Exhaust question

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Jun 4, 2015 | 05:33 PM

#31

qman

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What size was the pipe in the stock single exhaust?

Jun 4, 2015 | 06:10 PM

#32

HIO Silver

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Joined: Dec 2009

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From: NorCal

From the merge pipe back, a single 2.25-inch tube and one long, heavy muffler.

Jun 5, 2015 | 09:17 AM

#33

qman

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Right now my 360 has a dual 2" pipe system.

If I do my math right that is more output than came stock by over half. I'm figuring the area of a single 2.25" pipe to be roughly 4 square inches and each 2 inch pipe to be π (pi or 3.14) square inches for a total of 2π which is over 6.25 square inches.

Does that sound about right?

Jun 5, 2015 | 10:17 AM

#34

orich

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Joined: Aug 2003

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From: **** hole San Jose ca.

I been running late model GT Mustang 14" x 2.5" off set mufflers that, I got off C/List for like 50-60 bucks.
I can't remember now but they have a great sound with the Sanderson 427 block huggers headers with a cross over pipe and all the way out the back.

The sound from these GT Mustang are to please most guys liking, I sure with a nice throaty sound. Not the tinny hollow sound like flowmaster & some others give off.

Late model GT Mustang mufflers are high flow rated, but guys still change them out for an aftermarket ones.
Orich

Jun 5, 2015 | 10:34 AM

#35

qman

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I would love to put on the Sanderson headers and new exhaust but I've been bleeding money one house projects. Plus, this is a work truck only and I don't wann shell out $500 on a truck that's worth $1500 max.

Jun 5, 2015 | 10:48 AM

#36

itsabullitt

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Joined: May 2006

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From: Wichita, KS

Quote:

Originally Posted by qman

While you are correct and a dual 2" would give better flow than a single 2.25", there is still a lot left on the table with just the 2" exhaust tubing. With a mostly stock 360 and stock manifolds, I would recommend upgrading to 2.25" duals with some cheap turbo mufflers like has been discussed in your thread. If you start doing some engine upgrades in the future and throw a set of headers on it, then I would recommend stepping up to 2.5" duals and a good performance muffler. If you were happy with your truck's sound before and you just want to repair it, then have your local exhaust shop repair the damaged component and keep on truckin'. This would probably be the cheapest way out. If you are planning on redoing the exhaust anyway, why stick with the small, restrictive 2" tubing when the cost difference to upgrade to 2.25" is probably next to nothing?

Jun 5, 2015 | 12:55 PM

#37

qman

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I'm probably just gonna fix it for now being that I have no plans to do anything major. Who knows though. Maybe one day I stumble onto a 4bbl carb and manifold in the UPullandPay. If that were to happen then we might see some changes.

Jun 5, 2015 | 01:06 PM

#38

HIO Silver

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From: NorCal

Quote:

Originally Posted by itsabullitt

While you are correct and a dual 2" would give better flow than a single 2.25", there is still a lot left on the table with just the 2" exhaust tubing. With a mostly stock 360 and stock manifolds, I would recommend upgrading to 2.25" duals with some cheap turbo mufflers like has been discussed in your thread. If you start doing some engine upgrades in the future and throw a set of headers on it, then I would recommend stepping up to 2.5" duals and a good performance muffler. If you were happy with your truck's sound before and you just want to repair it, then have your local exhaust shop repair the damaged component and keep on truckin'. This would probably be the cheapest way out. If you are planning on redoing the exhaust anyway, why stick with the small, restrictive 2" tubing when the cost difference to upgrade to 2.25" is probably next to nothing?

Concur with the above statement. The marginal cost btwn 2-inch and 2.25-inch is very slim. Same with 2.25 to 2.5-inch. The big jump in cost is with 3-inch tubing.

If going with a single exhaust, use 2.25-inch head tubes merged into a single 2.5-inch exhaust system. Likewise, 2.5-inch head tubes can be merged into a single 3-inch exhaust system.

... running a true dual should be 2.5-inch tubing because it'll be ready for anything short of 500 HP... beyond that, then 3-inchers would be highly recommended.