Good post 25. As far as interior noise goes, it is definetly not as loud at cruising speeds as people make it to be imo. I have no problem talking to people or listening to the radio when I am just crusing around.

But If I take it above 3k, then It gets loud inside

 

yah thats how my flowmaster is. At crusing speeds its not as loud as i would want it to be. i can harly even hear it inside lol.

 

I have a V-force (flowmaster copy) and at cruising speeds the wind noise is more than the exhaust.

 

The unattractive noise we refer to here is a DRONE people!!!!! Not an all-encompassing assualt on your ears that leaves you feeling violated!!!!

Drone.... Just a drone... And as mentioned above many, many times... it really isn't a big deal at all. Just not something you would purposely design into the system.

And yes, SOME Hooker systems do it too. Been there, heard that. SOME Flowmaster systems also DO NOT do it......

 

The drone from my 80 series muffler is too loud on long drives. I like the sound of the muffler, but over time I find myself turning up the radio just to drown out the noise from the muffler.

Now, when I'm romping on it, I turn the radio off, simply because I love to hear the engine roar.

Course, my neighboors aren't happy that its so loud when I leave for school at 6:30am in the morning.

 

I have a spintech muffler and love it...will probably never own another brand...why? Because it works for me. Like said already, for most of us, all these brands will flow pretty much the same, and even if they don't flow the same, not many people will notice a difference. Lets just make life easy on everyone and just say to buy what you think sounds best! There are too many of these muffler fights going on....just get what sounds good to you and be done with it.

 

If you want a REALLY nice MEGA-FLOWING exhaust system that sounds good on the outside, but also produces NO INTERIOR noise, then get a Corsa cat-back for a 4thgen and have a shop put it on your 3rdgen!

Look to spend some bucks though! The Corsa cat-backs are a little pricey~!

 

I chopped out my 30-Series Blowmaster (part of the Force II) and replaced it with a straight through Dynomax UltraFlo welded muffler. The blowmaster sounded excellent ... but the flow rating (cfm) just wasn't there for a high horsepower setup. It was a custom installation because the Muffler I picked is not made for our cars. However, it was -almost- a bolt in. The cool thing about this muffler is that it is quieter than the blowmaster but flows A LOT more. This particular muffler I am talking about from Dynomax is rated at 1500cfm. It's a single 3" in, single 3" out. Look in one side and see out the other. I just went 11.6's @ 117mph with this muffler. Who said 3" exhausts aren't enough for a high hp motor? hehe.

Tim

 

I can't believe you did that, your car sounded SO good with the Flowmaster. I woulda liked to see times with the Flowmaster then with the new muffler on your current setup.

 

I'd like to hear a sound clip of that dynomax. Never heard one. I'm sure it's a lot quieter than the flowmaster, but I'm sure it flows better like you say since it is straight through. And if you're turning 11.5s than you must have a pretty built motor.

 

I should have some sound clips withing the week. Built motor? Naaaa. It's just a wimpy stock shortblock. The motor has never been pulled and tranny has never been rebuilt.

Tim

 

Hell, you're turning those kind of times with a mostly stock set-up? Wow, what's your secret? lol

 

The only thing "stock" about Tim's setup is the block, crank, rods, and pistons. Otherwise everythings aftermarket.

Whats impressive is he hasn't beamed a piston to the moon yet.

-- Joe

 

Beam me up scotty. Beam me up.

I still have stock bearings, stock oil pump, stock oil pump driveshaft, stock oil pan, stock oil pan gasket, stock distributor .... hmmm ... running out of things here

Irocster - the full report on my run is HERE

Tim

 

Stock or not, those are impressive times. And in his case, NOT!

 

I've looked at your setup 100 times and I dunno why I'm not going as fast as you. I think its my sportsman-II heads, and your AFR 190s.


-- Joe

 

Joe,

Our setups are actually night and day different ...

1) Stock Sportsman IIs vs. Ported AFRs
2) Tame SLP cam vs. my Lethal EFI Performance Cam
3) TPI intake vs. MiniRam
4) Hedman 1-5/8" shorties vs. Hooker 1-3/4" Long Tubes

You have a supercharger but, IMHO, you are going to have to run a fair amount of boost to make up for my power.

