87 l98 and 92 l98

I am wondering wat would be faster. I know the 92 has a little more power but i am not sure about the weight differences. would this just be a drivers race or is there a difference? Also were t-tops available with a 350 in 87?

wow nobody knows? If u do get those posts up here!

I'd go with the 92 and 245hp.

I am wondering wat would be faster. I know the 92 has a little more power but i am not sure about the weight differences. would this just be a drivers race or is there a difference? Also were t-tops available with a 350 in 87?

Apparently no 350 cars left the assembly line with t tops, but supposedly dealers could get them converted. I've never seen pictures of a 350 T top car. Same goes for the 350 and convertible debate. None left the assembly line, but supposedly some conversions have been done.

i think 87 there might of been ttops cause check this out
http://cgi.ebay.com/ebaymotors/IROC-Z-350-TPI_W0QQitemZ120086065535QQihZ002QQcategoryZ6161QQ rdZ1QQcmdZViewItem
i have seen a few others too.

Do NOT use ebay as your frame of reference. So many people try to pass off LB9s as L98/B2Ls it isn't funny. Unless you see the block casting # in person you cannot tell if it is a "real" L98. Like I said, a 350/t top car is theoretically possible.

I would go with the 92 car. No T-Top cars available with the L98 in 1987. I believe they came available sometime in late 1988. I know for sure you could get a L98 and T-Tops in 1989 as I bought one and still have it. I believe they were also available in 1990.

Well the '87 L98 produces peak torque at 2800 vs. other years 3200. I think 87 used different cam than every other year.
http://www.iroc-ss.com/history.htm

yes the 350 came in a t-top car till 91. you can't find a 91-92 with a 350. click on my cardomaim and look at the blue stunt car. I was and 89 with the 350, and t-top. Vin matches.

yes the 350 came in a t-top car till 91. you can't find a 91-92 with a 350. click on my cardomaim and look at the blue stunt car. I was and 89 with the 350, and t-top. Vin matches.

nice stunt car. how did u get a hold of that? thats a good movie btw.

I just noticed the L98 350 issue about t-tops. My car had an L98 fron the factory and I have factory T-tops. T-tops were only available on L98 in '87, '88 and '89. Also 5-speed tpi 305 1990-92 cars could not have T-tops.

you could get an iroc with t-tops, they had issues with the body and later decided not to go that route with the 350's in the 91-92 camaro only cars. the pontiac versions had them all through the thirdgen years.

as for faster. the 92. especially if it had the smog and a/c delete but even stock for stock the 92 was and is faster comparing equally.

:)

You can get t-tops. in 90-92 but not in G92 and TPI 5-speed cars. All L98 cars had G92 just for clarification of my earlier post. Thats neat to know about the T/A's having them all years.
Also, for some reason the fastest stock IROC recorded 0-60 was the '90 L98. It was 5.8 to 60 from a stop and did the 1/4 in 14.4. It's shown here http://www.albeedigital.com/supercoupe/articles/0-60times.html I used to have the magazine back in 1990 but cant remember which one it was.

My '92 L98 ran a 5.4 0-60 and a 1/4 at 14.2 when it was totally stock with 108K miles on it.

is it possible to have a non ttop car converted to having ttops by an aftermarket shop or maybe a dealer. i know u could back then by the dealer but i am guessing u cant anymore right?

t-tops are not good.
esp. on a 3rd gen.....very bad, I have never owned one myself just 3 hardtops, All had alignmen t problems, all the t-tops cars i've seen the door about falls off when you open it

t-tops are not good.
esp. on a 3rd gen.....very bad, I have never owned one myself just 3 hardtops, All had alignmen t problems, all the t-tops cars i've seen the door about falls off when you open it

:rolleyes: I have t tops with 0 issues. They have not leaked when I've washed the car or the 2 times I've been caught in rain on accident.

t-tops are not good.
esp. on a 3rd gen.....very bad, I have never owned one myself just 3 hardtops, All had alignmen t problems, all the t-tops cars i've seen the door about falls off when you open it



My first camaro was a '91 RS with t-tops and I never had a bit of problem with them. I absolutly loved them. If the temperature was above 60° and it wasn't raining, those tops were off.

I had some hard top 3rd gens....All of them had ripped the metal above the rear of the side windows, all of them needed hinge kits and hinge pins, even with subframes I busted the windshield out of one of em.....

I have never seen a t-top 3rd gen that didn't leak....One reason I veared away from 3rd gens....

4th gens leak too. At least the convertibles do.

The 350/T-top 3rd gen issue is an odd one. Many people asked about getting T-tops when ordering the cars new but were told you couldn't get them. Even in the years that they were available.

I have never had t-tops and would never want them....just not my thing

I had some hard top 3rd gens....All of them had ripped the metal above the rear of the side windows, all of them needed hinge kits and hinge pins, even with subframes I busted the windshield out of one of em.....

I have never seen a t-top 3rd gen that didn't leak....One reason I veared away from 3rd gens....

My 86 and 88 Birds with t-tops didn't leak.

My '92 L98 ran a 5.4 0-60 and a 1/4 at 14.2 when it was totally stock with 108K miles on it.

Was that with a G-tech? Just curious how you measured it. When my car had the l98 A G-Tech measured 0-60 IN 6.1, 1/4 IN 14.1 @ 101MPH. I would like to believe that but since the car had 180,000 I figured it must be wrong.

