opinions of side exhaust

jonfor · Nov 13, 2009

my car has tri-y's to anemic 2" pipes with el cheapo turbo mufflers and i hate the sound. the previous owner told me to be careful revving the engine or it will bust a muffler. so i guess this winter i will break down and replace the entire system, but i'm unsure of what i want. the car has a C4 but will eventually have either a top loader or a T5 and the engine is currently a 5.0 carbed roller. i sold my '73 stingray this year and one of my biggest regrets was spending big money on a full length flowmaster system and not running side pipes... so the redneck in me wants a side exhaust on this coupe. i would love to drive the car daily and park my pontiac (except for bad weather).

my question is: Dr gas 2½" system + HiPo manifolds + 2½" custom head pipes

would this set-up make decent power in a street car (like +250whp?) and would it be too obnoxious with the drone? also, what kind of ground clearance issues does it have? anybody running something close??

bikefreak600 · Nov 13, 2009

i was thinking about getting this kit in the 3" pipes. or fabricating a shelby style side exhaust. any input would be helpfull

D.Hearne · Nov 13, 2009

jonfor said:
my car has tri-y's to anemic 2" pipes with el cheapo turbo mufflers and i hate the sound. the previous owner told me to be careful revving the engine or it will bust a muffler. so i guess this winter i will break down and replace the entire system, but i'm unsure of what i want. the car has a C4 but will eventually have either a top loader or a T5 and the engine is currently a 5.0 carbed roller. i sold my '73 stingray this year and one of my biggest regrets was spending big money on a full length flowmaster system and not running side pipes... so the redneck in me wants a side exhaust on this coupe. i would love to drive the car daily and park my pontiac (except for bad weather).

my question is: Dr gas 2½" system + HiPo manifolds + 2½" custom head pipes

would this set-up make decent power in a street car (like +250whp?) and would it be too obnoxious with the drone? also, what kind of ground clearance issues does it have? anybody running something close??

Without actually hearing this setup on your car, you'll never be able to know the answer to your question. What an exhaust system should sound like is purely personal preference. You gotta pay to play in this instance. Also installing an H or X pipe, or a dual in/out muffler may be the answer to what you want in the system you now have. All three will tend to mellow out the tone by equalizing the exhaust pulses. I have tri-y's on the roller 5.0 in my 89 Ranger with muffler shop turbos. They started to grow obnoxious in tone till I built and installed what I call an equalizer pipe between the headers and mufflers. This is a single 5" diameter x 12" long pipe that both sides feed into then branch out of. It really mellowed and smoothed out the tone after installing it. Been there 5-6 years now. When I want loud, I jump in the 77 Comet, it's got a dual 2-1/2" system that's got an X in the middle feeding into dual 2-1/2" x 18" long "Turbo Tubes" capped with 8" long angle cut straights ending on either side of the 9" rear chunk.

JonK · Nov 13, 2009

You may find this helpful:
Finally got the exhaust done! new pics
He was at the 45th in Birmingham with his car also, I met him at a show at the Nashville SuperSpeedway. Even with his 429 the sidepipes were pretty quiet at idle as he left suprisingly.

I'm thinking of adding some cutouts to a full system just so I can 'pop' on some side exh. pipes when I hit the opentracks.
Jon

woodsnake · Nov 14, 2009

I have 2 1/2 inch pipe with magnaflows on my car, and I really like the sounds it makes...

gracecar013.flv video by woodsnake4462838 - Photobucket

jonfor · Nov 14, 2009

woodsnake said:
I have 2 1/2 inch pipe with magnaflows on my car, and I really like the sounds it makes...

gracecar013.flv video by woodsnake4462838 - Photobucket

your exhaust sounds good.

maybe 15 or so years back, soon after i got out of the military, i was seeking a hotrod and chased an ad in the paper for a '67 cougar. it was a 289 with a 4 speed, but it was kind of rough around the edges. i passed on it, but kind of always wished i had bought it. instead i bought a super clean '70 Lemans sport with a 400. sad fact of life is that you can't own them all.

i'm still wanting side exit pipes?

woodsnake · Nov 14, 2009

I had a pair of 90 degree pipes on my 67 years ago, and wanted to put them on my kids 70.

Do you mean side pipes like a Cobra/vette? or just exiting from the side?

Either way, it's your car, do what you like....

TurboDoctor · Nov 14, 2009

I had side exiting pipes on my 66 fastback that turned out right infront of the rear tires. They sounded great just did not fucntion great.Mustangs are already low and I lowered mine alot more. I had 2 1/2 pipes and they would scrape on every speed bump or steep angled drive way on exit. Just keep that in mind, not sure how low your car is, so that may or may not apply to your car. I have seen people how ever run big flat tips from under the car out to combat clearance issues.

69Rcode_Mach1 · Nov 14, 2009

That kit sounds very nice, my friend has it on his 350 camaro. It is very very loud though, my rear exit Dr. Gas and spintech setup sounds great but it is not unbearable cause it comes out the rear. That side exit kit is sweet but it gets old fast, hits you right in the ear, and you won't be able to enjoy driving it without ear plugs. Especially without overdrive your head will be ringing every drive.

tx65coupe · Nov 15, 2009

There is no need for 3 inch duals unless your running a reworked big block. The best size is 2.25 or 2.5 depending on what you have. For your car 2.5 is what I would probably run.

I don't know much about that product. I don't know if those are straight through, turbo style, or chambered mufflers. I would stay away from chambered mufflers. They generally do not flow as well and they sound hollow.

I would rather have this.

Mustangs Unlimited - The Premier Source for Mustang, Shelby and Cougar Parts and Accessories

woodsnake · Nov 15, 2009

Isn't there a guy that sells those made out of stainless on the boards here?

pyroman · Nov 15, 2009

I wouldn't call side exit exhaust redneck, in fact it has a distinct advantage over rear exit exhaust. (Of course I intend to verify this before going with it) Right in front of the rear tire is a low pressure zone which will aid in expelling exhaust from the engine. I plan on doing it on my car eventually and when I do I'm going to set up strain gauges to determine where the lowest pressure zone is and route my exhaust that way. I'll probably compare that zone to where the exhaust is exiting now. Also this is some sweet side exhaust

YouTube - Mustang Boss - Ford Racing

silverbluebp · Nov 15, 2009

I have side exits on my 66. 289 running into a 2 1/2" X pipe and Dynomax race bullets. It's pretty loud, but that's the way I like it.

YouTube - 1966 Mustang sound bite 1

tx65coupe · Nov 16, 2009

woodsnake said:
Isn't there a guy that sells those made out of stainless on the boards here?

I'm not sure. Which setup are you referring to, the one I posted a link to or the original poster?

tx65coupe · Nov 16, 2009

silverbluebp said:
I have side exits on my 66. 289 running into a 2 1/2" X pipe and Dynomax race bullets. It's pretty loud, but that's the way I like it.

YouTube - 1966 Mustang sound bite 1

Thats sweet! Sounds great.

woodsnake · Nov 17, 2009

I was referring to this guy,

http://www.stangnet.com/mustang-forums/797265-custom-t-304ss-2-5in-65-gt350-style-exhaust.html

tx65coupe · Nov 18, 2009

That looks like a cool setup too!

rusty428cj · Nov 18, 2009

Mustangs to Fear makes a kit that you don't have to cut up the rockers.

Mustangs to Fear

jonfor · Nov 18, 2009

thanks for all the great information! i need to sit down and make some decisions.

jabb · Nov 18, 2009

I'm going to set up strain gauges to determine where the lowest pressure zone

You mean pressure gauges right? Strain gauges measure physical deformation. I want to do a similar test using digital pressure sensors on my hood to find high and low pressure zones for ventilation louvers.

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