Tim

 

... but, the shortblock is stock. It's never been out of the car, never rebuilt.

Tim

 

Hey Tim,

Yep!

The cam was chosen because of the boost. I'm not sure how much cam changes would make. The Heads for sure are a big difference. I'm flowing like 230/170 cfm.

The TPI I'm not sure about.. You'd think with the boost it wouldn't matter what intake i'm running.. The Miniram surely is better for N/A application.

If I tear this motor down, i'll prolly go with alum heads, and a victor jr efi intake with a carb turndown. Could then run a super chiller to cool stuff down.. wooha!

-- Joe

 

Even though your shortblock is stock, which is impressive, The rest is definately not, and im sure it doesn't appear stock either... But good running, you plan on a rebuild any time soon? or is it still running good? When you rebuild you will be upgrading then, won't you?

 

TRAX, what's the original mileage on your car??

 

I don't think you had a 30....

Force IIs come with a 40 series 3 chamber muffler that doesn't (according to Flowmaster) flow as well as the 2 chamber 30 series. Plus the 30 series was made specifically for big power applications (NMCA Fastest Streetcar Series).

Unless of course you pieced together your system and put a 30 series on it ....

 

According to flowmaster the thirdgen Force II is the 30 series. Look here ...

PN 17150:
http://www.flowmastermufflers.com/cg...ter/17150.html

The muffler in this setup is the 53033. Crossreferencing 53033 on flowmaster's site yields ...
http://www.flowmastermufflers.com/cg...ter/53033.html

According to flowmaster the 17150 kit comes with a 30 series.

Tim

 

I think I am up to around 34,000 now

Tim

 

I never said I was stock. I said 'stock shortblock'. I'm definitely not stock ... no way you can run those times stock - lol. You can't even run those times stock and on nitrous or a supercharger. In any case I have no rebuild planned at this time and I currently don't need one. The leakdown on the cylinders comes out pretty darn good. When it is time to replace the motor I am probably going with a Motown 427ci shortblock.

Tim

 

sweet ***!

 

Well I'll be d*mned.... I was thinking they had 40s on those systems.... My mistake.

Anyways, where did you get flow data for the 3" Flow versus the Dynomax?

 

34,000 miles?!?!

TRAX's car was plenty fast with the Flowmaster!!

 

Honestly Matt - I have none. I looked at the internal design of the 30-Series (which is an excellent muffler) and then it was evident to me that I needed something else. My car is about the combination of parts. I need an exhaust that has great velocity while still flowing a lot. The fact that I am running a 3" gives me my velocity ... but I needed a muffler that would help create this velocity instead of working against it. The Flowmaster has internal baffles (walls) which hurt velocity. Basically, exhaust enters the flowmaster and hits walls. This creates turbulence ... a lot. A straight through muffler won't have this kind of turbulence ... and compliments the 3" by not hurting the velocity. Add to that the fact that the muffler I chose is rated at 1500cfm (common sense dictates that the 53033 Flowmaster can't touch that), and now I have both my velocity and my raw flow.

Tim

 

Word. I went 12.2@112 with 1-5/8" shorty headers, flowmaster muffler, stock AFR190s, small 218/224 cam, and a weak 2800 stall. That setup would have probably gone 12.0's but I somehow always get a bug up my butt and want to try something new. I didn't spend enough time with that setup. Well - I can tell ya this - I WILL be spending significant time with my current setup. No more bugs up my butt to change things. I think I am finally happy with the configuration of my 350.

Tim

 

Makes sense Tim... I guess I never questioned the flow capabilities of the 30 series given the kind of setups it is designed for. That and I personally know of one setup in particular that put 500 RWHP down out of an NA 392 LT1 through a 4" 30 series... It made 606 at the crank and a little over 500 at the wheels (T56, 12 bolt) so it seems the exhaust in the car isn't holding it back any.

