1973 Camaro - Autocross / Street Car project

[XcYZ]

Originally Posted by silver63c10

Awesome, awesome project. The tie-in with your dad's car just makes everything that much better. Thanks for sharing, I'll definitely be watching for updates.

I agree, an awesome project, and the tie-in with your Dad's 72 makes it just that much cooler.

[73CPCAMARO]

The exhaust system is just about complete. The edelbrock headers go into an all stainless steel pipe with a custom built cross over. There are two Magnaflow straight thru mufflers and then go into one pipe. After they merge into one pipe, the exhaust then travels thru a large straight thru Borla muffler. The goal is to get good flow and keep the car fairly quiet. The exhaust will exit out the quarter panel, between the door and wheel opening. I will show photos of that later. The tunnel had to be expanded for the exhaust.

[73CPCAMARO]

These are photo of the installed fuel cell. We cut out part of the rusted out floor. A new floor section will be installed later.

[70rs]

I understand needing the clearance for the driveshaft and why the exhaust runs over it like that, but why choose the side exit and have to go through all of that in the first place? Or why the two into one and have to mess with going over the driveshaft when it could have stayed as two pipes and exit both sides of the car? I am not complaining, just curious about the thinking behind it.

[73CPCAMARO]

Originally Posted by 70rs

I understand needing the clearance for the driveshaft and why the exhaust runs over it like that, but why choose the side exit and have to go through all of that in the first place? Or why the two into one and have to mess with going over the driveshaft when it could have stayed as two pipes and exit both sides of the car? I am not complaining, just curious about the thinking behind it.

It all comes down to the lack of room. The car is going to be so low, it all had to stay up. Packaging wise, there is simply no room to get past the rear end. The passenger side would have been nice to exit, but it has the offset third link and the battery will be there for weight. The drivers side behind the seat is the only place to put it. The thought of going back to a single pipe is to save space by using one muffler and also it worked out great for sound. We installed this same set up for a test on our Corvette, and it was amazing how quiet we got it. We have some sites that are very restrictive on sound limits.

[WSSix]

I was wondering the same thing. It makes sense that you have packaging issues and are almost forced to route the exhaust like that. I figured with how much planning is going into this car for function that there was no way that much effort was done for looks.

I can't wait to see this thing on the ground. 2nd gens look so amazing sitting very low. Your car also being functional makes it all the more sweeter

[73CPCAMARO]

Originally Posted by WSSix

I was wondering the same thing. It makes sense that you have packaging issues and are almost forced to route the exhaust like that. I figured with how much planning is going into this car for function that there was no way that much effort was done for looks.

I can't wait to see this thing on the ground. 2nd gens look so amazing sitting very low. Your car also being functional makes it all the more sweeter

Function is first and try to make it look the best we could. Once all the paneling is installed, you won't see any of the exhaust anyway. The pipe exits just above the rocker on the quarter panel. When I get it closer to completion, I will post some photos.

[70rs]

Originally Posted by 73CPCAMARO

It all comes down to the lack of room. The car is going to be so low, it all had to stay up. Packaging wise, there is simply no room to get past the rear end. The passenger side would have been nice to exit, but it has the offset third link and the battery will be there for weight. The drivers side behind the seat is the only place to put it. The thought of going back to a single pipe is to save space by using one muffler and also it worked out great for sound. We installed this same set up for a test on our Corvette, and it was amazing how quiet we got it. We have some sites that are very restrictive on sound limits.

I figured you had a good reason. Thanks for taking the time to explain.

[deuce_454]

Originally Posted by 73CPCAMARO

It all comes down to the lack of room. The car is going to be so low, it all had to stay up. Packaging wise, there is simply no room to get past the rear end. The passenger side would have been nice to exit, but it has the offset third link and the battery will be there for weight. The drivers side behind the seat is the only place to put it. The thought of going back to a single pipe is to save space by using one muffler and also it worked out great for sound. We installed this same set up for a test on our Corvette, and it was amazing how quiet we got it. We have some sites that are very restrictive on sound limits.

if you wanted a passenger side exit, then why not just route a large single after the merge? it should weigh less as one large than two smaller.. and since you are comming into one muffler anyway ?!?

[73CPCAMARO]

Originally Posted by deuce_454

if you wanted a passenger side exit, then why not just route a large single after the merge? it should weigh less as one large than two smaller.. and since you are comming into one muffler anyway ?!?

Our goal is to get this car as quiet as possible. We tried with one muffler and it was not enough. The two smaller ones under the car were also not enough. We were able to obtain a unique sound with this set up and got it fairly quiet. It should also flow well. All three are straight thru design. With the two merges and three mufflers, hopefully it works out. Atl least all the weight is low and in the center. It may not be perfect, but it is different!