How do I make it sound....

[chevyc1068]

How would I make my pickup with a 307 in it sound loud, but with a deeper mellower sound, not a really high pitched sound? I'm putting headers, true dual exhaust. So info on what size of headers, length and size of mufflers(glass packs), tips, and size of pipes.

[AesC10s]

It will sound sweet with open headers!!

[bryanw1968]

I would go with 1 5/8" headers with either a 2 1/2" or 3" collector.
Glass packs are going to be deep at idle and really loud when you nail it. However if you get a pair that are long enough it won't be near as loud and will be much more mellow. A cheap pair of turbo mufflers wouldn't sound bad and would be much quieter and mellow also. Most chambered mufflers are going to be pretty loud if that's the tone you're going for. Otherwise dynomax makes several different straight through design mufflers that would be mellow and sorta loud to very loud.

Also, I would go with 2 1/2" pipes if you don't plan on doing anything else with the motor. If you have plans for more HP later on I'd go with a 3" collector and 2 1/2" pipes. The 1 5/8" primary headers should still be fine.
IMHO

Good luck,
B

[chevyc1068]

You'd really go with 2 1/2 pipes on a true dual system for a 307? I thought that might be to easy of exhaust flow and you'd lose some low end torque. Would there be much difference between 2 1/2 and 2 1/4? How long of glass packs can you go before you lose a lot of sound, 11", 18", 24"???

[AesC10s]

Run 2 1/2 pipe but put 2 1/4 tips on the end of the exuast to keep your low end tourqe

[chevyc1068]

How do you put 2 1/4 tips on a 2 1/2 pipe?

Does it matter how close you put the mufflers to the headers what kind of sound it makes?

[AesC10s]

Originally Posted by chevyc1068

How do you put 2 1/4 tips on a 2 1/2 pipe?

Does it matter how close you put the mufflers to the headers what kind of sound it makes?

use a tip that fits 2 1/2 pipe and has a 2 1/4 outlet. You should put the mufflers under the bed cuz if they are under the cab it will be loud inside the cab.

[pkj]

2 1/2 pipes bent at local exhaust shops will be about the same as 2 1/4 pipe. they dont use mandrel bends. exhaust shop can flare or neck your tailpipes and tips so they fit. muffler location, the longer your tailpipes the more rumbel or rapping with glass packs. for what you want keep mufflers as far forward as you can, but make sure you can still service stuff like trans if you have to. those glass packs will get very load in ashort period of time. i would consider the longer ones, after some time its not load enough to piss off the comunity, then its ice water or torch time. that will get them riled.

[Texasdeere]

Generally speaking, the bigger the pipe and the shorter the exhaust system is the deeper it will sound. (with a drone usually) Everything will affect the sound meaning, muffler position (front to back) and how many bends are in the pipe.

For the results you want, I would say headers with 2.5" to 2.25" pipe straight back to flows or turbo mufflers and dumps at the axle. To tone it down a bit you could later add pipes to dump over the axle instead of in front of it.

Just my 2 cents.

[AesC10s]

Originally Posted by TexasC10

Generally speaking, the bigger the pipe and the shorter the exhaust system is the deeper it will sound. (with a drone usually) Everything will affect the sound meaning, muffler position (front to back) and how many bends are in the pipe.

For the results you want, I would say headers with 2.5" to 2.25" pipe straight back to flows or turbo mufflers and dumps at the axle. To tone it down a bit you could later add pipes to dump over the axle instead of in front of it.

Just my 2 cents.

Flows lose the nice deep sound at about 2000 rpms.....atleast the 2 40 series on my 99 dodge durango do.

[kelsfine69]

M2C

Flowmasters always sound good

[brak]

Originally Posted by AesC10s

... You should put the mufflers under the bed cuz if they are under the cab it will be loud inside the cab.

I can't stress that enough.

the Previous Owner installed true duals exiting in front of the rear wheels, so the two flowmasters were directly under the seats. HOLY CRAP!!! when my friend would ride with me, we would be screaming at each other, and only 2 feet apart.
Not to mention the heat that would radiate up from the mufflers.

It probably wouldn't have been that bad, except when i removed the exhaust, i found that both mufflers had blown out / rusted through directly on top forcing all the sound and heat at the cab floor

[Moneypit]

I used the 2.25" kit from LMC. I got the the glasspacks(which are 18") with the stock exit. In front of that I have 1 5/8" Heddman long tube headers and ended it with echo chamber tips that measure 18" long and 3" in diameter. I picked up some power(registered by the butt-o-meter)and am able to "peel out" on dirt while in second gear which I wasn't able to do before. It has a nice low grumble that I like and is louder and meaner sounding than my friends Harley Davidson 1200S with the stock exhaust.

[smitty62]

WHATEVER You do, don't use Flowmasters-------I will never understand what people see (hear?) in there tinny, crappy sound..they aren't deep sounding--just loud

[gkolmatycki]

In my opinion, 1 5/8" headers with either 2 1/4" or 2 1/4"" piping. If you are going to use a cat, install a magnaflow high flow cat. Magnaflow makes straight through mufflers that give a deep, mellow tone that is great, but not as raspy/high pitched as flowmaster. A pair of turbo mufflers would sound similar to stock. Chambered mufflers, such as flomaster, are going to be louder. I love the new flowmaster super 40 or original 40 on a V8 though. Dynomax makes straight through mufflers & a super-turbo muffler that would be mellow and sort of loud (super-turbo) to very loud (ultraflo - SS or Aluminized).

