I want to get free-flowing cats. I have a dual-cat set-up on a 90 F-Bird. What size are the cats? 14" or 18"?
I beleive it's 2.5" in/out, right?
I intend to jet the Dynomax ones from Jeggs.
Any other suggestions? If so please give me a link to a webpage with a good price.I did do my research as far as wich cats are the best. My original ones have 126K on them so just replacing them w/OEM is a good idea in it self,IMHO.
So I don't really need suggstions as far as wich catalitics are THE best.
I mostly just want to kow the SIZE of the replacement cats I should get and the cheapest place to get them.
Thanks in advance, fellas
Mike

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1990 Formula
Factory:TPI-305/Dual Cat(230hp),5 Speed,3.42 rear.
Dealer instaled:Aluminum Drive Shaft
Mods:SLP air foil,K&N Filter, Accel:wires,coil cap,rotor.Hypertech Thermomaster chip,Stat,Fan switch,TES headers,MSD6AL,AFPR(50), Harwood fiberglass hood.
Flowmaster 3" Cat-back exhaust,TB coolant bypass,B&M Ripper shifter, Centerforce dual friction clutch, Ported & Siamesed Plenum matched to SLP Runners w/Edlebrock Base, March Power/Amp Pulleys, Richmond 4.10 gears,265/50/16 BFGoodrich rear tires.

 

Stock ones are 2.5 inch.

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1992 Camaro RS (Auto) 5.0L TBI
-
Performance mods
NOS (125 HP shot), Dynomax cat-back exhaust, Hedman headers, no cat, custom high beam delete ram air w/ K&N, MSD 6A ignition, MSD 8.5mm plug wires, LT1 camshaft
Soon to be installed:
Edelbrock Perfomer TBI intake, B & M 2200 RPM stall torque converter, Trans Go shift kit, World Products Torquer heads, Ed Wright Fast Chip

Audio
Sony Xplod CDX-M610 head unit, Pioneer 2-way 4x6 front speakers, Pioneer 3-way 6x9 rear speakers, 12 inch Pioneer VCCS PRO subwoofer, QLogic sealed box, Kicker ZR360 amplifier, Lightning Audio 1 farad capacitor

Other
Macewen White Faced Gauges/Shift overlay, A-pillar gauges (Phantom oil pressure, Air/Fuel), 180* thermostat, Window Tint, chrome valve covers, xenon headlights

 

Thanks, but what length should they be?
14 inches or 18 inches?or it doesnt matter?
Thanks
Mike

------------------
1990 Formula
Factory:TPI-305/Dual Cat(230hp),5 Speed,3.42 rear.
Dealer instaled:Aluminum Drive Shaft
Mods:SLP air foil,K&N Filter, Accel:wires,coil cap,rotor.Hypertech Thermomaster chip,Stat,Fan switch,TES headers,MSD6AL,AFPR(50), Harwood fiberglass hood.
Flowmaster 3" Cat-back exhaust,TB coolant bypass,B&M Ripper shifter, Centerforce dual friction clutch, Ported & Siamesed Plenum matched to SLP Runners w/Edlebrock Base, March Power/Amp Pulleys, Richmond 4.10 gears,265/50/16 BFGoodrich rear tires.

 

C'mon guys.I know how to research the archives. My Webtv box is very SLOW, that's why I ask.
Can someone help me out, please?
Thanks

 

Oh yeah, I realize the cats are 18s. I'd like some help as far as were to get some reasonably priced aftermarket ones. I'm not looking for a perticular brand name.I was gonna go w/OEM replacements but decided to upgrade. Links to sites and such info is much appreciated.

------------------
1990 Formula
Factory:TPI-305/Dual Cat(230hp),5 Speed,3.42 rear.
Dealer instaled:Aluminum Drive Shaft
Mods:SLP air foil,K&N Filter, Accel:wires,coil cap,rotor.Hypertech Thermomaster chip,Stat,Fan switch,TES headers,MSD6AL,AFPR(50), Harwood fiberglass hood.
Flowmaster 3" Cat-back exhaust,TB coolant bypass,B&M Ripper shifter, Centerforce dual friction clutch, Ported & Siamesed Plenum matched to SLP Runners w/Edlebrock Base, March Power/Amp Pulleys, Richmond 4.10 gears,265/50/16 BFGoodrich rear tires.

 

Get Catco ones. You can get 2.5" ones off eBay cheap, but you can order them just about anywhere. If money is no object, get a Random Technology one.