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I would like to see some pictures of the underside of your car if you have an x-brace installed. Also, some side upclose pictures of ground clearance. Please let me know too if your car is lowered or not. I am flirting with the idea of making a "NASCAR stye" side exit exhaust on my car, but I am not sure how much room I will have to work with. I figure the thickness of the x-brace under the body might be a good comparison for how tall the pipes can be.
I would like to see some pictures of the underside of your car if you have an x-brace installed. Also, some side upclose pictures of ground clearance. Please let me know too if your car is lowered or not. I am flirting with the idea of making a "NASCAR stye" side exit exhaust on my car, but I am not sure how much room I will have to work with. I figure the thickness of the x-brace under the body might be a good comparison for how tall the pipes can be.
Here is a close-up photo of my rocker panel. You can see the x-brace below the rocker panel. The clearance is only a few inches and as such you will not have very much room for under-rocker pipes.
I think they would look pretty cool, but I suspect that you would dent them or possibly rip them off in short order due to low ground clearance.
The side exit may look cool, but that's about it. If you want to make good powerr and still have good sound control you should run the dual 3" pipes into a single 4.5" (use a Flowmaster Y-350450 to make the joint) oval pipe following the stock system. After you pass under the rear end, keep it single and run it into a Flowmaster 64520-14 race muffler. Make sure to have at least 10" of tailpipe on it too. For en engine that really needs dual 3" going with that race single system would be the best performance for any type of raod track. If it's a drag only car, you could go dual 3" all the way back and use a set of 5" thick race mufflers instead.
The side exit may look cool, but that's about it. If you want to make good powerr and still have good sound control you should run the dual 3" pipes into a single 4.5" (use a Flowmaster Y-350450 to make the joint) oval pipe following the stock system. After you pass under the rear end, keep it single and run it into a Flowmaster 64520-14 race muffler. Make sure to have at least 10" of tailpipe on it too. For en engine that really needs dual 3" going with that race single system would be the best performance for any type of raod track. If it's a drag only car, you could go dual 3" all the way back and use a set of 5" thick race mufflers instead.
PM me if you have questions.
Why would that be better? Right now I have two 3" pipes that exit under the diff. A shorter exhaust will help gain torque, one of the main reasons the Pratt and Miller C6R and Caddy race cars have the exhaust exit midway down the rocker panel. I cannot go through the frame like they do because of my race class restrictions, so I have to go under the car. I dont want the short exit pipes to dump under the car in the middle because that will pressurize the bottom of the car and create lift. Going out the side will help keep the exhaust short and get the gas out from under the car.
I thought about doing something like that as well. Some tracks have noise restrictions though. Plus TTA power to weight really isn't that much. It doesn't look like I could have more power or less weight. Making it easier to work on would be good though!
A common setup on the short oval cars is to bring a single up through the floor and out the pass door. 3 1/2 for street stocks (375-425 hp) 4 and 4 1/2 for late models (a bit more)
My Vette will have a single 3 1/2 out the pass side rear much like a 951.
Thanks for the pictures!! I was under the car today, and I would have to change the design of my current x-pipe to make this work the way I would like. I think I am going to put it on the back burner for now until I can redo the whole system maybe. Keep the pictures coming in case I decide to come back to it soon.
Originally Posted by Aardwolf
I thought about doing something like that as well. Some tracks have noise restrictions though. Plus TTA power to weight really isn't that much. It doesn't look like I could have more power or less weight. Making it easier to work on would be good though!
Yeah, most tracks measure db from the outside of the track so having both pipes go out the passenger side would make all the noise go to the inside of the track (at most tracks).
Originally Posted by Impala Balko
Looks like that side exit would take away your rear jack points
As it is now I jack up the whole side of the car from a spot in the middle. Having exhaust in the back will still allow me to jack up the side.
Originally Posted by Crepitus
A common setup on the short oval cars is to bring a single up through the floor and out the pass door. 3 1/2 for street stocks (375-425 hp) 4 and 4 1/2 for late models (a bit more)
My Vette will have a single 3 1/2 out the pass side rear much like a 951.
I have seen those setups, but my class rules do not allow me to alter the floor pan either. That makes my only option to go under the car.