Pretty sure I want Flowmasters but....

[JohnRXL]

Been doing a fair bit of reading and you tube vids for sound bits on different flowmaster mufflers but still can't decide which flowmasters I like the best ,
Super 44 - Two Chamber Mufflers ,
Original 40 Series - Two Chamber Mufflers or
Super 40 - Two Chamber Mufflers
which one are most here running?

My set up is shorty headers, true duals with x-pipe, two cats, 2.5" to mid section down to 2.25" to the tailpipes.
Approx. 10:1 compression
The rest is in my sig.

Looking for aggressive sound without being to raspy.

[SierraDan]

The deepest of those would be the Super 40, it's got a 5" diameter case, the other's are 4" and wider means deeper, just like bigger piping.

[jbt56]

Yep, the Super 40 will have the most bass to the tone. The Super 44 and the Original 40 will have a slightly more aggressive tone, and would be slightly louder, too. As far as the sound differences, though, it's like looking at 3 fire engines, and deciding which is more red, or less red than the others. Side note: Both of the Super mufflers outperform the Original by about 20-25%.
Running duals, make sure you run an H pipe (or an X, for a quieter, smoother sound) for better sound quality and performance.

[bigk20chevy]

i got the original 40's on my Blazer, My Truck, and Camaro and love all of them i wouldnt change it for the world

[04SilveradoMykk]

My vote is Super 40, it's been my favorite so far.

Here is my flowmaster sounds video on my truck, yes it's a NBS... but it's a carbed 350ci

[slimshock191]

i have long tubes true duals and original 40s on my 95 k1500 all 2 1/2 in piping sounds amazin but i also have a 5 speed trans so mine might sound a lil nastier lol

[Mr. Chevy]

I just watched your video yesterday, that's pretty cool your a member here too, I didn't know that. Anyways, I like your truck with the super 40s, but then when you mentioned the internal rattle, it turned me off because I just ran true dual dumped Red Hot Glasspacks, they had way to much bass and resonation. So Im looking at the super 44s with turn downs, hows the sound change with turn downs and no turndowns? and do you have cats?

[04SilveradoMykk]

I like your truck with the super 40s, but then when you mentioned the internal rattle, it turned me off

I think that was just an isolated incident.

[lt63]

true dual super 44

[bradthomashines]

just cut my flowmaster 10 series off my truck for performance reasons. down low the truck was awesome in torque but once the pedal was to the floor the mufflers were choking it around 45-50mph . so if your looking for performance id look into borla,magnaflow

[lt63]

just cut my flowmaster 10 series off my truck for performance reasons. down low the truck was awesome in torque but once the pedal was to the floor the mufflers were choking it around 45-50mph . so if your looking for performance id look into borla,magnaflow

i think you have bigger problems than your muffler.

have you checked your cats

[bradthomashines]

i think you have bigger problems than your muffler.

have you checked your cats

lol what cats?? i originally had a flowmaster on my truck when i bought it. i wanted it to be louder so i cut it off instantly noticed a loss of lower RPM trq but at WOT it was much more powerful. so then i went and had the cats cut and ran straight pipes opened it up even more at WOT had the truck tuned with the straight pipe exhaust and it was a beast. THEN after i installed the LPP long tubes i had the exhaust ran with flowmaster 10 series and i gained alot of low RPM torque back but once i punched it and it started to get into the upper RPM i could tell it was suffering bad so i went and had the flowmaster 10's removed and back to straight pipes and am much more happy with the performance and its not even retuned yet :). you don't have to take my word for it just go look at some flow charts of the flowmasters everyone knows they arent the best flowing mufflers around.

[lt63]

Suffering bad?

Its not because you have flowmaster 10 series mufflers, you might have some other issues with your truck.

[bradthomashines]

Suffering bad?

Its not because you have flowmaster 10 series mufflers, you might have some other issues with your truck.

lol no not at all. the engine is a big air pump. the faster the air is moved through the engine the more HP you will acheive but by moving air fast through the engine you sacrafice trq. the longer the air stays inthe combustion chamber the more torque is created. by moving the air fast the air doesnt stay in the chamber as long thus sacrificing torque. with the flowmaster 10's on my truck the air flow was slowed down due to the muffler hence the extra torque i felt in the lower RPM's BUT by gaining the torque down low with the flowmasters i sacraficed HP in the upper RPM so when i punched it with the mufflers on from a dead stop it felt good but slowed down in the upper RPM's once i cut the mufflers off the lower RPM trq is still there (which is why i went with 2 1/4" piping) just not as much as it was but in the upper RPMs it continues to gain speed much faster than it did with the mufflers. nothing is wrong with my truck its just the power is distributed in a different manner with and without the mufflers and i prefer without the mufflers. now had i gone with a higher flower muffler than maybe it would have been better balanced with a faster flow of air through the muffler but with the flowmaster it just felt like in the upper RPM it wasn't letting my truck breathe as much as it needed to.

[lt63]

ok well you described it as suffering bad which i would think of running bad sputtering, etc

[94_c/1500]

Been doing a fair bit of reading and you tube vids for sound bits on different flowmaster mufflers but still can't decide which flowmasters I like the best ,
Super 44 - Two Chamber Mufflers ,
Original 40 Series - Two Chamber Mufflers or
Super 40 - Two Chamber Mufflers
which one are most here running?

My set up is shorty headers, true duals with x-pipe, two cats, 2.5" to mid section down to 2.25" to the tailpipes.
Approx. 10:1 compression
The rest is in my sig.

Looking for aggressive sound without being to raspy.

I'd say the regular 40s, but the Super 40s have a nice deep tone and remain loud. Personally, I think I'm done with Flowmasters. For the price of one, you can buy 2 Cherry Bomb glasspacks. Flowmasters are nice mufflers and have a nice sound, but I like the sound of glasspacks too, so I'd rather cheap out and still have something I like.

[bradthomashines]

ok well you described it as suffering bad which i would think of running bad sputtering, etc

no i just mean suffering from the mufflers as a power killer. do some research most people are against flowmaster for the simple fact that they flow the worst out of pretty much every other muffler on the market.

[94_c/1500]

no i just mean suffering from the mufflers as a power killer. do some research most people are against flowmaster for the simple fact that they flow the worst out of pretty much every other muffler on the market.

Alot of people are against alot of different things for different reasons. Alot of people hate Chevys, dosn't mean they are bad.

[bradthomashines]

Alot of people are against alot of different things for different reasons. Alot of people hate Chevys, dosn't mean they are bad.

true but when you have evidence from a flow chart to prove it it makes all the difference in the world. if you were trying to get maximum flow from your cylinder heads and you went to a company that laid two sets of heads in front of you pointed to one set and says these flow pretty good and showed you the flow bench paper work and then showed you the other set and said these flow 5x better and showed you the flow bench paperwork which would you choose?

[94_c/1500]

true but when you have evidence from a flow chart to prove it it makes all the difference in the world. if you were trying to get maximum flow from your cylinder heads and you went to a company that laid two sets of heads in front of you pointed to one set and says these flow pretty good and showed you the flow bench paper work and then showed you the other set and said these flow 5x better and showed you the flow bench paperwork which would you choose?

That's not a good comparison because if you have a less powerful motor, you'd go with the lesser flowing heads.
I really don't know which is better, the only way and I mean the only way to know which is better is to have the perfect exhaust setup for each muffler and try each muffler you want or no mufflers at all. Then compare results, flow numbers with mufflers don't mean much.