350 Straight Piped Volume
#1
Junior Member
Thread Starter
Join Date: May 2011
Location: Metiskow, Alberta
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
Car: '83 Trans Am
Engine: 305 soon to be Vortec 350
Transmission: 700r4 (until it craps out)
Axle/Gears: open 3.23
350 Straight Piped Volume
Im assembling the parts I need for a vortec 350 this summer and was wondering about exhaust volume if I ran without mufflers and with shorty headers (true dualled if space allows). Would this level of volume get too irritating? My buddy has a 91 f150 true dualled with stock manifolds and glasspacks. I like the sound he has. How would mine compare?
#3
Junior Member
Thread Starter
Join Date: May 2011
Location: Metiskow, Alberta
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
Car: '83 Trans Am
Engine: 305 soon to be Vortec 350
Transmission: 700r4 (until it craps out)
Axle/Gears: open 3.23
Re: 350 Straight Piped Volume
Would it just be loud as hell or sound like garbage too?
#4
Supreme Member
iTrader: (5)
Join Date: Mar 2011
Location: Central Texas
Posts: 2,893
Likes: 0
Received 4 Likes
on
4 Posts
Car: GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: Aussie 9-bolt/3.27 posi
Re: 350 Straight Piped Volume
Ever hear the phrase "Beauty is in the eye of the beholder"? In this case....In the ear of the beholder. You may love it while another guy hates it. It is 100% pure opinion. So nobody can tell you if YOU will like it or not. Only if THEY like it or not.
#5
Junior Member
Thread Starter
Join Date: May 2011
Location: Metiskow, Alberta
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
Car: '83 Trans Am
Engine: 305 soon to be Vortec 350
Transmission: 700r4 (until it craps out)
Axle/Gears: open 3.23
Re: 350 Straight Piped Volume
I suppose you're right. Where I come from social status is based on the loudness of your exhaust and the length of your ******. If the thing turns out to be too much of an annoyance could someone recommend a good flowing bargain muffler. Would a glass pack tame it much?
#6
Junior Member
Thread Starter
Join Date: May 2011
Location: Metiskow, Alberta
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
Car: '83 Trans Am
Engine: 305 soon to be Vortec 350
Transmission: 700r4 (until it craps out)
Axle/Gears: open 3.23
Re: 350 Straight Piped Volume
M u l l e t
#7
Re: 350 Straight Piped Volume
i have used glass packs on a few different cars and trucks and at first they sound decent but after a week or two of beating on them the packing gets burned up and/or spit out of the tail pipe and it sounds like crap. But just like it was already stated, one mans taste is not the same as everyone else.
Trending Topics
#8
Member
Join Date: Mar 2011
Location: williamstown,NJ
Posts: 202
Likes: 0
Received 1 Like
on
1 Post
Car: 95 9C1,99 Sierra,90Sierra,00 sierra
Engine: TBI350,LM7,LT1,Vortec 350
Transmission: 700r4,4L60e,4L60e,4L80e
Axle/Gears: 10 bolt,14bolt,3:42,3:73,3:08,3:73.
Re: 350 Straight Piped Volume
Theres a guy around my way with a chevy 3500 with the 5.7L 350 vortec he has long tubes true dual no cats then dynomax bullets it sounds good the pipe crack but not that bad.It cracked and popped alot more with manifolds.But if your just running pipes no nothing that thing is going to be all bark and no bite.Before he put long tubes on it he was half way to the floor just to get it off the line.He is actually a 355 vortec running 11:1 compression.
#9
Supreme Member
iTrader: (2)
Join Date: May 2009
Location: Delaware
Posts: 3,371
Likes: 0
Received 1 Like
on
1 Post
Car: 91' Firebird SOLD
Engine: 350 TPI +bolt-ons
Transmission: 700r4
Axle/Gears: 3:42
Re: 350 Straight Piped Volume
Im assembling the parts I need for a vortec 350 this summer and was wondering about exhaust volume if I ran without mufflers and with shorty headers (true dualled if space allows). Would this level of volume get too irritating? My buddy has a 91 f150 true dualled with stock manifolds and glasspacks. I like the sound he has. How would mine compare?
#10
Junior Member
Thread Starter
Join Date: May 2011
Location: Metiskow, Alberta
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
Car: '83 Trans Am
Engine: 305 soon to be Vortec 350
Transmission: 700r4 (until it craps out)
Axle/Gears: open 3.23
Re: 350 Straight Piped Volume
This is gonna be almost an entirely street car. I think im going to drop the motor in and make sure that's a okay first and then do a high quality exhaust straight through with a segment of the pipe where I can cut and add a muffler if necessary that way I'm able to change my mind if I wanted to.
