what do you think about running a set of the hooker 2055 headers or the mac headers(both very similar and will probably go with mac) to a dynomax i-pipe and oa-pipe (over axle) to a moroso spiral muffler and a single hideway tail pipe. all in three inch. i am not really looking for looks or a particular sound, i want the most performance out of a single 3" system that i can find. and i want it for farely cheap. any and all suggestions, comments, flames, whatever appreciated.

well, i am probably going to do it, whether you guys put any input in or not, that's fine with me.

It's a good idea. The highest flowing 3" that runs through a muffler will come from a system that is pieced together. That's what I did. I found a high flowing dynomax straight through muffler (ultraflow welded) and fabbed it into my flowmaster I-pipe and OA-pipe. Dynomax claims that the particular muffler I ordered will support over 600hp and that it flows 1500cfm. I ran 11.6's@117mph through this setup. Hooker long tubes to a single 3" system using a Dynomax UltraFlow straight through muffler. I have posted about this several times and I even have some sound clips out there. Check my hooker long tube sticky post or run a search on my username in this forum.

Tim

Unless you want to blow the $$ on a Mufflex 4" -
I gained 3 tenths over shortie SLP's to a 3" Cutout and a flowmaster.
By running the 4" through flowmaster closed.
But thats also on a 400 CI, But I could see it being equally impressive on a Higher RPM 350.

Don't think that I am giving credit all to the 4" system - The long tubes and Y pipe played a large role in that.
But system closed over system closed I gained over 4 - 1/10's.

Sounds like a good setup. TRAXION's car is a beast. Looks bone stock on the outside...besides the wide band O2 sensor wires coming down the side of the car. He started it at thirdgen nationals and about shat all over myself. Its nice.

yeah, i've seen your videos and stuff traxion. i really like the setup your running, however, the hooker longtubes are going to be alittle too much for me and not provide nearly the ground clearance i need. i would like to run low 12's/possibly high 11's with this setup.

I run the same hookers and Mufflex Y pipe, You would be very surprised at the ground clearance, especially if you do a little grinding on the x-member you can really tuck it up nicely.
I ran skinnies most of the year with a 25" tall tire and have never scarped yet. I have a pretty large 4-5" drop coming off of my garage pad to driveway which was a concern when I bought the system - No problem at all.

Well the only thing I can say is I've never head a spiral tech muffler, I have a bullet on mine and split out to duals. Sounds like a nice setup, just dont know how it would sound!

I have a friend running 11's with SLP shorty headers. Furthermore, I went 12.2's with SLP 1-5/8" headers . I guess what I was trying to emphasize is that you CAN go fast with a single 3" exhaust and that your best bet is to pick the highest flowing muffler you can. I chose dynomax because they actually publish their flow ratings. Not many companies do that. The low line of Dynomax muffler aren't that good. However, once you step up to the ultraflo series they are pretty darn good ... better than flowmaster IMHO. I have pics of my straight through 3" muffler at ...

http://www.celligent.com/tim/iroc/exhaust/muffler/

Tim

I agree you can deffinetely run 11's w/SLP's, I ran 11.4 @ 120
through mine and with cut out after the Y pipe.
As trax said flowmasters do not flow great - sound real nice though
But does happen to work very well with my 4"

On my camaro I ran a single bullet for a while after longtobes and through a homemade 3" Y pipe that flows great and sounded really good to - kinda nascar like until I put the blower on.
That thing increases sound by double.

Another alternative would be to run a Borla with the Straight through on one side - those flow great and sound real nice to.
I actually one time was going to make the same setup just with a flowmaster in stead.

Hope some of that can help you in some way.

Hey Tim, I was looking at your pics and it confused me. looking throught the muffler makes it look like its a straight shot through the muffler(red arrow). But when you look at the overall pic you can tell its a offset/center muffler, not an offset/offset like the picture 1st picture looks...

Am I just seeing it wrong?

It's an optical illusion. It's definitely an off-center muffler. This pic sorta shows it best...
http://www.celligent.com/tim/iroc/ex...r/DCP_1908.JPG

I understand what you are saying though. It makes it look like it's not offset. But, it definitely is offset. The optical illusion is the fact that you think the rear part of the muffler is centered in the picture just like the front section. But, that's just not true. The front section of the muffler toward the camera is centered and then I cocked the rear in order to show the straight through design. If you look through those pics again you can see where the front pipe is straight but then the rear part (After the holes) is cocked.

Tim

Trax - isn't that muffler really close to a Spintech in design?

the spiral sounds great. an i know that it flows well cause Rick Moroso is running those mufflers on both of his 8 sec corvettes.

Not even close. My dynomax is straight through. Spintech uses a spiral baffle on the inside.

Tim

Is the dynomax design superior in power over the spintech design?

What is the best single in - single out 3.5 inch muffler out there?

Straight through mufflers will always allow more potential power than a baffled muffler. The baffled mufflers hurt velocity. The best single 3.5" muffler will be a straight through design like a Borla, a Magnaflow, Dynomax, etc. The next question then becomes how LONG the muffler should be. This is where your sound deadening will ultimately be determined. The shorter the muffler the more flow potential ... but the louder the exhaust note would be. I picked the longest straight through muffler that dynomax offered that still has a horsepower rating that is in excess of what my combo puts out. In actuality ... my muffler is pretty long.

Tim

Obviously I would get the Ultra flo welded,dynomax UF welded

but, does Dynomax make a shorter 3.5 inch straight through muffler?

dynomax bullet

If you are that concerned about flow, why not just get a cutout, which will obviously outflow any muffler on the market? To me, I think a muffler should be chosen for it's sound qualities, not flow, after all a muffler is purely there to muffle the sound. If you are concerned with flow, either get a cutout or run open headers.

Becuase I wont be running open header nor running a cut-out.

Besides, Mccord doesnt make a 3.5 inch power plate to my knoledge. If I put a cutout on my car, it would have to be a 3.5 inch cut-out and I would only run one if I could get a power plate to fit it.

They make 3.5 inch electric cutouts. Get one from QTP.

Check out the dynatech websight. they make some 3.5" straight
thru race mufflers and a interesting little cone muffler that fits inside of the collector/tailpipe. I have purchased both of these to try together in my system. SLP 1-3/4 headers to a Mufflex style
2-1/2 y-pipe into a flowmaster 2-1/2 to 3-1/5 Y collector. then into a 3-1/2 inch I-pipe to a dynatech 3-1/2 ID X 6" race muffler and
acone muffler inserted into the tail pipe just before the turn down that dumps before the rear axle. Well thats the game plan.
It will be installed Friday. If its way to loud, ill try a longer muffler and experiment with the cone setup.

Who is QTP? Ya gotta link?

http://www.quicktimeperformance.com/qtec_main.htm

They're also coming out with a 4 inch version very soon.

you know, some sanctioning bodies don't allow cutouts, hence the need for the research for the full exhaust. (thinks about nsca classes)

That's true. Is that what you are gunning for?

yep