I am going to buy a new exhaust for my TPI IROC Z I am going to a 350 in about 6 months and need something that will flow enough for a cammed 350hp 350. Flows, SLP, Edelbrock??? Any other suggestions???

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TPI 305,
Gutted airboxes,
gutted MAF,
K&N filters,
Corvette Servo.
14.9@93mph

"Speed kills, wanna live forever, drive a Ford."

 

I like Dyno-max, but if you like it loud then look else where.

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87 Z28 305 TPI, Auto, 2.73, Gutted air boxes, K & N fillters, Dyno Max 3" cat back, Accel 8.8 mm spirals, Accel cap and rotor, Accel coil, rapid fires, and 160 Stat.
Best 15.414 @ 87.47

 

Flowmaster!!

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Looking For:

87 IROC-Z 350 TPI
84 TRANS AM 305 H.O.

 

ATR is the only way to fly. sounds mellow till you get on it, then it screams. They claim it will flow enough on a TTA to go 9's. I've seen low 10's on other cars at the GS Nat's, so it's the only exhaust I use. Their website is www. atrperformance.com. These folks know their stuff. Better than Borla price-wise, but the same quality.

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Torque is KING!
All pray to the god of grunt! When ye thinkth ye has been whupped than shall ye meet the mighty Buick! For none can surpass her majestic power, and all will yet try. All pray to the god of grunt. For the King of torque has arrived!
1. 82 Camaro+ 1. 455" Buick+ 1. N2O plate = YOUR WORST FRIGGIN NIGHTMARE!!!
Da Problem Child
ProbChldR@aol.com

 

Whatever you do, DON'T buy an edelbrock catback! The fit is TERRIBLE and it made my 91Z sound like a generic 5.0 mustang. PLUS, one of the tailpipes was LONGER than the other...looked like crap from behind.



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87 IROC-Z, 5.7, auto, 3.27, leather, !cat, Holley fpr, K&N'S, SLP 1-3/4" Jet-Hot coated headers, SLP .218/.224 .495/.502 cam, Comp 1.5 roller tip rockers, $uperPITAram, Edelbrock lower intake, Holley 52mm tb, Dynomax\Flowmaster catback. Coming Soon(?)- Fasttrack/Accell DFI

1989 Pontiac 20th Anniversary Turbo Trans Am - 161,000 miles, !cat, 9" K&N

 

I agree with two above - the edelbrock cat-back made my IROC sounds kind of weird, I really don't like it. My formula has a dynomax and as stated, is not very loud. I like the sound of the slp, just not the single side exit look.

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87 IROC, 350/5 speed. gmpp 350, vortec heads w/some work, XE268, 1.5rr's, 650dp, rpm intake, MSD ing., ect.
89 formula, L98.

 

Flowmaster is the best way to go... if you have the extra cash, borla is always number 1 in my book.

 

If you want to spend a lot of money, go Borla. If you want a nice (lesser priced) system, go Hooker Aerochamber.

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Luke
94 Saturn SL (1.9L)
86 Camaro Berlinetta (5.0L) *TPI 350 In Progress*
Berlinetta Board Mod @3rdgen.org
Non-Tech Mod @LG4 Performance Team

[This message has been edited by sven86berlinetta (edited December 12, 2000).]

 

The best by far other than a Banks power pack system, which is in limited availability, is a MAGNA FLOW !! ! ! Ask Willie !



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Bob R
(ROCN-Z)
89 IROC L98

 

i have 2.5 dynomax catback(about $150)from jegs.for the price you can't beat it.a year after i bought that i put a flowmaster on it and it sounds a hell of a lot better.DON'T GET BORLA,DON'T WAIST YOUR $.

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1991 banditt2 firebird #130of#600

 

the Hooker Cat-back sounds very good. it sounds like our cars should of sounded like out of the dealer. its got that muscle car sound we need. nice and rumbly at idle. and it just roars at WOT and even if you dont push it you can still hear that muscle car sound. it gets loud at 2000 rpms and about 3000 rpms(if you push it) my free way rpm is 3000 rpms at 70 and i cant really hear it. i think it the perfect sound for our cars. just my 02

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RED82TA5.7L

1982 Pontiac Trans Am
Cross-Fire Injected 5.7l V8
Eldebrock Headers, 3" Hooker Cat-Back, duel outlet with quad tips.
Mods: 1.6 Proform Roller Rockers, electric fan, Corvette 5.7L computer chip, K&Ns.
Audio: JVC Kameleon CD deck, Jenson 4x6 front, Eclipes 6x9 rear, 2 10" mTx T4000 powered by a mTx 200watt amp.

 

I have a flowmaster on my car and I like it alot especially at 2500 on up. I took off the cat and have a 3 inch off road pipe there instead. If cash is a issue just buy the muffler and have a muffler shop install it. I'm not for sure in your case but my car came with like 3inch all the way back. If the exhaust is rusted I would by the cat back kit. Especially if you want new trailing arms. Homemade trailing arms don't look right when their not manderal(2 and 1/2inch in ALL places) bent. If I was to do it all over again I would get a catback system that was a little louder at low RPM's especially if you just like to putt around town because the mustangs flowmaster sounds tuffer than the fbody's exhaust at low RPMs.