Dougs headers D453 stainless, 360 mag, I remember reading that the pipes were mostly ok but exceptionally tight over the rear axle?? Any advice welcomed!
Any problems putting 3’ exhaust on 70 Dart ?
- Thread starter Brooks James
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Yeah it can be done. I had 3" on my 71. Local muffler shop did it.
Not necessary. You need some backpressure
All depends on how you route them. Here is a '76 Truck H-Pipe Dual Exhaust. Going over the rear end with the duals from here was no easy task. Factory plastic gas tank on the driver's side, so have to run the dual mufflers down the pass side.
Duals out the back with resonators at the rear bumper. Sounds nice and mellow.
Here is a '72 Duster 318, Stock Manifolds, 2 1/2" TTI X-Pipe Dual Exhaust that ended up with DynoMax Mufflers to kill the interior drone.
Getting around the Gas Tank and Rear Shocks is going to be the trick, then you are going to have to find out how you are going to hang them out the back.
Duals out the back with resonators at the rear bumper. Sounds nice and mellow.
Here is a '72 Duster 318, Stock Manifolds, 2 1/2" TTI X-Pipe Dual Exhaust that ended up with DynoMax Mufflers to kill the interior drone.
Getting around the Gas Tank and Rear Shocks is going to be the trick, then you are going to have to find out how you are going to hang them out the back.
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j par
Well-hung Member
I don't think back pressure is "needed" but rather wanted...
I have a costumer with a 65 GTO that inherited a 3" exhaust, x-pipe... I think a jegs kit... It sounds like total crap.. he's going to have it all changed out...
I have a costumer with a 65 GTO that inherited a 3" exhaust, x-pipe... I think a jegs kit... It sounds like total crap.. he's going to have it all changed out...
I didn't go out the back with mine. I cannot STAND duals straight out the back. I did mine at like a 45 degree angle dumped kinda in the front of the portion of the quarter behind the rear tire.
Similar to this.
DrEamer
I suffer from cars on the brain!
Unless you are running 500 plus horsepower, then a good 2 1/2 inch system will serve you just fine on a street car. Coincidentally, Engine Masters just did a show last week running 530 hp LS engine and the whole system with mufflers only killed 10 hp verses open headers. Granted a LS is a different animal, but it was an interesting, informative show. I'm willing to give up a few hp to not have to fight putting in the bigger pipe.
TT5.9mag
Two atmospheres are better than one
Not true. And never has been.
yellow rose
Overnight Sensation
Back pressure reduces the work that overlap provides. The last thing you want is back pressure. That is another myth that needs to die. And quick.
DrEamer is correct about not needing to go with 3" exhaust, unless your putting out over 500 h.p., 2 1/2" exhaust is plenty.
Both are sweet!!!!!!!!
Sounds (pun intended) like a mufflers issue
I’ll probably go with the 3’s for bragging rights. Mufflers are ultraflow’s no offset straight thru which I was told that there could be kind of quiet at cruise but will definitely sound off at WOT.
Anybody here agree/disagree with that ??
Anybody here agree/disagree with that ??
j par
Well-hung Member
Sounds pun intended like you're going to find out the hard way..
6" Diesel pipe, exit early straight up through the roof behind the driver. Good for 1000 hp on the street.
Well you don't dare say backpressure or all the racecar heads here will slam you against the wall.
dano
Evil Handy Man
How much power do you plan to run? Dual 3" seems over kill for a 360
Don't forget all that coal you can roll now.
Don't forget all that coal you can roll now.
j par
Well-hung Member
It's about bragging rights...
...
Yes it is !! Although I should be with nitrous at the 500 hp mark. Which I will use occasionally want it and chrome traction bars also for rights. Also six ft flame thrower with purple flamesIt's about bragging rights...
j par
Well-hung Member
Well I'm not wishing you bad luck or the chance to say I told you so but mufflers aren't the entire equation in how a car sounds...
j par
Well-hung Member
If you want bragging rides get 6 in all the way out the back LOL....
j par
Well-hung Member
Each to their own.... but I've never built a car for others to say "wow". My cars only have to please me, and if someone else likes it, fine. But you spend your money to please others, and they don't like it, you just waisted your money.
Unconventional
Well-Known Member
MomsDuster
Well-Known Member
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