 

Dynomax UltraFlo Welded straight through 3" in/out on my setup.
http://celligent.com/tim/iroc/movies/dynomax_idle.wmv

The Flowmaster 53033 is a deeper sounding muffler with less midrange. It is a rather loud muffler.

The Dynomax has more midrange with less bass and is more 'hollow'. It is quieter which is surprising given the fact that is straight through (look in one end and see out the other).

IMHO, the flowmaster 53033 is an excellent sounding muffler. At idle is does sound much better with the flowmaster. However, the dynomax is much more comfortable at cruise because it doesn't have that characteristic flowmaster 2000-2500rpm drone.

With that said, I've already had people who have commented on how much they like my new sound. I've been told that it is much more akin to a race type setup since most race cars use straight through designs whereas flowmaster is specifically creating mufflers to produce a particular sound. They particular dynomax I chose was created for pure flow.

Pluses and minuses to both setups. I just know that if I am running a 3" exhaust that I need the highest flowing muffler that I can get my hands on. Bang - for me that's the dynomax ultraflo welded.

Tim

 

I really wanna hear/compare the new Dynomax sound to the Flowmaster. Whenever I showed someone that video with your car at idle and the 30 Series, they were like "Wow that sounds good!" And then they were even more surprised when I said that it was the F2 system and NOT the AT, which is the loud system!

 

That sounds pretty damn good. Do you have any sounds of the old flowmaster to compare?

 

Guys,

I modified my Hooker Long Tube sticky post to include links to BOTH videos ... the 53033 FM 30-Series, and the Dynomax UltraFlo Welded straight through.

It's listed under "Idle sound with full exhaust connected (yummy)."

https://www.thirdgen.org/techbb2/sho...1&pagenumber=1

Tim

 

It's pretty good, but that Flowmaster was great. I wish I coulda heard you rev in the other 2 videos.

 

wow, this thread went from muffler talk to Trax is G()D!! hehehe. Trax, your car is very sweet! I still have some shots of it from TGN.

 

I agree with you. However, I've also heard the opposite. Some like the new muffler better because it sounds more like a true racecar ... and not like a 'fabricated' sound which is what flowmaster is doing.

Tim

 

Traxion -

Do you still think my car cant pull at least an 11.9 when your above setup went 12.2's ? Keep in mind that my heads flow better than stock AFR 190's, I have a bigger cam than the above posted, I have more compression, 5 more cubes (big deal ) , I have long-tube headers, and a tranny that loses less to the ground than the power robbing 700r4.

Just a thought!

Also, you have mail.

Mike (1bad91Z)

 

I went 12.2's with the MiniRam ... not a LTR setup. I went 12.5's with a LTR setup. Also - you will note when you read my previous posts to you that I think 11's are possible ... just not probable. I've personally witnessed LTR cars in the 11's with 350ci. My main beef was with 350rwhp on a 350 LTR setup with a normal weight (and not stripped) car.

Again - PLEASE just put the numbers down. $75 is easy enough to come by given 2 months or so. Or, just go to the track and pay $20.

Checking e-mail now ...

Tim

 

I have SLP runners, SLP headers, flowmaster and a Edelbrock base and thats it for motor mods. The 105K old motor has never had the valve covers off and still has the stock 48mm TB on it.

11.614 @ 115.44 with a NOS 5151 plate kit.

I now have the stock base and runners on it (Kevin91Z has the runners on his car.) and will try more nitrous to see if it will run a 11.50 with headers and nitrous only.

Jerry

 

At first I was cornfused by your comment ... then I looked at your signature ... "210hp of nitrous" ... holy crap dude. And you are going to put more on it? Wowzas.

Tim

 

I will try 250 and if that lives than 300 will be next. For backup my new motor ( 6.7L Rodeck ) is on the stand and allmost ready for action.

Jerry

 

Has anyone seen or heard flowmaster's new Super 40's. They just came out with em a little while ago and are supposed to flow quite abit more than the original 40's. Flowmaster has some sound clips(they are about 1.3 megs or so) They sound quite abit deeper and less raspy than the originals http://www.flowmastermufflers.com/cg...r/super40.html