Phx89Iroc

I am not able to keep the back window secured to the bottom latch. I can lift the window up after putting the top up. if i push the stick into that whole, it just stays loose. Is there some way to keep the top from being able to be lifted up, i must be doing something wrong? 1989 iroc convertable factory (not asc conversion).
thanks.

Iroctopless

Hi and welcome. I'm not sure what you mean by, "1989 iroc convertable factory (not asc conversion)."? There is no such thing as a Chevy "factory" convertible. Chevrolet/Pontiac never made a 3rd gen convertible themselves. When the convertible became an official option on our rides, that work was farmed out to ASC. They held the official contract to do the conversion.

Any other kind of 3rd gen convertible out there would not be an "official" one, but done privately by many of the independant companies out there (Autoform, for example). Even ASC conversions done before or outside of the Chevy/ASC contract would be considered not "official" but private.

If what you have on your '89 is an ASC conversion (the kind offered by Chevy) then check out this link for pics of what it should look like and how it works. Good luck.

https://www.thirdgen.org/forums/conv...body-help.html

yankeecarman

iTrader: (9)

What you might try is first securing the back window portion in the hole and then secure the front of the top of the roof to the front of the car. Really give it a little strength to secure in the hole. Also, there would probably be some sort of adjustment in the part that goes in the hole?

Iroctopless

Good point. I push down pretty hard to make sure it locks in. To protect the top, I put one hand on the roof above the pin and then push with my free hand over my other hand. That way I push on myself and not directly on the roof. I'm probably to dang fussy. You should notice it "snap" in place.

tavert91

iTrader: (1)

Does the Camaro have a slider release on the tonneau cover (used to release the pin from the latch under the hole)? My TA does and sometimes it does not return to the locking position after it is used to unlatch the rear portion of the top.

If you try to secure the top and this slider is not in the correct position, the top will not secure itself when you put the top up. Also, YANKEECARMAN is correct - be sure to secure the back portion of your top and then secure the front latches.

Phx89Iroc

what i mean is that in my vin, the 6th digit is a 3 which i thought mean that it was a gm factory convertible.

my car does have a sticker on the driver door jam that says it was modified by asc. I thought this was for the engine though, because it has 5.7 decals, and it says 5.7 under the hood (in paint marker though). of course anyone can put this stuff on (decals and such), but i really thought the asc sticker was for the engine upgrade, because my vin has a 3 on 6th digit.

i tried finding engine code under and behind the distributor, but no luck so far, its really hard to get to.

tavert91

iTrader: (1)

The 3 in the 6th digit of the VIN tells you it was a factory convertible (modified under contract to GM by ASC). The ASC decal on the door came on all conversions they did (not just GM contract vehicles) and provides a date they did them. Not certain about 1989, but in '91, a 350 (5.7L) engine was indicated by an 8 as the 8th digit of the VIN if that is any help.

Phx89Iroc

mine has a 3 in the 6th, and an f in the 8th which i read is the 190hp 305. However i read online that a vin will never have a 3 and and 8 no 350 was made at the factory for a convertable, only by asc. I just can't find the code on the block yet, so i still don't know what engine size i have :-( it does say tuned port injection on the top, and looks l ike the pics of over iroc engines, just can't find that dang code.

tavert91

iTrader: (1)

I think you need to separate the two things. The 3 in the 6th digit means Chevrolet meant the car to be built as a convertible. Most of the production was done on the line at the assembly plant and then the car was transported to ASC to have the convertible top fitted. When done, the car was then shipped from ASC to the ordering dealer.

The 8th digit showing an F indicates the car was originally built with a 5L TPI V8 - not a 5.7L. I do not think any 5.7L convertibles were built so if you determine that you have a 5.7L in the car, it was swapped in by a previous owner. Hopefully, they did a good job with the engine exchange and you have bought a fun car to work on and drive. If you are not showing it as "original", who cares - convertibles are fun and you should enjoy it. There may be others on this site that can give you some clues other than the block number that may help you identify what engine it is. Try a search.

RagRoc

The rear of the top wouldn't latch on my 89 when I got it and everything seemed to be connected / working properly. Some white lithium spray on the latch from the bottom of the tonneau solved the problem. Some things are just that easy.

Phx89Iroc

tavert91: it has a release i think, there is a little lever on the driver side above the rear speaker that is on the inside the black tonneau cover.

iroctopless and racroc: i am able to shut the top by pressing hard and it snaps now (i pushed it harder this time). I do notice that after driving it a bit, it pops back up though just enough so its not closed all the way.

lonsal

iTrader: (2)

Open the tonneau and pull on the lever on the drivers side. Look and see if the cable is pulling on a lever to rotate it. There should be a spring pin that is opened by that lever that rotates. That pin is supposed to snap into a groove on the pin that is attached to the center of the #5 bow to hold it in place against the tonneau cover. If the spring pin or lever that rotates is missing your pin on the #5 bow won't be captured. Also the shoulder on that groove on the pin could be worn causing the spring pin not to properly hold it in place. I have some spare pins that attach to the #5 bow if yours is worn.

Lon

Iroctopless

Some fine file or dremal work can bring a rounded worn grove back to square again.

dochypnosis

I just bought an '89 Iroc convertible. Had no idea it was not factory. I need some of the plastic parts made only for convertibles, like the rear tonneau cover, the covers where the front shoulder harnesses disappear, rear interior panels, etc. Is there a source for them, or am I out of luck?

Iroctopless

Yup. Yours wouldn't be "factory" since Chevrolet didn't actually build them on their own assembly line. But it is an "official" convertible as ASC was the one company that did the conversion under contract with Chevrolet.
Back in the day you could actually get all those parts through you local Chevrolet dealer. But, as with all cars as time goes by, those parts become unavailable. Even the regular parts are almost impossible any more. There are a few independants making a few pieces. Demand and what we're willing to pay will dictate if more parts become available.

jstanfi1

iTrader: (2)

I've had a lot of success finding convertible pieces in the Parts for Sale classifieds here on thirdgen.