's car is most likely a Automatic, meaning the dyno readout will not be as high due to stall built tranny etc, hence using a M6 2000 for the dyno sheet makes sense. I'm sure you could talk to the rep for Texas Speed on this site and they'll set you straight.

UltraZLS1

iTrader: (13)

No need to get all in bunches...I have a 98 myself...and I dont doubt that the car did a 10.5 with stock heads. I never said that.

But I dont get what this 10.5 proves?
I said that 98 ls1s tend to dyno lower (or in other words"be down on power" )with a cam only set-up...which I have seen time and time again on this web site.
I never said anything about track times.

Maybe Im right maybe Im wrong...I was just throwing out my .02 from what I have gathered over the years

NYC FRANK

Good Stuff!

Z28LS1camaroguy

iTrader: (3)

UltraZLS1 i wasnt saying you were wrong or anything, but that 98s arent the little crappy LS1 car that alot of people make it out to be.

RPM WS6

iTrader: (3)

Not sure who these "a lot of people" are, but I can tell you this; anyone that thinks '98s are "crap" while '99-'02 are "good" is either so high that they're practically in orbit or they have limited/no LS1 experiance at all. Disregard their comments as ignorance and move on with life.

Fact is, '98 was the first year for LS1 F-bodies. This means that on average, '98s have more miles and more use than any other year of LS1 F-cars, so it stands to reason that on average they will have more parts failure due to age than an '02 car with less miles/use.

My '98 burns no oil and has no piston slap. Can't say the same for the '00 car I sold.

fire_boy06

There is nothing wrong with the 98. Just because it is a 98 does not mean its a bad car.

SladeX

As far as the 98 goes and oil pump failures, the issues with that happened early on in the lifes of those pumps. If you are buying a car now and it has good pressure and god knows what mileage, odds are its not going to be a problem with that car. If you are swapping the cam, you're in there anyways, put in a LS6 pump or fix the spring in the LS1 pump and do a bit of porting. Problem solved. If it's still working good for you.

RPM WS6

iTrader: (3)

In addition, this is not a '98 only problem. '98-'00 all faced this potential issue, and we're talking a VERY small percentage of motors anyway.....

SladeX

the net tends to exaggerate the problems...

the only one I won't take lightly is how weak the 10 bolt can be. One of the guys at our meet the other day has "potentially" grenaded the gears at the least on his 10 bolt. Considering the 4th gen and 3rd gen shares that damn rear, and I've had 2 sets of gears go on my 3rd gen, I watch my 4th gen rear like a hawk until the 12 bolt funds have added up...

jswelburn

Finally, someone who corrects this damn myth!