flowmasters

[heavy chevy c]

can't decide on super 40's or 44's for my big block any suggestions

[grs]

I put flow masters on my truck. They sound terrible. They are 40's. I should have put Magnaflow's on it.

[shopking72]

go with super 40s they sound good i think

[dmnall]

Well I have to ask what are you looking for Sound, performance or both?? Dont get me wrong Flowmasters sound good but they do not flow that much better then say a stock GM muffler. Magnaflow is a little quieter but they flow a lot better then Flowmasters... And if you want a nice rumble that will still get pretty loud *like a race car/truck* then get a pair of Dynomax Bullet 18 Inch Race Mufflers...

Cheers,
Charlie

[AusTx68]

Originally Posted by dmnall

Dont get me wrong Flowmasters sound good but they do not flow that much better then say a stock GM muffler.

Hey Charlie, you got factual flow numbers to back up that statement?

It seems Magnaflow vs Flowmaster has become like Chevy vs Ford. I honestly don't think you'll go wrong with either one. Just go with the one that sounds best and fits your driving style and tolerance.

I personally have tried both and currently have a new set of Super 44s waiting to get installed. I wanted the aggressive sound but my truck will not be an everyday driver.

[67ss&99ss]

super 40s for sure. They have a larger case which produces a much deeper sound. I have a pair of 3" dumped super 40s my 'Cuda and I get compliments all the time. Most people that hear it think I have a built 440 instead of a 340.

[67ss&99ss]

Originally Posted by dmnall

Dont get me wrong Flowmasters sound good but they do not flow that much better then say a stock GM muffler.

have you used a set of these? I have them on both of my camaros and they definitely flow alot more than a stock muffler.

[dmnall]

Originally Posted by AusTx68

Hey Charlie, you got factual flow numbers to back up that statement?

It seems Magnaflow vs Flowmaster has become like Chevy vs Ford. I honestly don't think you'll go wrong with either one. Just go with the one that sounds best and fits your driving style and tolerance.

I personally have tried both and currently have a new set of Super 44s waiting to get installed. I wanted the aggressive sound but my truck will not be an everyday driver.

I am looking up the Dyno Results, it was thread I read on camaroz28.com when I did the exhaust on the 02 Z28 I had. I did a lot of research and ended up doing the Dynomouth *basically like the slp loudmouth* except cutting the intermediate pipe and putting a Dynomax Bullet Race muffler. Which on the 4th gen ls1 based f-bodys, Flowmasters did not flow too much better then stock or even compared to the dyno results versus Magnaflow, and even the slp loudmouth 1 and 2 systems back then..

I could not find the post because it was taking too long but look down to 91interceptorZ on thirdgen.org

http://www.thirdgen.org/techboard/ex...owmasters.html

When I had my 05 Gto, I was planning on a Corsa Exhaust because one thing I did not like about the Bullet Race Mufflers is the drone.. I guess I am getting a little old because I want the inside of my cars and trucks to be quiet when it comes to a loud drone....

Originally Posted by 67ss&99ss

have you used a set of these? I have them on both of my camaros and they definitely flow alot more than a stock muffler.

I am not a huge fan of the flowmasters because everyone and their brothers has em. Plus even with stating the above posts, shows that they do not even flow that well compared to others. The Hooker Maxflow and Dynomax Bullets will flow very similar and noting this is with 2 inch - 2.5 inch pipes and would be even more with 3 inch pipes as well. When I get my 94 back up a Bullet 18 inch is going on it and when I build the exhaust I am placing dual Bullet 18 inch on the 68 since besides the drone around 2K hopefully it will not be too bad when the mufflers are under the bed of both trucks...

Cheers,
Charlie

[72freak]

Here are my thoughts........I have been trying to find the right sound combination for years. I have taken the advice of many people on what sounds good and what is too loud. I have put 3+ exhaust systems on diffrent trucks of the past 4 years. I have not been pleased with any of them! The only way to tell what you are going to get is listen to a truck and ride in it that has the exact same set up as yours....or buy used mufflers and install them and see what they sound like. Headers v/s manifolds, pipe size, muffler type, dump location and muffler placement will alll change the sound.

[67ss&99ss]

Originally Posted by dmnall

I am looking up the Dyno Results, it was thread I read on camaroz28.com when I did the exhaust on the 02 Z28 I had. I did a lot of research and ended up doing the Dynomouth *basically like the slp loudmouth* except cutting the intermediate pipe and putting a Dynomax Bullet Race muffler. Which on the 4th gen ls1 based f-bodys, Flowmasters did not flow too much better then stock or even compared to the dyno results versus Magnaflow, and even the slp loudmouth 1 and 2 systems back then..

