#32pontiac

My question is, did chevy make a 1987 Iroc convert?

drop-top IROC

Yes, and if you ever find one that is not a basket case, buy it!

Bobsz28

I have a 1987 Convt. Iroc Z-28 with 78K original miles for sale. Excellant condition. 305 TPI. A/C. $7,650 bobbysummers@sbcglobal.net

Willie

iTrader: (1)

I bought a red 1987 IROC-Z convertible from the original owner back in 1992. Sold it in 1996. It went to New Zealand....

I bought a red 1987 Z28 convertible from the original owner back in 1994. I still own this one.

I bought a blue Z28 1987 Z28 convertible from the second owner in 1995. Sold it in 1998. It's still here in Tucson.

So there was a short period in time when I could open all three garage doors and you would have seen three 1987 Camaro convertibles. Man, I should have taken some pics....

Timberwolf

I just bought an 87 Iroc-z convertible, and through my research chevy didn't make the convertible, ASC did the conversion on them from T-top cars. there's a sticker on one of the doors saying such, and lettering across the back of the trunk lid also indicating the ASC conversion.
Also, and I may not be 100% correct int his, but I believe all 87 Iroc-Z convertibles were also 20th anniversary commemorative editions.

by the way, here's mine:

Willie

iTrader: (1)

.... through my research chevy didn't make the convertible, ASC did the conversion on them from T-top cars.

It's a matter of symantics. Technically speaking, this is true. ASC was the company that performed the conversions. HOWEVER, ASC was contracted by GM to perform this work. The car was shipped to ASC without many of the interior components, without t-tops and without the rear hatch. ASC then hacked the body and did their thing. Upon completion, the car was shipped back to GM where they completed the build. These cars are "official" convertibles and is signified by a "3" in the sixth position of the VIN.

ASC also performed conversions for individuals and dealerships. These cars were sold by GM as coupes and therfore, not "official". They will have a "2" in the VIN, reflecting Coupe.


Also, and I may not be 100% correct int his, but I believe all 87 Iroc-Z convertibles were also 20th anniversary commemorative editions.

Yes, only the 1987 convertibles (Sport Coupes and Z28s) are designated anniversary editions.


There were 263 Sport Coupe convertibles and 744 Z28 convertibles made in 1987. These production figures reflect an extremely small number to the total Camaro production of 137,760 that year. Very rare! But of the rare, the rarest in terms of production numbers is the LT convertible followed by the Z28 (non-IROC-Z) convertible. Here's my Z with polished IROC-Z wheels. The original wheels are stored with original and new P215-65/R15 Goodyear Eagle GTs.

Willie

Timberwolf

What is an LT convertible? And where can I find info on what all the different trim levels meant for the 87? I assume it is in the tech faq, and I will go look there after posting this, but if it isn't, can you provide some info such as what made an iroc-z different from a z-28, etc?

Willie

iTrader: (1)

For 1987 only, there were two Camaro models, the Sport Coupe and the Z28. Of these two, the LT was an option on the SC and the IROC-Z was an option on the Z28. Perform a Search on the History forum for specifics. Also, take a look at some of the stickies, especially mine dealing with LTs. There's a good deal of info over there.

Oops, I almost forgot, the RS was also available but sold only in California. No convertible RSs in 1987 though. Only beginning in 1989 when it replaced the Sport Coupe as the base variant was a convertible an option.

Willie

smokefan

hey wille was the 20th anv. edition come with the tbi motors and not the tpi motor. reason i ask this is cause i have seen 87 iroc verts on ebay with tbi motors in them and it has the 20th anv. elblem on the dash

Willie

iTrader: (1)

hey wille was the 20th anv. edition come with the tbi motors and not the tpi motor?

All 1987 Camaro convertibles received the "20th anniversary...." designation. The base engine on the Sport Coupe and Z28 was a 305 carb (RPO LG4). The TBI (RPO L03) replaced the LG4 in 1988. So technically speaking, there are zero 1987 Camaros with the TBI. Here's an interesting fact: In the convertible, the base 305 LG4 engine was produced only with the optional 4-speed automatic transmission. None with the base, no-cost 5-speed were made.

The 305 TPI (RPO LB9) was optional on the Z28 (with and without the IROC-Z option). And speaking of transmissions, this engine was available only with the no-cost 5-speed manual, ZERO 305 TPIs with auto tranny were made. Remember guys, this engine/tranny combo info is true for 1987 convertibles only, not coupes.

