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| Super Six Exhaust? https://www.slantsix.org/forum/viewtopic.php?t=28344 |
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| Author: | 74/6 [ Sat Apr 12, 2008 5:23 pm ] |
| Post subject: | Super Six Exhaust? |
Hi to all. This is my first post here so I hope it is in the right spot. I am going to install the super six stuff on my 1974 Duster. My question is which muffler would be a good one. I have read that I need to change the exhaust size to 2.25 in. Would bigger be better? What type, size, or brand would be the best muffler for this project? Thanks for now. Steve |
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| Author: | Eric W [ Sat Apr 12, 2008 8:52 pm ] |
| Post subject: | |
I like my oval Magnaflow alot. Not loud at crusing, lets you know its there when you get on it. |
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| Author: | Aggressive Ted [ Sat Apr 12, 2008 10:23 pm ] |
| Post subject: | |
I like the Thrush Welded muffler for $29.00. It is a chambered free flowing muffler. Not loud during cruise, until you get on it. |
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| Author: | ESP47 [ Sun Apr 13, 2008 2:22 am ] |
| Post subject: | |
The real super six exhaust is 2 1/4" to the muffler and then 1 7/8" out the tail pipe. From what i've read it sounds like 2 1/2" can give you a bit of a drone and doesn't affect mileage for the better or worse. I don't know if anyone has actually tested the mileage deal or if its just speculation. You might have to search the forums for that. |
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| Author: | Aggressive Ted [ Sun Apr 13, 2008 10:34 am ] |
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My truck and van use the 2.25" pipe for a more HP when hauling loads. On my Dart mileage improvement for me has been 1.5 miles per gallon over the stock pipe. I just don't need to keep my foot in it as much, and my vacuum at cruise is about 3 pounds higher. It also gives you allot quicker response when you need to pass or when you merge on the freeway.  Getting up to speed is improved greatly.
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