When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I know this has been covered over and over but I could not find an answer while doing a search. I have a 69 BB that I bought with the intention of fixing up and reselling. I am almost done and don't want to misrepresent the car when advertising. I have zero documentation for the car and the tank sticker is not present. Engine, trans, and rear are original and engine #'s match vin, so the next big item is the exhaust. All indications such as the insulation between frame and body, and lack of rear exhaust "holes" or any sign of 'em ever existing, could lead one to believe that this car was/is originally a side pipe car from the factory. It now has aftermarket side pipes so I am just looking for as much proof as I can, one way or another. A true #'s matching 427 plus a true side pipe car would sell better than just a #'s matching motor, I would think. It is not ALL original, as mentioned having after market exhaust and a few other items, so determining the exhaust question seems pretty important to me. Is there any other "proof" or reasonable indicators to ID a factory side pipe car ? Thanks in advance !!!
Can you send a picture of the Rear lower valance panel, where the exhaust pipes would come out if it were a under car exhaust.
If you look at the panel in the back does it have stright lines or does it have a semi circle bump out to fill in the cut outs for the under car exhaust.
2025 C8 Z06/7/E-Ray of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
2021 C8 of the Year Finalist Unmodified
2020 Corvette of the Year Finalist (performance mods)
2019 C1 of Year Winner (performance mods)
2017 Corvette of the Year Finalist
2016 C2 of Year
2015 C3 of Year Finalist
There are a few ways to tell if your car is a factory sidepipe car. If your car's serial number is 9320 or below it is not.
In addition to the rear exhaust panel and insulation mentioned, there should be no evidence of center exhaust hangers near the tranny. There should be a spacer there. The rear 1/4 panels should be trimmed for the exhaust outlet. The front side fender should be trimmed for side exhaust clearance. The front of the rear wheel well should be cut to expose the rear end of the frame rail.
I have a real 69 sidepipe car and these areas are the tell tale signs.
Randy- This is the Yellow BB car that you checked out for me in Kissimmee, Fl. Thanks again. The rear valence has part #3948133 on it so I'm thinking that it is an original part. No molded half circles or any "mud" work that would indicate filling in exhaust outlets.
Capvettes- Vin is 194379S726106 so is that before or after 9320? I know they didn't make 726106 of these so that is the confusion. The fiberglass trimming that you mention in front of the rear wheels, exposing the almost square end of the frame, is done on drivers side but not pass. side. Can't say that I see the reason for this. Just wondering.
Insulation is present on both sides. It appears to have a foil or shiny backing. Definitely old.
I will try to add a pic showing rear of car. Maybe someone can tell by the wrap around section of the quarter panel.
I forgot to mention one other thing I came across. Under doors where side pipes mount, there are 4-5 threaded "nuts" that is where my covers are bolted. These "nuts" are made into the rocker panel. Don't know if a rear mounted exhaust car would have these. (?)
Just read an old post from Alan and he states that the rear inner fender tab (by the rear wheel) was removed for another piece of insulation. Makes cense.
OK one last ? I tried to search a few different ways but to no avail. I am not being lazy. I know there were 4000 something factory side pipe cars, but what is the exact total? That would be for both conv. and t-top cars. Thanks.
ok one last ? I tried to search a few different ways but to no avail. I am not being lazy. I know there were 4000 something factory side pipe cars, but what is the exact total? That would be for both conv. And t-top cars. Thanks.
2025 C8 Z06/7/E-Ray of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
2021 C8 of the Year Finalist Unmodified
2020 Corvette of the Year Finalist (performance mods)
2019 C1 of Year Winner (performance mods)
2017 Corvette of the Year Finalist
2016 C2 of Year
2015 C3 of Year Finalist
Originally Posted by Panhead59
Randy- This is the Yellow BB car that you checked out for me in Kissimmee, Fl. Thanks again. The rear valence has part #3948133 on it so I'm thinking that it is an original part. No molded half circles or any "mud" work that would indicate filling in exhaust outlets.
Capvettes- Vin is 194379S726106 so is that before or after 9320? I know they didn't make 726106 of these so that is the confusion. The fiberglass trimming that you mention in front of the rear wheels, exposing the almost square end of the frame, is done on drivers side but not pass. side. Can't say that I see the reason for this. Just wondering.
Insulation is present on both sides. It appears to have a foil or shiny backing. Definitely old.
I will try to add a pic showing rear of car. Maybe someone can tell by the wrap around section of the quarter panel.
Your car would be the 26,106 Corvette produced that year so it's a fairly late car and within the VIN range that could be equipped with sidepipes. Mine is in the 33,000 range. Odd that only one side was trimmed ( it was cut for clearance) but everything else you mentioned seems as though it may have come with sidepipes. The insulation sounds correct to me.
Hi PH,
ANY chance the pipes and mufflers are the originals?
I BELIEVE this tab was original mufflers but isn't on the reproductions.
It's at the lower/rear of the muffler... maybe the rear of the shield was to mount to it, but that s-shaped bracket was designed and used instead?
Regards,
Alan
Hi Bull,
That's the location and tab I'm referring to.
I bought my pipes over the counter in March of 1971. I'm thinking they were the same (?) as the production line pipes had been but I'm not sure.
Is that a fiberglass shield? I'm looking for the 'seam' between the center and rear sections of the shield.
Regards,
Alan
Hi Bull,
That's the location and tab I'm referring to.
I bought my pipes over the counter in March of 1971. I'm thinking they were the same (?) as the production line pipes had been but I'm not sure.
Is that a fiberglass shield? I'm looking for the 'seam' between the center and rear sections of the shield.
Regards,
Alan
Yes, fiberglass....one of the first sets available back when Ecklers made them. glass is much stronger and thicker. I was a young guy with limited $$ back then. Chrome was way to expensive....maybe $400-500.
Also bought the GM rear valance for sidepipe cars. Then glassed the rear quarter panels. That part looks very stock.