Agreed, the 80 series cross flow muffler for an F-body is junk, but a normal single in/single out muffler does flow better.

[AusTx68]

Originally Posted by 67ss&99ss

Agreed, the 80 series cross flow muffler for an F-body is junk, but a normal single in/single out muffler does flow better.

I was thinking the same thing. The application on an f-body is way different. I had an LT1 equipped Z28 with Hooker Catback. Loved it! I never even considered flowmasters.

[FRENCHBLUE72]

I went with the 44s I do believe.... It sounds good either way thats for sure..

[71longbed-brew]

im shopping myself ... i can't decide either

[culp7]

go with the 40's!!!

[72armyswbtruck]

The only real difference the way that I understand between the 40's and the 44's are the size and outlet locations, (one is smaller and so it can be tucked better then the other) IIRC

[clay68c10]

I went with 70 series. Good sound, but that 1500 rpm drone is WAY less than the 40/44.

[68Stepbed]

I have the Super 40's on my truck. I love the way it sounds. If I ever had to redo the exhaust, I would go with the 50 series just because I want it a little more quiet. My buddy had a set of Super 44's on his son's 72 Nova. I really didn't care for how it sounded. It wasn't rumbly and throaty like the Super 40's. It might be different with a big block though. He should be getting his bigblock 67 Nova back soon, and it will have Super 44's on it. If you're not in a hurry, I'll try to get you a sound clip as soon as I can.

I put a Magnaflow on my 94 F*#d. I HATE IT!!! It drones worse than any Flowmasters I've ever had. I actually get headaches at times when driving it. I may replace it with a 70 series Flowmaster or stock muffler eventually.

[mbgmike]

Just for info. most of the design of these mufflers were from a Texan who died a while back. Clester Andrews. He designed the high performance mufflers years ago and these companies started with his design. He ran a muffler shop in League City Texas.

photo courtesy of Mike Ditty
Everyone around here used his mufflers before they became a household word.

[70cst]

On my 402BB I had Tri Y's, with 2 1/2" exhaust mated with 44's. At driving speeds I didn't like the drone so I switched to...factory manifolds, 2 1/2" exhaust with Spintech mufflers.
I will find out this spring if I made the correct decsion but BB's with these mufflers have the deep throaty BB sound but they are not suppose to have that drone issue that can get irratating.
Good thread...

[Tom Vogel]

[QUOTE=70cst;3839177][COLOR="Blue"]On my 402BB I had Tri Y's, with 2 1/2" exhaust mated with 44's. At driving speeds I didn't like the drone so I switched to...factory manifolds, 2 1/2" exhaust with Spintech mufflers.



WHich Spintech mufflers??? They also have several.. It gets confusing, doesnt it. Seems mufflers are like stereo speakers...

[70cst]

[quote=Tom Vogel;3839203]

Originally Posted by 70cst

[COLOR="Blue"]On my 402BB I had Tri Y's, with 2 1/2" exhaust mated with 44's. At driving speeds I didn't like the drone so I switched to...factory manifolds, 2 1/2" exhaust with Spintech mufflers.



WHich Spintech mufflers??? They also have several.. It gets confusing, doesnt it. Seems mufflers are like stereo speakers...

http://www.spintechmufflers.com/muff...e-/cat_26.html

I purchased the Sportsman Street Series....
They are sort of pricey but I wanted think outside the box...

[fdbdw]

obviously its personal preferance, Im running long tubes, with 2 1/2" pipes, supper 44s, dump before the rear tire, 3" tail pipes. I love it but some may not,

[QKENUF4U]

have a 40 on my 91 k1500 with NO DRONE.. sounds awesome.... had 40's on my 71 prostreet with NO DRONE/RESONENCE etc... gonna be whatever you like the sound of the best... had a mag on my 96 z71 and it wasnt anything special sound wise...

[Nova70]

I'm using an off brand and couldn't be happier. I'll jump under my truck and get the name. Decently mellow at idle and cruise but get on it and it lights up. I'll get a sound clip while I'm at it as well.

[jeffro788]

I think the super 44's and the 40's are similar but the supers are made to have less
cab resonance. I have full length headers going to 40 series flowmasters and dumped down and to the side. There is not as much cab vibration and they sound pretty good. I wish they were louder sometimes, but they do make noise. I liked the magnaflows but I hadn't heard any in my set up.
All others to me sound like glass packs, which I am not too fond of