92 better fuel injection,plenum, and heads than 87.
91 z28 with L98 vette cam and catback 14 flat 1/4 on crap tires and 60'.

is it possible to have a non ttop car converted to having ttops by an aftermarket shop or maybe a dealer. i know u could back then by the dealer but i am guessing u cant anymore right?

yes it was possible, the ones running around today are only specially ordered that way. few select dealers did do this. gm however does not recognize them as their own cars and never covered it under warranty.

t-tops are not good.
esp. on a 3rd gen.....very bad, I have never owned one myself just 3 hardtops, All had alignmen t problems, all the t-tops cars i've seen the door about falls off when you open it

never had t-tops personally until i started buying spare cars. just picked up a reasonable 91 rs driver with t-tops and during thanksgiving it was warm enough to take the tops off so i did.

hate to say it but i love it, the car doesn't leak, definately rattles a bit more and yes i see the issues with the doors but the car has 140k miles on it. reset everything and i'm sure it's fine when taken care of. you have to consider it's a hole in the roof and a cheap car. you can't expect perfection but i've been thoroughly impressed. way to expensive though on the maintance. $700 a t-top from gm and $200 in seals to make it seal right. just crazy but so is life.

4th gens leak too. At least the convertibles do.

The 350/T-top 3rd gen issue is an odd one. Many people asked about getting T-tops when ordering the cars new but were told you couldn't get them. Even in the years that they were available.

several that i know who are original 305 z28 t-top owners have them because they were turned away from getting t-tops with the 350 and they had to have t-tops. every person i've spoken with that worked on the cars during those years also backs up the story that there weren't any 350 t-top cars that left the factory... but with life, anything is possible.

My t-tops leaked.. there was a minor door hinge problem on the driver side.. but think about it. A 22-year old car, HUGE, HEAVY doors, and t-tops, and the driver door hardly sagged. But other wise, the t-tops were a Godsend. No alignment problems.

I use my T-tops all the time. I like the way it feels blowing my mullet around. I have had 6 different IROCS and I only had one that ever leaked during rain. I guess I'm lucky cause I always hear complaints about leaking. The one thing I do get is when I'm washing the doors some water drips inside the glass. Not much. But I spray the glass with lots of pressure. I would think replacing the T-top rubber every 15 years would eliminate it.
I spoke with a local sunroof installation shop and they said they did a lot of T-tops back in the 80's. They said they could still do it for about $1500. So if you really want to do it ask around or look in the phonebook.

even hard tops leak a bit around the glass. it helps to adjust the glass over time as well.

As to you could not get an 87 Iroc with T-Tops and the
L98 is not correct.:rolleyes:

I optioned and bought mine in Dec of 86 and took
delivery in 87. There are alot of them.

I must be lucky as my T-Tops don't leak but only have
32,800 on the car.

T-Tops with Sub Frame Connectors a very good idea even
if you don't have a big horse.:)

Later

Irocing

I would go with the 92 car. No T-Top cars available with the L98 in 1987. I believe they came available sometime in late 1988. I know for sure you could get a L98 and T-Tops in 1989 as I bought one and still have it. I believe they were also available in 1990.

Haha you couldn't be more wrong.
My 87 had a factory L98 and has Factory t-tops.

Mine is an '87 T-top also.

I stand corrected. :D

As to you could not get an 87 Iroc with T-Tops and the
L98 is not correct.:rolleyes:

I optioned and bought mine in Dec of 86 and took
delivery in 87. There are alot of them.

I must be lucky as my T-Tops don't leak but only have
32,800 on the car.

T-Tops with Sub Frame Connectors a very good idea even
if you don't have a big horse.:)

Later

Irocing

Low mileage car in Arizona. No wonder it doesn't leak.

Low mileage car in Arizona. No wonder it doesn't leak.

How about a high mileage car in the Mid-Atlantic? 22 years old, 200K miles, and 0 leaks. T-top seals were replaced with a GM kit back in 2001 due to a passenger tearing a seal.

Back to the OT - like stated before, the 92 L98 has lighter pistons, a better intake tract due to the deletion of the of MAF, and a much better dual converter exhaust with a larger intermediate pipe. Cam profile differences were minimal, as were any weight differences. The later speed density L98 have always proven to be quicker stock than the MAF cars, both in magazines AND in the real world. My old 91 Z28 with the L98 went 14.4 on the stock replacement Goodyears - car was untouched and I was a drag racing rookie.

UH HUH,

Low milage car in AZ but I wash it alot;) Does that count?
Just luv a black car:(
Later

Irocing

Was that with a G-tech? Just curious how you measured it. When my car had the l98 A G-Tech measured 0-60 IN 6.1, 1/4 IN 14.1 @ 101MPH. I would like to believe that but since the car had 180,000 I figured it must be wrong.


The 1/4 mile and ET were from the track and the 0-60 was a police friend of mine with his radar gun and a stopwatch.

ttops came with the 350 in 1987'88'89 and only with a auto trans ..i have a 1988 iroc 5.7 tune port numbers match with ttops ...

ttops came with the 350 in 1987'88'89 and only with a auto trans ..i have a 1988 iroc 5.7 tune port numbers match with ttops ...

Just for clarification you mean t-tops were available right. 1988 is the first year of the serpentine belt right? I wish I had just one belt.

Yes, 88 was the first year with the single serpentine
belt, but very easy to convert over to.

Did mine as well as many others years ago. If I remember
alternator moves sides and you can get smog delete
bracket and belt that cleans it up even more.

HTH;)

Later:D

Irocing

Most of the t-top cars that leak are the owners fault due to not taking care of things. T-top seals dry rot over time. You need to keep them conditioned, especially if you drive with them out alot with the sun and wind beating on them. Also make sure you keep an eye on your door hinges. with a little TLC you can keep your t-top car nice and dry. And a T-top car is awsome cruising the beach at night with your lady by your side.

And a T-top car is awsome cruising the beach at night with your lady by your side.

Yep. My dad lives along Lake Erie, a really nice part of it, and I can vouch for this post :yes: