Jacobs454

My friend (until he bought a Mustang) owns a '92 Mustang LX 5.0. Basically stock with 40-series flowmasters. All legal, no engine mods, both cats, all of it. I have an '89 RS 5.0, stock except for a 3" exhaust and 40-series FlowMaster. Both cars side-by-side, it's no comparison - the freakin' 'stang sound WAY better. I know the single-exhaust and stock, gutless 305TBI hurts it, but is there any way to make the ol'e RS sound better? Any help would be greatly appreciated.

AutoRoc

None of them ACTUALLY sound good. It's actually just a lot of resonance coming from typical stock cars. The Mustang just has more. I'm sure Flowmaster had the mustang engine perfectly matched to a set of 40 series flows

If you wanna be a bad ***, you run a bad *** 383 with 12:1 compression, a .600" lift cam with around 250 degrees of duration, 110 lobe sep, some wicked heads, headers and...nothing else behind them Goodluck

I actually have a 40 series flowmaster welded in place of my catlytic converter and it dumps right there onto the ground with a turndown. It sounds GREAT for stock 305. Maybe get rid of all that 3" tubing and try what I did.

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Denny Villemure
1989 Camaro IROC-Z Convertible, 305 TPI, 2.73 Gear, Flowmaster 2 chamber. 15.60 on motor, 14.20 on a 75 shot from NX. Woo hoo!
www.denny.cz28.com

RedIrocZ-28

I will attest to the fact that AutoRoc's Iroc is THE BADDEST sounding Iroc I have ever heard! I wanted to friggin rip my whole new exhaust off right then and there when we were crusing side by side on Woodward that one night. No contest, Denny's car sounds awesome.

88 427 Camaro

IIRC, the mustangs are a 180 degree motor which is why they sound different. Same as the IRL cars are now (originally they were not). Personally, I really like the way a modded stang sounds.

Miles

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88 427 BBC Camaro
7.76 @ 94 (1/8 mile) 10/01
12.18 @ 113 (1/4 mile) 10/99
I have brand new series 3 9 bolt posi carriers and gear sets to 4.10 available for borg warner 9 bolts. Check my web page for more info.

http://www.koolmeister.com

Jaysz28

You need more motor, plain and simple

all of what the other guys say is true, but you need a good motor if you want your exhaust to sound good.

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-Jason
"Get this, no man with a good car needs to be justified."

91 Z28 305 TPI/ 5 spd (15.301 @ 88.31 mph)
92 Formula WS6 305 TPI/ 5 spd (14.639 @ 95.44 mph)
My 3rd gen Headache

86 IROC

I find it funny that no one has mentioned putting headers on your RS. Your friend's stang, while it may be stock, has factory headers/tubular exhuast manifolds... call them what you like. His stang has smaller valves, but has a cam with more duration and slightly higher compression. Try a set of headers, I'm sure it will get louder.

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1986 IROC-Z, 8pt. cage, 383, Mini Ram, DFI, Art Carr 700R4, 12 bolt.....

badass_mustang_killer

yea no ****. i cant believe all of you werent suggesting headers. that makes a ton of difference . if i was you though i would also save up and get a flowmaster american thunder exhaust system.

Zepher

When my car had the TPI 305 in it and the PaceSetter 3" Catback, it sounded very good.
Take a listen to it,
http://www.donpagevideo.com/video/ZepherWS6.mpg



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1986 Trans Am WS6
LT4 350, LT4 Hot Cam, T56, 52mm TB, MSD 6A & Blaster 3 Coil,
LT1 3.42 Posi/Disc Rear, Lakewood LCA's & Adjustable Panhard Bar,
Eibach Lowering Springs, 17x9 WS6 Wheels, T-Tops,
Custom 4" CAI w/ K&N Filter, 160*stat.
Autometer TriplePod with Phantom A/F & Boost Gauges.
High Speed Run: 157mph
Best 1/4 mile run: 14.94@91.67mph This was with the LG4 carb setup.
WS6 Trans Am.

firechicken_3

i have heard that clip before, and i always thought it sounded kinda familiar, now i know why, cuz mine has the pacesetter, or at least had it till i blew a hole in the muffler (got me a flowtech afterburner now , had to shut'er down at full throttle, cuz it stuck cuased a really big bang and back on the topic, headers will make a huge difference in sound quality and tone


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84' Firebird, 305ci lg4, 700R4, 288/292 duration .450/.460 lift,Edelbrock Performer intake, Holley 600cfm 4 barrel, K&N filter, Pacesetter Headers, 3'single exhuast, dual out muffler, no cat,Motive 3.73's and Auburn Posi
1/4mile 15.17sec @ 92.5mph

currently in pieces, for manual swap