?'s about exhaust

i have 97 sierra with 5.7L, i'm trying to figure out what the best duel exhaust for it would be. I want it to have rumble, and sound good, but not overly loud. Any ideas what would be good? I've thought about Flowmaster.

I also have a 1997 C1500 but mine is a 5.0 V8.
I have a friend that manages an exhaust shop and he hooked me up with a Flowmaster 40series muffler (single inlet, dual outlet) and two turn-down pipes. This muffler/downpipe setup is located near the right rear tire under the bed. It is commonly known as dump exhaust since the exhaust is dumped under the bed and it resonates nicely so you can hear a great Flowmaster sound.
I got the muffer, 2 turn-down pipes, and quick install for $100. However, this was with a real nice friendly discount. I have seen just the Flowmaster mufflers online for about $75-$80 for the 40series.

I am very happy with this setup on my truck and I would definitely recommend it to anyone who wants a nice sound :)

Thanks for advice, have to try it and let u know how it sounds

It depends on what you want. Flowmaster doesnt flow really well as Dynomax and magnaflow, but it gives you really nice sound. Say if you fart than your magnaflow muffler wont be heard!

Also the pipe size is important the bigger the better and quality too. You want mandril-bent pipes not the crap that shops sometimes bend or sell. (no kinks)

I say if your stock pipe is good and you dont wanna spend lots of money dont get the pipe. Instead use a large size adaptor to get deeper tone.

The complete cat back systems are for SUCKERS. (expensive) Stick with mandril or stock pipe.

Also your should decide whether you want great gas mlg or more power.

I personaly recomend you to remove the cat and air injection pump. If you have an emission test than go pass it first and then remove and install it again when its time to do emissions. You will see that your MPG will go up pretty seriously and you can get up to extra 50hp with the whole set up if you remove the cat.

Yours is a real dual or you have a Y pipe?

If its dual go Flowmaster 40 but dont go extra large pipe size if you remove the cat(cats) because you can loose torque and gas mlg will go down. Your engine still needs some restriction too. Id its single go 80 series like camaros have

Do the work yourself maybe exept removal of converters and mufflers. Dont weld anything on there too. (just clamp)

I want say anything about headers yet.

cost: muffler removal and cat or cats $50 (you can cut them yourself)

muffler ( mufflers) $60 on or $120 for two

stock pipes $0

some clamps and adaptors $30

muffler,-s install $30-100 if dont do yourself

elbows and tips -- up to you $?

Results:

40- 70 hp icrease, maybe some 30lb of torque
Real deep muscle car sound.

I wouldn't advocate to anyone to remove the cat(s.) The fines are quite steep (start in the $10,000 range in most places) so it isn't worth it. I admit being from rural Georgia I had the cat off mine for quite a while before moving to North Carolina (inspections) and an '88 350 4X4 with some self control (cruising at no more than 65 mph) getting 21 mpg on a road trip was nice as well as very noticeable better low end but it is irresponsible and damaging to the hobby industry to advocate doing it. You can only remove the cat on a farm-only vehicle. Do it yourself if you want (according to your own personal beliefs/convictions about air pollution and being responsible) but don't openly advocate for others to do it. As for the AIR, you can actually get rid of it in some places but most require you leave to leave it all intact. I can tell you from experience that a truck with straight pipes gets no better mileage than the same truck with a good set of duals with crossover and a set of good mufflers (straights don't sound too good either, I was just being obnoxious for while.) The addition of a pair of high-flow cats reduced the mileage to 19.5 on road trips (and a larger TBI among other things has since dropped that a little more over the last ten years or so.) Living with high flow cats isn't so bad, there is far worse legislation in the works to worry about. As for mufflers, that is personal taste. I would suggest just listening to other's trucks and if you hear a tone you like ask them what their setup is.

I had a flowmaster on my 92K1500 but I got tired of the noise...went with a magnaflow dual in and dual out single muffler, sounds good and does not generate too much noise in the cab at road speeds.

If you go with the flowmaster, then I would make sure to move the muffler as far away from the cab as possilbe.

Flowmasters sounds good.....but that can get old really fast.

I think the magnaflow muffler sounds very nice and is well made, it does cost some $$.

What do you guys think about somethin like this? http://www.jcwhitney.com/autoparts/Product/tf-VehicleBrowse/s-10101/Pr-p_Product.CATENTRY_ID:2006400/showCustom-0/p-2006400/N-200729944+1989+111+600001712/c-10101

I also have a few other question for ya guys.

What are resonators? will this give me tone?
I want my truck to sound like an old muscle car what would i get for this? Does it make much difference if the exhaust "dumps" of exits out of a tail pipe?

Thanks,
Ryan

What do you guys think about somethin like this? http://www.jcwhitney.com/autoparts/Product/tf-VehicleBrowse/s-10101/Pr-p_Product.CATENTRY_ID:2006400/showCustom-0/p-2006400/N-200729944+1989+111+600001712/c-10101

I also have a few other question for ya guys.

What are resonators? will this give me tone?
I want my truck to sound like an old muscle car what would i get for this? Does it make much difference if the exhaust "dumps" of exits out of a tail pipe?

Thanks,
Ryan

Resonators are pretty much just glasspacks placed either before or after the muffler to quiet things down even more... or used alone for a glasspack sound. As far as the old muscle car sound, there are a ton of factors to get the right sound and/or performance you want. Old muscle cars typically had a tall cam that gave them a rough idle in combination with dual exhaust gave them that characteristic sound.

To get back to basics: A smaller diameter pipe will give you a higher pitched sound (2" or so). Larger diameter will give you a deeper tone (3" or bigger). Now glasspacks or resonators are louder when they are short and quieter when they are long. 12" will be like straight pipes and a 24-36" will only produce a mellow tone at idle and roar when you stomp on it.

Also remember back pressure... you open exhaust up too much and the truck will have trouble holding idle... not to mention lost torque, but if you go too small of a pipe you'll lose HP.

On a stock or slightly modified 350, I'd go with a true dual setup... none of this Y into a single cat and Y back to dual crap like you see in JC Whitney. I'd use a 2.5"-3" diameter pipe with 24-30" glasspacks/resonators as far back on the truck as possible, a balance tube somewhere near the spare tire and a set of rumble chamber tips coming out the back on with a 4-4.5" exit. It's good for low end torque, HP and a sweet subtle rumble until you jump on it and then you sound like a stock car.