Catco Catalytic Converter
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iTrader: (1)
Joined: Jun 2000
Posts: 266
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From: Bow, WA
Car: 1989 Firebird Formula 350
Engine: 5.7L TPI
Transmission: 700R4
Axle/Gears: Borg Warner 3.27
Catco Catalytic Converter
Does Catco make a direct replacement catalytic converter for my '89 Firebird Formula?
Senior Member
Joined: Sep 2000
Posts: 681
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From: Hamilton, NJ
Car: 88 Formula, 04 CTS-V, 06 Commander
Engine: 305 TBI, LS6, 4.7 V-8
Transmission: 5 spd, B&M Short Throw
My exhaust shop told me to watch out which high-flow cat you put on. They said that some 3 inch in and out cats are no good because while the inlet and outlet are 3 inches, the tubes internally drop to 2.5 or so, thus making the 3 inch tubes useless. Anyone heard of such a thing?
Supreme Member
Joined: Jul 2000
Posts: 1,341
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From: Where the chicks absolutely LOVE the V-8 rumble!
Car: 92 RS - Fully Restored w/Custom Int
Engine: LO3 with some mods
Transmission: T-5
Axle/Gears: 3.42 Richmond
My 3" cat was just that....3".....all the way through.
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TGO Supporter
Joined: Oct 2000
Posts: 1,231
Likes: 0
From: Wilmington NC
Car: C1500
Engine: 350
Transmission: 700r4
Axle/Gears: 2.73
TGO Supporter
Joined: Oct 2000
Posts: 1,231
Likes: 0
From: Wilmington NC
Car: C1500
Engine: 350
Transmission: 700r4
Axle/Gears: 2.73
I don't care about fab work, it's gotta happen anyway. I'll have a 3 inch y-pipe from edelbrock. I'll have to get the end of my Hooker I-pipe cut off anyway, because it narrows down. I can live with fabricated mounts as long as I have all of my original parts intact when they come off the vehicle.
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