TA and duals ?
TA and duals ? is there any way to run dual exhaust (looking at TSP) with an aftermarket torque arm not located on the tailshaft ? search is down and i have tried looking 
what are high hp guys running since Y-pipes dont flow and regularly mounted TA puts too much stress on tailshaft ?
what are high hp guys running since Y-pipes dont flow and regularly mounted TA puts too much stress on tailshaft ? 
1. your gonna need custom fabbed duals if you go with a non tranny mounted TA.
2. Plenty of people are making big power and still running a ypipe, so dont be swayed by talk
i've been through both. Dont get me wrong, I miss the hell out of my duals alot!! however, with my ypipe setup, its much quieter, a bit more stealthy and once i get a cutout, it will flow alot better!!
2. Plenty of people are making big power and still running a ypipe, so dont be swayed by talk
i've been through both. Dont get me wrong, I miss the hell out of my duals alot!! however, with my ypipe setup, its much quieter, a bit more stealthy and once i get a cutout, it will flow alot better!! 
TECH Addict
Joined: Jun 2005
Posts: 2,660
Likes: 14
From: England
Originally Posted by 5.7LoFuN
since Y-pipes dont flow
Y pipes flow great. The only restriction is NOT the Y, but the tubing diamter. Essentially with a Y the tubing has to deal with exhaust gases from 8 cylinders, where as with a dual setup it only has to deal with half the amount (4 cylinders).
What's your setup and how much power are you making?
Many race cars such as LG's Corvette uses a Y pipe, in fact it's there X pipe that they cut of one of the outlets to make a Y pipe. If it was negative to performance they wouldn't do it.
Remember a Y pipe scavenges in the same manor as a X pipe. A 3" Y should be fine on a bolt on to mild cam car without any negative affect on performance, provided the muffler also flows well enough.
Use 2.2cfm per 1hp as a guide.
Many aftermarket mufflers DO NOT flow well enough to handle the gas from all eight cylinders. But there are many that do, but you'll need to research them.
If you're making BIG power then a 4" Y may be needed, but these tend to cause as much problems as locating duals.
Powersticks from Classic Chambered Exhuasts flow very well. Even in 2.5" diamter.
well the reason i ask is cause im getting ready to procharge the car in a few months and im trying to figure out what im going to do exhaust wise, i wanted to get the TSP duals for sound, looks, ect... from what i heard it puts a lot of stress on the tailshaft to have the TA mounted there, but really how bad is it? relocating the torque arm everyone seems to say it causes more vibration, rattles, and other stuff i would just as soon avoid. My car sees the track maybe 6 times a year, but i do tend to drive it hard. should i go Y and relocate the TA or just forget it and get the duals and leave the TA where its at....im just trying to find out what worked best for people first time around so i can set it up right from the start.
TECH Addict
Joined: Jun 2005
Posts: 2,660
Likes: 14
From: England
Originally Posted by 5.7LoFuN
well the reason i ask is cause im getting ready to procharge the car in a few months and im trying to figure out what im going to do exhaust wise, i wanted to get the TSP duals for sound, looks, ect... from what i heard it puts a lot of stress on the tailshaft to have the TA mounted there, but really how bad is it? relocating the torque arm everyone seems to say it causes more vibration, rattles, and other stuff i would just as soon avoid. My car sees the track maybe 6 times a year, but i do tend to drive it hard. should i go Y and relocate the TA or just forget it and get the duals and leave the TA where its at....im just trying to find out what worked best for people first time around so i can set it up right from the start.
The trans is mounted on bushes to aborb movement, if the TA is mounted to the body then all the vibrstions will be transmitted directly to the car and amplified in much the same way an acoutsic guitar works.
But the benefit is because there isn't the movment more power will get deplyed, as Newton's laws of physics state, every action has an equal and opporsit reaction.
Personally duals do sound good, but unless you are looking at over 600rwhp I don't think you'll see all that much benefit to a GOOD Y setup. There maybe some, but honestly even if you lost 10-20rwhp, with over 600bhp at the engine does it really matter?
Being able to deploy that power is much more important. Personally I'd rather have a 440rwhp car that can use the power and make the best of it, to having a 600rwhp car which doesn't hook and is a pig to drive.
I might be wrong, but don't TSP duals dump before the axle so they won't really look much, except missing exhaust tips at the back of the car.
Alternative options might include running a H pipe. I assume your not interested in CATS, so a H pipe could be fabbed much nearer to the headers, this MAY still allow mounting of the TA.
Or simply say sod it and ditch the cross over pipr altogether. And run one pipe per bank, you could even have these exiting the car just behind the front wheels instead of out the back.
Personally I say do some reasearch but don't worry too much about it. For a street car you don't need every single pony. If it's 100% race car then maybe its a different matter.
yeah, i just liked the sound of duals and when i say looks.... i like the fact that they dump before the axel ... i hate the way exhaust tips look on the back of camaros, the only ones that looked good were the stock Z28 tips IMO. but i agree with what you were saying about the TA, i would much rather be able to get the power to the wheels, i wasnt really concerned with every single hp, more the look and sound... thats why i posted to see if there was a body mounted arm that would work with the duals, but dosnt look like it....looks like its a Y setup or a custom dual, thanks for the help
