Author Topic: new exhaust to go with my Doug's headers  (Read 5226 times)

Offline EMCD

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new exhaust to go with my Doug's headers
« on: June 18, 2011 - 10:35:10 PM »
so, i pulled the trigger on the new 360 with all the goodies and a set of doug's headers. what 2.5 inch stainless exhaust will work best for the least amount of $?




Offline Road_Runner

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Re: new exhaust to go with my Doug's headers
« Reply #1 on: June 18, 2011 - 11:13:56 PM »
Lot's of good opinions on the Dougs headers here, sounds like you did well there.  Good exhaust system for least $$, don't know if I can help you there too much.  Have heard some bad things about the Summit branded pipes here so don't think I'd go there to save money, heard nothing but good things about the Magnaflow & TTI systems but wouldn't call those inexpensive.  I'm planning on one of those two systems myself when I get to that point with either of my cars because I want to do it once with minimal hassles.  I'll be interested to see what others say here myself.

Later, Jim
1970 383 Roadrunner Tor Red
1973 318 Barracuda Mist Green
2014 Mustang GT/CS Convertible All Black

Offline mojavered

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Re: new exhaust to go with my Doug's headers
« Reply #2 on: June 19, 2011 - 12:39:37 AM »
Call a few of the muff shops in your area.  I do not remember the exact dollar value, but I was able to get 3" mandrell bent stainless with lifetime for less than 500 bucks.
Jason

Offline EMCD

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Re: new exhaust to go with my Doug's headers
« Reply #3 on: June 19, 2011 - 03:56:00 PM »
cool. heard anything about the "pypes" products?

Offline Road_Runner

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Re: new exhaust to go with my Doug's headers
« Reply #4 on: June 19, 2011 - 07:17:57 PM »
cool. heard anything about the "pypes" products?

Heard of them, but nothing else.  Hopefully someone else will chime in with some info.  You could always Google them and see if there's any threads on other sites about them.

Later, Jim
1970 383 Roadrunner Tor Red
1973 318 Barracuda Mist Green
2014 Mustang GT/CS Convertible All Black

Offline EMCD

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Re: new exhaust to go with my Doug's headers
« Reply #5 on: June 19, 2011 - 07:28:25 PM »
cool. with a well built 360 producing about 450hp, will 2.5" be enough exhaust?

Offline Road_Runner

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Re: new exhaust to go with my Doug's headers
« Reply #6 on: June 19, 2011 - 07:38:48 PM »
cool. with a well built 360 producing about 450hp, will 2.5" be enough exhaust?

You would probably gain at least a little peak HP with a 3" exhaust at that level, but personally I think if you're going with a mandrel bent tubes, x-pipe, low restriction exhaust system the 2.5" should still work great on the street and probably give you a little more torque where you'll actually be running the engine in the low & mid rpm ranges at the expense of a HP or two in the extreme top end.   That's my  :2cents:

Later, Jim
1970 383 Roadrunner Tor Red
1973 318 Barracuda Mist Green
2014 Mustang GT/CS Convertible All Black

Offline EMCD

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Re: new exhaust to go with my Doug's headers
« Reply #7 on: June 20, 2011 - 10:16:12 AM »
cool man, thanks for the advice.

Offline ragtopdodge

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Re: new exhaust to go with my Doug's headers
« Reply #8 on: June 20, 2011 - 03:07:01 PM »
I think magnaflow makes SS exhaust systems for e-bodies???

http://www.planetmagnaflow.com/shop/magnaflow-15852-244.html

$$$ but will last forever.  don't know about fittment.

'70 318-auto Chally 'vert
'71 383-auto 'Cuda 'vert (sold)
06 300c SRT8
04 2500 QCLB 4x4 HO

Offline EMCD

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Re: new exhaust to go with my Doug's headers
« Reply #9 on: June 20, 2011 - 06:15:48 PM »
holy crap! that's pricey!

Offline Strawdawg

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Re: new exhaust to go with my Doug's headers
« Reply #10 on: June 20, 2011 - 08:56:23 PM »
I think magnaflow makes SS exhaust systems for e-bodies???

http://www.planetmagnaflow.com/shop/magnaflow-15852-244.html

$$$ but will last forever.  don't know about fittment.
 


on ebay from some sellers much cheaper

Offline femtnmax

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Re: new exhaust to go with my Doug's headers
« Reply #11 on: June 20, 2011 - 08:58:05 PM »
I made my own totaly mandrel bent system using Summit 3 inch X-pipe.  Mandrel bent 3 inch from Doug's headers thru X-pipe, then reduced to 2 1/2 inch aft thru Dynomax super turbo muffs under rear seat, then on to Magnaflow round straight thru muffs along side fuel tank.  No droning, you can talk with your partner anytime until you floor it.   
Phil

Offline mojavered

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Re: new exhaust to go with my Doug's headers
« Reply #12 on: June 20, 2011 - 09:15:54 PM »
I made my own totaly mandrel bent system using Summit 3 inch X-pipe.  Mandrel bent 3 inch from Doug's headers thru X-pipe, then reduced to 2 1/2 inch aft thru Dynomax super turbo muffs under rear seat, then on to Magnaflow round straight thru muffs along side fuel tank.  No droning, you can talk with your partner anytime until you floor it.
You have 3" -> Muffler -> 2-1/2" -> muffler?
Jason

Offline Barracudadan

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Re: new exhaust to go with my Doug's headers
« Reply #13 on: June 20, 2011 - 10:59:57 PM »
I went with a Pypes system. I like it good value for the price I went with the under the valence type. Only thing I wasnt crazy about was the pipes dont line up with the notches on the valence. I had to have a pair of custom pipes bent to connect to the headers,but I think that is the case with any kit you buy. If you get the tips that go through the valence the Pypes logo is etched in on them some folks don`t care for the logo myself included. It might buff out I don`t know for sure though.

Offline femtnmax

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Re: new exhaust to go with my Doug's headers
« Reply #14 on: June 21, 2011 - 10:16:12 AM »
You have 3" -> Muffler -> 2-1/2" -> muffler?
3 inch reduces to 2 1/2 inch just after the X-pipe, then 2 1/2  continues thru two mufflers to tailpipe.   
Phil