Willie

smokefan

thanks for clearing that up for me willie

cdartz

Ah the t-top rumor. I have heard this stated many times, and I don't know how it got started, but I disagree, and I have proof.

My 1990 IROC-Z factory VIN "3"vert was not a t-top car to start out with. The RPO code for t-tops is CC1. I do not have this code on my SPID label.

Timberwolf

good to know, but he asked about 1987 cars.... not 1990

Timberwolf

Any idea on the break down of the Z28 and Iroc-Z production numbers out of the 744?

Willie

iTrader: (1)

Any idea on the break down of the Z28 and Iroc-Z production numbers out of the 744?

Excellent question. Unfortunately Chevy did not keep records of option combinations and therefore, there is no further breakdown. Specifically, the IROC-Z was an option (B4Z) on the Z28 and the convertible (RPO Z08) was an option too.

I've been trying to find the answer to this question since 1994. You see, I own a Z28 convertible so I have a vested interest. Apparently, no one even has an "unofficial" answer. So the best I can do is to estimate using production numbers that are fact:

Z28 Coupe: 52,863
Z28 Conv: 744
Total Z28 Production: 53,607

IROC-Z Option: 38,889
Subtract this from 53,607 = 14,718 Z28s

14,718 / 53,607 = 0.27 or 27 percent Z28s & 73 percent IROC-Zs.

744 * 0.27 = 204 Z28 Convertibles
744 - 204 = 540 IROC-Z Convertibles

Since 1994, I have verified 12 Z28 convertibles and over 100 IROC-Z convertibles. This ratio is about 10 percent. I have a sneaky hunch that 204 is high based on my crude survey. But in 1987 when the convertible was released, my feeling is that most were IROC-Zs, which made it the most expensive top-of-the-line Camaro. Think back to when these cars were new. The IROC-Z was hot and everyone wanted one! So, I think it's safe to say that approximately 75 - 100 Z28 convertibles were produced out of a total of 744 Z28's and IROC-Zs.

Of the twelve that I have verified to exist, ten have the base LG4 / auto drivetrain and only two have the LB9 / 5-speed. Of the two, one has no options except A/C and the other is fully loaded (RPO 1SC). I'm very fortunate to own the fully loaded model.

Willie

smokefan

i can remember when i was a kid and my dad took me to the dealer to pick up his new 87 blazer and i seen the vert on the showroom floor. i feel in love with the car and i have been hooked ever since. i cried when my father bought the blazer instead of the vert

ajmclean

The 305 TPI (RPO LB9) was optional on the Z28 (with and without the IROC-Z option). And speaking of transmissions, this engine was available only with the no-cost 5-speed manual, ZERO 305 TPIs with auto tranny were made. Remember guys, this engine/tranny combo info is true for 1987 convertibles only, not coupes.

Willie [/B][/QUOTE]




but the 87 z28 vert in the video section iroc has a TPI engine and an automatic ,(may be round ****)
so i have 2 questions willie

is that because it's a prototype?


and what happned to prototypes (were they ever sold)?

Willie

iTrader: (1)

....but the 87 z28 vert in the video section iroc has a TPI engine and an automatic ,(may be round ****)
so i have 2 questions willie

is that because it's a prototype?

Round **** = 1986 or earlier. ASC did convert customer owned 1986 Camaros. Another indicator that I've noticed so far, is the 1986 convertibles have a black header panel around the front windshield. In other words, that's the exterior trim around the front glass. Production 1987's were body color.

Here's a 1986:

Willie

iTrader: (1)

And an 1987:

ajmclean

thats the first time i know about header panels

do u know if asc made 1985 convertibles,and do u have info
about them like how many were made?and if they had black header panel colored windshieled ?

Willie

iTrader: (1)

I have no information on 1985 ASC converted Camaros including whether any exist! But there were numerous other companies that performed convertible conversions as early as 1983.

Willie

smokefan

i think its the same guy in both mags driving the same car. looks like he was having too much fun driving it around...look he even grew a beard

Willie

iTrader: (1)

i think its the same guy in both mags driving the same car. looks like he was having too much fun driving it around...look he even grew a beard

Not the same car. The 1986 has a black interior with an '86 cloth pattern and the 1987 has a red interior with a one-year only '87 45-degree angled pattern. Also, the '86 is an automatic and the '87 is a 5-speed.

I can't comment on whether it's the same dude.

Willie

smokefan

ok it was an attempt at a bad joke. i know its not the same car.