The Supercar Registry

The Supercar Registry (https://www.yenko.net/forum/index.php)

- Baldwin-Motion Performance (https://www.yenko.net/forum/forumdisplay.php?f=89)

- - Sidepipes (https://www.yenko.net/forum/showthread.php?t=97006)

When Motion added sidepipes to the Camaro was the part of choice from the 67 Corvette?

I think they did probably up till 69. Then in 70 I recall seeing mostly the Hooker Header type. https://www.yenko.net/ubbthreads/imag...lins/dunno.gif

the 67 Corvette side pipe was used on some 70s and maybe later. The Hookers were used also. This was probably left as an option to the customer

Do they make a header/sidepipe combo for a 68 Camaro BB? I've never seen one.

-----So did O.K.Kustom out of Michigan. OK actually did headers and sidepipes for sale thru GM dealerships with GM part #s. I bought two or three sets for Corvettes that way. They were more performance oriented than the Hookers I think. I believe OK also made Camaro undercar headers for Camaro small-blocks with GM part #s on them. I dont know, however if they made Camaro header-sidepipes....Bill S

Thanks for all the info!

Motion Performance was also a Hooker Header dealer and had full listings of Hooker products (for all makes) in some of the MP catologs

...I wonder how much horsepower is lost running through the mid-year corvette side exhaust with the S-pipe used to connect the headers to the mufflers...

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...I wonder how much horsepower is lost running through the mid-year corvette side exhaust with the S-pipe used to connect the headers to the mufflers...

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Weren't the side exhaust also chambered which would decrease power as well? https://www.yenko.net/ubbthreads/imag...lins/dunno.gif

Oh yeah - but it is a small price to pay for sounding sh*t hot! https://www.yenko.net/ubbthreads/imag...s/headbang.gif

------I have a friend in south Fla. that has an original 67 L88. I think he told me one time that they did dyno pulls with underneath exhaust and sidepipes and there was a 60hp difference. I think that the difference would be more pronounced with an L88 than say a 327/350 but the fact is sidepipes (chambered exhaust) are very restrictive. He got the exhaust guys from northern Ohio (Stainless something or other) to make him three inch free flowing sidepipes. I think he has Hedman sidepipe headers now connecting everything and he says that the combo is the best he could come up with. You almost cant tell the difference in the big sidepipes by looking unless you know, and they fit under the covers.
------I bought a set of thier 2 1/2 inch free-flow sidepipes for our 66 390 and the car felt like it gained 30hp instantly over the original sidepipes. The stainless part is the frosting on the cake as I no longer have to scour the tips and the headpipes once a year to get rid of the surface rust. They are a bit louder and Jan doesnt like that part......Oh well !!!!!!.........Bill S

When Terry Pennington changed the exhaust on his wifes pure stock 69 L88 drag race Corvette from chambered side pipes to 2 1/2" mandrel bent pipes with Dynaflow mufflers, the car picked up a full 8 tenths https://www.yenko.net/ubbthreads/imag...emlins/eek.gif second in the quarter mile. It takes some serious horsepower to make that much difference.

http://www.allencorvetteexhaustsystems.com/ Maybe this is who you're talking about. They make a great product. I know it's a bit on the newer side, but I have their stainless chambered under-the-car exhaust on my '96 LT-4 Corvette and it sounds wild. My gas mileage is terrible actually because i just loving winging the motor up on the gear changes listening to those pipes!

Dog, thanks for the article!