Duals or Cat-back?
Duals or Cat-back?
Hello. I just bottomed out and the stock exhaust is trashed on my 89 RS TBI. I will be doing a motor swap to a 350 (keeping the TBI) soon, maybe 2 months. My question is, should I slap on a Hooker cat-back (or whatever) system or wait until the motor swap and do headers and a true dual exhaust system? I plan to put headers on with the new 350 as well.
i don't want to spend the $250 on a cat-back, then redo it when i get the new motor in (if it'll help).
any advice? thanks in advance.
i don't want to spend the $250 on a cat-back, then redo it when i get the new motor in (if it'll help).
any advice? thanks in advance.
Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Dont bother with a true-dual setup on a street car, its not worth the money, time, or hassle.
Do the headers and exhaust when you do the engine swap, its much easier.
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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-
Do the headers and exhaust when you do the engine swap, its much easier.
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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-
Kevin covers everything before I can get here. People argue about true duals all the time. If your really THAT worried just install a 3.5 custom catback with your fav muffler thats all = )
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1990 G92 5spd LB9 - 3.42 80,000 miles
Accel Ignition/Wires (8.8mm), Advanced Timing, TB Bypass, Ported and Gasket Matched Plenum, Synthetic Motor Oil, 160 Thermo, TPIS Airfoil, K&N Air Filters, Centerforce I Pressure Plate and Clutch, Edelbrock TES Headers, Dual Cats, Edelbrock RPM Series Catback, Homemade Ram Air, Bosch +4 Platinum Plugs
14.4 @ 94mph w/2.0622 60ft (w/o headers and catback)
14.426 @ 96.19mph w/2.167 60ft(w/headers and catback)
Also newly modded w/o track times:
Holley AFPR, Underdrive Pulleys, KYB Shocks and Struts, Crane Ignition
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1990 G92 5spd LB9 - 3.42 80,000 miles
Accel Ignition/Wires (8.8mm), Advanced Timing, TB Bypass, Ported and Gasket Matched Plenum, Synthetic Motor Oil, 160 Thermo, TPIS Airfoil, K&N Air Filters, Centerforce I Pressure Plate and Clutch, Edelbrock TES Headers, Dual Cats, Edelbrock RPM Series Catback, Homemade Ram Air, Bosch +4 Platinum Plugs
14.4 @ 94mph w/2.0622 60ft (w/o headers and catback)
14.426 @ 96.19mph w/2.167 60ft(w/headers and catback)
Also newly modded w/o track times:
Holley AFPR, Underdrive Pulleys, KYB Shocks and Struts, Crane Ignition
well...the decision was made for me, on my way home from OHare airport tonight, the pipe from the cat to the muffler fell off. quite a nice sound the car makes, but the cop who pulled me over called me 'sparky'. luckily i was only 2 miles from home and he gave me a friendly escort. i'll be ordering the catback since i need the car, looks like the duals will have to wait for another car. maybe the 1990 caprice wagon!
thanks for the advice...ric
thanks for the advice...ric
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