#11
Supreme Member
iTrader: (2)
Join Date: May 2009
Location: Delaware
Posts: 3,371
Likes: 0
Received 1 Like
on
1 Post
Car: 91' Firebird SOLD
Engine: 350 TPI +bolt-ons
Transmission: 700r4
Axle/Gears: 3:42
Re: 350 Straight Piped Volume
This is gonna be almost an entirely street car. I think im going to drop the motor in and make sure that's a okay first and then do a high quality exhaust straight through with a segment of the pipe where I can cut and add a muffler if necessary that way I'm able to change my mind if I wanted to.
#12
Junior Member
Thread Starter
Join Date: May 2011
Location: Metiskow, Alberta
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
Car: '83 Trans Am
Engine: 305 soon to be Vortec 350
Transmission: 700r4 (until it craps out)
Axle/Gears: open 3.23
Re: 350 Straight Piped Volume
Does that have to do with the back pressure (I'll refer myself to the sticky) I know it matters a lot with two stroke motors but I thought that less resistance to flow was better in a 4 stroke
#13
Supreme Member
iTrader: (2)
Join Date: May 2009
Location: Delaware
Posts: 3,371
Likes: 0
Received 1 Like
on
1 Post
Car: 91' Firebird SOLD
Engine: 350 TPI +bolt-ons
Transmission: 700r4
Axle/Gears: 3:42
Re: 350 Straight Piped Volume
Yes and no. Tell you what,take a look at the muffler test i attached. It shows dyno results with open exhaust(straight pipes,no mufflers) vs some of the performance mufflers. The mufflers made more power than the straight pipes almost every time. Even with the Flowtech "warlock" muffler which does have a straight thru bypass tube ,it still made more power than open/straight pipes. Now if you run without a catback system and muffler,then you end up shifting your powerband way up in the rpms ,which would take away some lowend torque, on the street and in traffic you never really go high in the rpms ,so i would put a catback on it with muffler.
Last edited by ninetyone; 01-15-2012 at 10:58 PM.
#16
Supreme Member
Re: 350 Straight Piped Volume
Would probably be too loud and sound like garbage.
#17
Supreme Member
iTrader: (20)
Re: 350 Straight Piped Volume
Ditto on garabage sound and too much volume.
I had my exhaust disconnect on me (slip fit came undone) and I had to take the muffler off the car and limp home. Open exhaust is loud and doesnt sound good at all IMO.
Only time it does sound decent is on a cammed up performance build. One of the best sounding cars i've heard in my life just runs a straight pipe over the axle and dumped. 4" on a 406" sbc. Sounds amazing. Loud tho but this one has good tone.
I had my exhaust disconnect on me (slip fit came undone) and I had to take the muffler off the car and limp home. Open exhaust is loud and doesnt sound good at all IMO.
Only time it does sound decent is on a cammed up performance build. One of the best sounding cars i've heard in my life just runs a straight pipe over the axle and dumped. 4" on a 406" sbc. Sounds amazing. Loud tho but this one has good tone.
#18
Member
Join Date: Oct 2011
Location: Ewing,New jersey
Posts: 116
Likes: 0
Received 0 Likes
on
0 Posts
Car: 83 Berlinetta
Engine: 2.8
Re: 350 Straight Piped Volume
I ran strate pipes on my mustang for 1 week.....tore em off and had flowmasters put on..i thought loud would be cool but cruising to philly on a saturday night from tranton nj was unbarable
#19
Junior Member
Thread Starter
Join Date: May 2011
Location: Metiskow, Alberta
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
Car: '83 Trans Am
Engine: 305 soon to be Vortec 350
Transmission: 700r4 (until it craps out)
Axle/Gears: open 3.23
Re: 350 Straight Piped Volume
That muffler dyno chart is really interesting. The difference in numbers is small but it IS there. I was doing some thinking too and since i do have 40mi each way to work this summer the noise would get pretty unbearable. I figure ill run a catback to mufflers like you guys suggested. (minus the cat as up here in Alberta we dont have to worry about the EPA or any of that emissions testing)
#20
Supreme Member
iTrader: (2)
Join Date: May 2009
Location: Delaware
Posts: 3,371
Likes: 0
Received 1 Like
on
1 Post
Car: 91' Firebird SOLD
Engine: 350 TPI +bolt-ons
Transmission: 700r4
Axle/Gears: 3:42
Re: 350 Straight Piped Volume
That muffler dyno chart is really interesting. The difference in numbers is small but it IS there. I was doing some thinking too and since i do have 40mi each way to work this summer the noise would get pretty unbearable. I figure ill run a catback to mufflers like you guys suggested. (minus the cat as up here in Alberta we dont have to worry about the EPA or any of that emissions testing)
#21
Junior Member
Thread Starter
Join Date: May 2011
Location: Metiskow, Alberta
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
Car: '83 Trans Am
Engine: 305 soon to be Vortec 350
Transmission: 700r4 (until it craps out)
Axle/Gears: open 3.23
Re: 350 Straight Piped Volume
The largest gap I can see is between the straight pipes and the flowtech warlocks with the bypass open and the borla xs. The other gaps are rather small.
