unique question on exhaust :)
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Joined: Oct 2001
Posts: 290
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From: Victoria, BC
unique question on exhaust :)
okay guys here's a debatable question for you.
okay i just bought a 92 Z28 350 TPI auto about two months ago. Now the exhaust on it SUCKS! It was VERY bad when I bought it muffler was all rusted through there was a giant hole in it heldup with coat hanger wire it was just BAAD! LOL. now, stop laughing, it gets better.
okay the exhaust fell off the other day... it was hanging by a tiny piece of metal so I took it right off at or around the rear differential.
Now is it possible I would LOSE power because of this? cuz I am pulling dead even with stock 5.0 mustangs and i'm a 350 TPI... mind you I have a vacuum leak to fix and new plug wires etc. to install....
well... would I be losing power cuz of this?
thanks
garett
okay i just bought a 92 Z28 350 TPI auto about two months ago. Now the exhaust on it SUCKS! It was VERY bad when I bought it muffler was all rusted through there was a giant hole in it heldup with coat hanger wire it was just BAAD! LOL. now, stop laughing, it gets better.
okay the exhaust fell off the other day... it was hanging by a tiny piece of metal so I took it right off at or around the rear differential.
Now is it possible I would LOSE power because of this? cuz I am pulling dead even with stock 5.0 mustangs and i'm a 350 TPI... mind you I have a vacuum leak to fix and new plug wires etc. to install....
well... would I be losing power cuz of this?
thanks
garett
Thread Starter
Member
Joined: Oct 2001
Posts: 290
Likes: 0
From: Victoria, BC
OH by the way my Hooker Aerochamber cat back will be here in 4 days.
i'm just curious if I will gain hp with the cat back since it's replacing basically an "open" exhaust.
thanks
garett
i'm just curious if I will gain hp with the cat back since it's replacing basically an "open" exhaust.
thanks
garett
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
No, you aren't losing power because of "not enough backpressure".
If anything, the open factory intermediate pipe is providing more restriction than a good aftermarket cat back w/muffler.
A stock 350 TPI running even with a stock 5.0 is about right. Want to get 48 cubes in front of him? Headers, cam, runners, tuning.
Fix your vacuum leak.
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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4, 2300 stall TC. Ported World 305 heads, Crane PowerMax 2050 cam. ZZ3/4 intake, oil pump, pan & baffle. Accel HEI SuperCoil & module. Hooker 2055 headers, 3" Catco cat & 3" catback w/dual-opposite Flowmaster 80. 2.93 limited slip. Spohn SFCs waiting to be installed. AMSOIL syn lubes bumper-to-bumper. Daily year-round driver. Best ET, speed TBD...
57 Bel Air, my 1st car. '66 396, 9.7:1 forged TRWs, Weiand Action+, Holley 750VS w/4150 conversion, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 700 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).
If anything, the open factory intermediate pipe is providing more restriction than a good aftermarket cat back w/muffler.
A stock 350 TPI running even with a stock 5.0 is about right. Want to get 48 cubes in front of him? Headers, cam, runners, tuning.
Fix your vacuum leak.
------------------
82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4, 2300 stall TC. Ported World 305 heads, Crane PowerMax 2050 cam. ZZ3/4 intake, oil pump, pan & baffle. Accel HEI SuperCoil & module. Hooker 2055 headers, 3" Catco cat & 3" catback w/dual-opposite Flowmaster 80. 2.93 limited slip. Spohn SFCs waiting to be installed. AMSOIL syn lubes bumper-to-bumper. Daily year-round driver. Best ET, speed TBD...
57 Bel Air, my 1st car. '66 396, 9.7:1 forged TRWs, Weiand Action+, Holley 750VS w/4150 conversion, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 700 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).
Hooker claims better flow than open pipe. It will sound better and more than likey run better with the cat back. you should be able to beat a stock 5.0, but one with mods will get you unless you have mods. I can out run stock 5.0 and 4.6 stangs easily on the street in my Jeep Grand Cherokee 5.9 Limited...lol
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'92 RS Heritage Pkg, 305TBI,automatic... CURRENT MODS..Melling 207:214 roller camshaft, Large snorkle air cleaner w/ K&N filter, Injector spacer, ACCEL super coil, Taylor wires,power pulleys, 6* timing advance, flowmaster catback exaust, hollow cat, '95 Z28 exaust tips, P245/50/ZR16 tires, Edelbrock strut tower brace, Edelbrock panhard rod, frt & rear urethane swaybar end links, urethane sway bar bushings, subframe connectors, urethane track bar bushing, KYB shocks, F41 factory performance handling package,Z28 tranny centrifical governor, and more to come soon!
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'92 RS Heritage Pkg, 305TBI,automatic... CURRENT MODS..Melling 207:214 roller camshaft, Large snorkle air cleaner w/ K&N filter, Injector spacer, ACCEL super coil, Taylor wires,power pulleys, 6* timing advance, flowmaster catback exaust, hollow cat, '95 Z28 exaust tips, P245/50/ZR16 tires, Edelbrock strut tower brace, Edelbrock panhard rod, frt & rear urethane swaybar end links, urethane sway bar bushings, subframe connectors, urethane track bar bushing, KYB shocks, F41 factory performance handling package,Z28 tranny centrifical governor, and more to come soon!
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