As I save for my Duals, I'm wondering....

[andymac0035]

you can buy a brand new cat-back dual system for less than $200.

Where? (seriously)

[Lincolnmania]

autozone, rock auto, etc
the stock tails are about 30 ea
the stock h pipe is about 80 bucks at autozone
stock replacement mufflers are about 40 ea
you will need two hangers also for the drivers side 10 bucks
clamps, gaskets, bolts, 20 bucks
so yea figure 250 for cat back parts.......if you want to road trip to pa, i'll put it on for 100 bucks

[hav24wheel]

I did my system for less than $150. It helps that i work at a wholesale warehouse and get parts for 10% over cost, and a buddy of mine has a exhaust bender.. I used stock tailpipes, some V-force mufflers, and just bent up two pipes from the motor to the mufflers.. i have had whole systems custom built for under $300. and that was for a 73 Imperial i had, so there was ALOT of pipe under it.. i wouldn't pay anything over $350 for a custom built system on anything.

[andymac0035]

autozone, rock auto, etc
the stock tails are about 30 ea
the stock h pipe is about 80 bucks at autozone
stock replacement mufflers are about 40 ea
you will need two hangers also for the drivers side 10 bucks
clamps, gaskets, bolts, 20 bucks
so yea figure 250 for cat back parts

Hmmmmm......I guess I was not looking very well. I did go to rockauto's site but the numbers seemed higher.

.......if you want to road trip to pa, i'll put it on for 100 bucks

Thanks, but I think I han handle installing the walker system.

If I were going to road-trip it to PA it would be after I had saved a bit more $$$.....and then I would be talking to you about an HO conversion. Now that would be worth the trip.

[87gtVIC]

If I were going to road-trip it to PA it would be after I had saved a bit more $$$.....and then I would be talking to you about an HO conversion. Now that would be worth the trip.

I bet it would be a fun ride back home!

[1987cp]

a grand is a ripoff... you could buy all the parts to use fox pipes for that much...

Try less.

Headers (nice ones): $250
Crossover pipe: $100 - $200 ($300 and up with cats)
Midpipes: $40 for both
Tailpipes: $80
Mufflers: $40 - $200 for typical suspects

What's currently under the Vic, from headers to the rear bumper, set me back around $500. Or call it about $800 if you include the price of the Lincoln HandyMIG I used to weld it up!

[andymac0035]

If you take into account that my 302 will most likely be stock for at least a year....

-Would I be just as well off to use glasspacks?

[1987cp]

Nothing wrong with glasspacks if you like the sound. The Walker master catalog lists several part numbers with angled inlets and outlets that may fit mostly OK in the stock location. You may be able to do turbo mufflers for cheaper, though.

Edit: Page 913 of the 2006 catalog. I don't see a 2.5" in/out, but I see 2"/2", 2.25"/2.25", 2.25"/2" (great for using 43281 midpipes with stock tailpipes), etc. Here are the part numbers for the ones I was thinking of when I made this post:

24041
24099
24081
24102
24042
24100
24049
24047
24030
24098
24095
24090
24103
24016
24120
24091
24104

[andymac0035]

I actually mentioned glasspacks in regards to the exhaust shop I usually go to (not the one that wants a grand). They do glass packs cheaper than reguler plain mufflers. (but still warranty them forever).

They put duals like that on a 78 marquis I had (400ci) but with no "H". (I didn't know how important that was back then). Anyway IIRC I liked the way it sounded.

Basically I'm asking:
Will I gain any more power with a perfomance muffler over a glasspack? ....(while my 302 is stock)

Or in-other-words.......Would it be worth it?

[1987cp]

ooooh, interesting.

I've heard *claims* that a glasspacks will "suck the power right out of the car" ... I want to say that was in 5.0 Mustang magazine. Logically, though, I would think they should perform similarly to any other performance muffler, provided the core tube is a reasonable diameter. If you think about it, my Dynomax Super Turbos are basically a glasspack in a turbo-style case, and lots of people like them. Borlas and Magnaflows are a similar idea except straight-through instead of turning twice. I'm thinking the performance concern with glasspacks must have come from experience with glasspacks that happened to use excessively small core tubes that imposed a restriction on the system?

Flowmaster of course has their claims that their unique (well, not quite as unique these days) baffle design will actually net a power improvement over a straight pipe ... I don't know under what conditions that might be true, though, and I generally can't tolerate the sound levels of most of their stuff anyway.

[andymac0035]

Not a fan of flowmaster either. My 93' GT stang had them, but they were on it when I bought it. I say it did sound decent most of the time though, but at certain rpm's it had a drone that got annoying. I cannot stand resonance....

I put a super 40 on a 4.0 sohc ranger (SI/DO)......I had to go back in less than a week for resonators because it literally hurt my ears to drive it....I should have started from scatch on that one......

I most recently had a dodge ram with the 4.7L V8. I had a single 3" small case magnaflow put on it (dumped under the bed) and boy did it sound great! Gave a few HP too. Always had a nice low rumble till you stomped it.....then it would roar. But it was never overbearing, you could hear the radio or a passenger's conversation. No resonance, no drone.

....And that is why I like magnaflows.

When I had the duals w/glasspacks put on the marquis I really didn't notice any power gain....but I also didn't have an H-pipe installed so maybe that was why.

[1987cp]

I could sort of see that. Low-RPM engine when the H pipe specifically boosts low-RPM performance, and all that sort of thing.

[packman]

I paid nearly $900 for the duals on my mom's CV. That was just for the parts; I did the install in the driveway. The good thing is that the '94 Impala catback that I got has enough piping to fully replace the exhaust when this one rots through.


Packman

[TomO]

Where? (seriously)

eBay.

Last time I checked, which was a few months ago, you could get a complete dual conversion kit including the H-pipe for less than $200. I believe the seller was a company called MAC Auto Parts or something like that.

I don't know for sure, but from the pictures, the kits look like they took some Walker replacement pipes and mufflers and assembled them into a kit.

[88Vic]

Flowmaster of course has their claims that their unique (well, not quite as unique these days) baffle design will actually net a power improvement over a straight pipe ... I don't know under what conditions that might be true, though, and I generally can't tolerate the sound levels of most of their stuff anyway.

They probably installed their mufflers on a car and recorded power gains because the straight pipes didn't flow at a igh enough velocity, most likey due to oversized piping so the backpressure actually increased the exhaust velocity to gain torque, the one instance where backpressure is a good thing. That's what happened on my Silverado, my 2.5" true duals with an H-pipe are too large for the motor, so I gained torque going from Flowtech Redhot glasspacks to Summit stainless single chamber mufflers.

On flow tests, Flowmaster has been proven to flow not much better than an OEM style muffler:
http://broaderperformance.com/muffler_flow_tests.htm
http://www.qsl.net/st0f/mufflers.htm