My car is finally in the shop as I
write this, should be done in the next
couple of days,getting Chrome edlebrock
tes headers, Dynomax High flow cat, and 3" flowmaster exhaust put on!! I can hardly wait!

P.S. A quick question for you guys! My car is a 91 firebird with a TBI 305.. do the 350 motors sound deeper and louder than the 305's with this configuration I have.. or is there much difference, and if there is.. is there, why is that exactly? and what could I do to make it sound more like the 350's? anything?

thanks!
later!
Excited, and nervous!
BlueBird

 

bigger engine, more air, more sound.

------------------
-Tas
'89 Formula WS-6

305, TBI, 700R4, P.A.W. 14x3 open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips, Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248)
Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options

 

What kind of a shop did you take it to have te headers installed. How much did it cost you if you dont mind saying. Thanks

 

I don't think there is much of a sound difference if any. Many people who have heard my exhaust asked me if I had a 350.

------------------
92 Camaro RS, LO3, 5-spd, T-tops

Performance:
K&N Open Air Filter, Edelbrock performer TBI intake, Fastchip Prom, Timing +4 degrees, Centerforce clutch, Xact 8mm wires, SLP 1 3/4" Headers (coated), Flowmaster Catback Exhaust, Richmond 3:42 gears, Torsen HD Posi
Sights & Sounds:
Alpine 8030 Alarm System, Valentine One Radar Detector (How did I ever drive without one?), Pioneer DEH 7450 Head Unit w/6-pack CD changer, Pioneer DEQ 7600 Sound Processor, 2 Kenwood KAC-846 Amps powering 2 12" Pro Red subs, 2 Pioneer 6x9 and 2 MTX 4x6 speakers. Z28 grille w/aftermarket lights, MacEwen whiteface gauges
NEXT UP: TBI & Suspension mods

 

I paid 185 for headers installed and cats installed, i didnt' do it myself b/c i have no time and don't know how to weld, so dont call me a pu$$y
Also, i know a lot of people, so i think thats pretty cheap....and i dunno if thats what you'd pay...

 

Well, I paid 525.00 to have it all
installed. but thats..

1. removing everything, including stock exhaust manifolds etc..

2. installing headers, y-pipe, cat, muffler, exhaust etc..

3. and I had them put all new high performancec spark plug wires maded for headers, and had them install a kit I bought that makes the wires run real neat and organized, like you see @ carshows and stuff.

 

So did you take it to a muffler shop and have them intsall the headers or where did you take it to?

 

I took it to this Auto Clinic called
M&M Auto repair, they are just a auto
repair shop, but they are really cool
there.. their only rule was that I had
to have the CAT or they couldnt do it,
but I wanted the cat anyway, I think
smog laws are only gonna get stricter,
besides, the CAT I chose is a Dynomax High flow cat.. what puny ammount of restriction it does have is probably beneficial for back pressure.

 

How do you figure? Same TPI setup as a 305 except for injectors and Computer.

 

well, he means there is more cubic inch
of block, and a bit more diameter piston chamber etc, bigger better cam than the 305 has.. I know that for a fact atleast.. but
my question was really.. it's not THAT much bigger, so why such a huge difference in tone??? IS it the cam that causes that? or is the firing order different? I heard that the firing order on mustangs is why those 5.o's have that cool rumbly sound they have.

 

Actually my old 305TPI TA sounded pretty damn mean with TES, a gutted cat, dynomax 3" catback, and a mild cam (208*/212* @ .050", .462"/.480"). You really couldn't tell if it was a 305 or a 350 from the exhaust sound. The exhaust note will be slightly different due to the extra cubes, but it has a lot to do with the design of the exhaust and the extent of the mods that have been done to the engine.

------------------
1987 GTA L98 MD8
355, TFS Heads, LT4 Hot Cam
My GTA

The Minnesota F-body Club

 

I believe the cam is definitley the biggest contributor to the exhaust sound. Change to a big cam in a 305 and it will rumble like the big boys!

 

hey hey!! nice to see more IL


hope your part of www.MFBA.org

and im curious, how much did the high flow cat cost you?

------------------
91 FireBird 305 V-8
Edelbrock Catback, Custom Alarm. Fourth Gen Console. i have six cupholders. all for starbucks!
Go|)Created The Earth, And Then Turned Up The Bass.
Here's My Audio Install!

"Honda's FOR ME TO POOP ON!" -Triumph...

 

the cat wasnt much at all..
less than 100 bucks