Personally, I like my true dual magnaflows with 3.5" tips. They are deep, mellow, & throaty. Loud enough to turn heads when you step on the gas pedal, but not crazy loud that they annoy you.

[gkolmatycki]

Sorry, my bad, 2 1/4" or 2 1/2" piping.

[68Stepbed]

If you want a deeper tone, stick with manifolds. Headers will give you the higher pitched sound. The larger 2 1/2" pipes will also carry a deeper tone than 2 1/4", but it won't make a big difference. I personally don't like glasspacks because they are high pitched, especially after about 6 months or so of use. If you're serious about glasspacks though, I recommend a set of Smitthy's. They come in two lenghts. Get the longer ones.

An H-pipe or balance tube, not an X-pipe, will also help with a deeper, more mellow tone.

[72 cheyenne pdx]

IMO - go with 2.5 pipe and use Borla mufflers. I think Borlas are the best sounding muffler on the market.

[ClassicRedneck05]

im using the Race Magnum Bullet mufflers from Dynomax i got them from JEGS for a decent price http://www.jegs.com/webapp/wcs/store...9716_-1_128827

and i have cheapy lil headers and mine sound AWESOME but a good cam will help as well im actually bout to order me some Hooker Compititions i think i have got good feed back from others who have them

[chevyc1068]

So what happens if you get cheap glass packs? Like the ones Summit offers? Do you just get a loud sound, a deep sound, or is it to muffled?

[ClassicRedneck05]

well my cousin ownes a muffler shop here in Cleveland Tx and i went to him on it he told me the inhouse brand they had would saoud the same as what i got ALMOST just not as loud keep in mind with these types there is a thin thin thin layer of the glass packing hense being a race muffler and sound MMMMMMMEEEEANNNNNNN as hell whenh u open it up but they inhouse brand doesnt lat as long either

[Mrboson1]

Originally Posted by 68Stepbed

If you want a deeper tone, stick with manifolds. Headers will give you the higher pitched sound. The larger 2 1/2" pipes will also carry a deeper tone than 2 1/4", but it won't make a big difference. I personally don't like glasspacks because they are high pitched, especially after about 6 months or so of use. If you're serious about glasspacks though, I recommend a set of Smitthy's. They come in two lenghts. Get the longer ones.

An H-pipe or balance tube, not an X-pipe, will also help with a deeper, more mellow tone.

My uncle has a the x-pipe on his 68 chevy c-10. We felt it gave the truck a deeper tone. Sound really good. When we back the truck out of the garage it shakes all the dishes in the kitchens.

[bigtruck81]

i have 1 5/8 headers on my 77 with 2 1/4 pipe, and 40 series flows. there's nothing high pitched about it. just a nice low rumble at idle or cruise, and when you get in it, they really sound like a flowmaster.

[Spray-Bomb]

http://www.jegs.com/images/photos/38749100.jpg

I have the FlowTech afterburner headers, 2.5" pipe with glasspacks (I'm pretty sure they're 18"), 4" x 24" rolled slash cut tips that run all the way out the back & exit in the corner

I ran the dog pee out of my truck the first few months, to try and make my glasspacks louder (it didn't do much) but in my opinion it's not loud enough

The 4" tips give it a really nice deep sound until you hammer it, then it's pretty loud (kinda raspy / coarse)

Oh yeah, & it's a true dual setup

If you don't care about performance (and have the extra money) go with 3" & dump it under the bed for deep sound

Also if you aren't glued to a dual exhaust, then the sound of a single 3" muffler dumping under the bed sounds good to me
I've heard some single 3" flows dumping under the bed that sounded good (dunno what series), & my 90 has a single 3" that runs into a 3" x 14" glasspack that I took some 4" or 5" exhaust pipe and built a 45 degree tip that I welded to the shell of the muffler (it sounds really good, deep and really aggressive but not poppy or raspy like most glasspacks) it dumps right in front of the axle

It's all about your particular taste, but I hope this helps

[ThatOneBlue67]

My 1967 with a 350 had used hooker headers with the 3" collector (I think, didn't actually measure). Its whatever the most common size is I'm sure.

ANyway, I ran a foot of straigh pipe (on both sides) 18" cherry bombs, and used 45 degree angles plus another foto of straight pipe. THey dump off between the cab and bed, but are still hidden. No H pipe or anything.


My dad says they sound like crap, but I love them! I've gotten used to having to scream to talk to my passenger.

Even still they aren't "low" enough for me, so I might have the exhaust go to rear exits under the bumper and install cable-operated cutouts. So, if I feel like it, I can run open headers with the pull of 2 knobs.

*Sighs* I remember the first night I had that V8 in my truck, which was a Friday. I had the foot of pipe and the cherries and that was it. (The extra pipe afterwards was enough to mellow it a lot.) I pulled up next to some uptight, upscale couple in a BMW SUV. Popped that bad boy in neutral and stood on the pad. Those richies jumped out of their skins.