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Exhaust opinion #1828234
05/17/15 02:13 AM
05/17/15 02:13 AM
Joined: Mar 2005
Posts: 3,053
Central NC
gch Offline OP
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gch  Offline OP
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Central NC
I am going to throw this out there for a friendly debate.
I will be putting a mild 360 in my 87 D150 that will have long tube headers.I have all of the mufflers and pipe already to run either a 3" single exhaust or a dual 2.5 setup.Make an argument for one or the other if you like.
Motor is 9-1 .030 over 360 with a smallish(torque)cam,aluminum intake,4bbl in the 600-650 range likely,and some light porting on the heads.
Stock tranny/converter and will have no more than a 3.55 gear.

What would you run and why?

Re: Exhaust opinion [Re: gch] #1828244
05/17/15 02:51 AM
05/17/15 02:51 AM
Joined: Aug 2004
Posts: 3,309
Walnut Creek, CA
blown340 Offline
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I'd do whichever one packages easier in your application. Either will have sufficient flow capability for the sort of motor you are building.

-Jon


70 challenger convertible. 340/5 speed. blown, intercooled, efi, blah blah blah 71 valiant scamp 318/A833OD/AC/PS 00 dakota RC 4.7L 5 spd autoX'r. SRT10/T56 swap in process 73 W200 Power wagon, PTO winch, 4 spd
Re: Exhaust opinion [Re: blown340] #1828299
05/17/15 09:15 AM
05/17/15 09:15 AM
Joined: Jan 2007
Posts: 7,664
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ahy Offline
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I think flow capability will be similar between the 2 systems. Two into one may act like an H or X pipe with better scavenging and more torque... also quieter. If you prefer the traditional sound of dual exhaust on a V8 that favors keeping them separate.

Re: Exhaust opinion [Re: gch] #1828328
05/17/15 10:36 AM
05/17/15 10:36 AM
Joined: Nov 2003
Posts: 35,964
Lincoln Nebraska
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RapidRobert Offline
Circle Track
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Quote:
What would you run and why?
(1) 2&1/2 duals. (2) traditionally how it is done/looks/sounds better


live every 24 hour block of time like it's your last day on earth
Re: Exhaust opinion [Re: gch] #1828369
05/17/15 11:38 AM
05/17/15 11:38 AM
Joined: Mar 2005
Posts: 3,053
Central NC
gch Offline OP
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gch  Offline OP
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Posts: 3,053
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I am leaning towards the 3" single because I,
1)Like to be different

2)Truck is already single exhaust and will appear "stock"

3)I already have a 3" mandrel bent tailpipe and stainless long case 3" in/out muffler from a departed project.

Though the twin Magnaflow mufflers and resonators I have lying here are creaming what about me?!Maybe they will find their way to the 75 Newport.

Last edited by gch; 05/17/15 11:39 AM.






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