#22
Member
iTrader: (3)
Join Date: Sep 2011
Location: Batesville, AR
Posts: 310
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1990 Formula Firebird
Engine: 350 (5.7) TPI
Transmission: WC T5
Axle/Gears: 3.42 POSI
Re: 350 Straight Piped Volume
I've always ran header equipped, catalytic converter removed, true dual straight pipe exhaust with no muffler/resonator just pipe. I do run x-pipes though.
This Firebird, I've not touched exhaust wise but it is manifolds, true dual piping that at the very tip end mates to a super short glasspack and ends there before the rear tire. Super loud, let off the gas and it crackles and pops for quite a distance.
This Firebird, I've not touched exhaust wise but it is manifolds, true dual piping that at the very tip end mates to a super short glasspack and ends there before the rear tire. Super loud, let off the gas and it crackles and pops for quite a distance.
#23
Supreme Member
iTrader: (2)
Join Date: May 2009
Location: Delaware
Posts: 3,371
Likes: 0
Received 1 Like
on
1 Post
Car: 91' Firebird SOLD
Engine: 350 TPI +bolt-ons
Transmission: 700r4
Axle/Gears: 3:42
Re: 350 Straight Piped Volume
Thats correct, but remember in traffic and on the street you are not going to go very high in the rpms. You shouldn't have to. That is where having the low end torque is nice. Believe me with out a muffler , you will feel a loss in low end around town.
Last edited by ninetyone; 01-17-2012 at 03:32 PM.
#24
Supreme Member
iTrader: (2)
Join Date: May 2009
Location: Delaware
Posts: 3,371
Likes: 0
Received 1 Like
on
1 Post
Car: 91' Firebird SOLD
Engine: 350 TPI +bolt-ons
Transmission: 700r4
Axle/Gears: 3:42
Re: 350 Straight Piped Volume
I mean have you ever thought about getting a cut-out for when you want to be loud? Mount it behind the converters for a good sound on the street
#25
Supreme Member
iTrader: (20)
Re: 350 Straight Piped Volume
The length of the straight pipe makes all the difference in the world. If you ran all the way back with no muffler it would likely make less torque and hp overall since the tuned length of that distance does not work well with the operating range of the motor.
Properly sized, the right length of straight pipe off the header will make most power and torque. Its a tuned collector. Too long will hurt power, to short will hurt power. A muffler can hurt power if not sized right too. Different styles can also change the effective tuned length of the system. A large area open box styled muffler can send exhaust pressure waves back to the head ports and if timed right, this can help scavenging. Theres alot of science behind the exhaust side of things.
Properly sized, the right length of straight pipe off the header will make most power and torque. Its a tuned collector. Too long will hurt power, to short will hurt power. A muffler can hurt power if not sized right too. Different styles can also change the effective tuned length of the system. A large area open box styled muffler can send exhaust pressure waves back to the head ports and if timed right, this can help scavenging. Theres alot of science behind the exhaust side of things.
#26
Supreme Member
iTrader: (2)
Join Date: May 2009
Location: Delaware
Posts: 3,371
Likes: 0
Received 1 Like
on
1 Post
Car: 91' Firebird SOLD
Engine: 350 TPI +bolt-ons
Transmission: 700r4
Axle/Gears: 3:42
Re: 350 Straight Piped Volume
I think he should put a nice 2.5 catback on that thing with a cat converter to see the best results. I think he is running an otherwise stock vortec 350
Last edited by ninetyone; 01-17-2012 at 03:31 PM.
Thread
Thread Starter
Forum
Replies
Last Post
Eric-86sc
Engine/Drivetrain/Suspension Parts for Sale
0
08-24-2015 09:01 PM