Do i have dual CATS?
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Junior Member
Joined: Mar 2004
Posts: 60
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From: Bloomingdale NJ
Car: 1989 IROC-Z
Engine: 350
Transmission: 4 speed auto
Do i have dual CATS?
hi, i just won the bid for a 1989 iroc camaro on ebay. it is equiped with the 350 motor and the stock trans. i was wondering how i can tell if i have the dual catalitic converters (sorry for spelling i am in a hurry lol). i dont have the car yet, because i couldnt get it this weekend. is there anyway from the vin, will it tell there. thanks for your help, i am cant wait to be a proud camaro owner!!!!! albert III
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Joined: Apr 2003
Posts: 1,751
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From: Bonner Springs, KS
Car: 1995 Corvette
Engine: LT1
Transmission: 6 spd Manual
Axle/Gears: Dana 44, 3:45:1
If N10 is in the RPO codes, it should have them...
Last edited by thirdgen88; Mar 2, 2004 at 09:30 PM.
Thread Starter
Junior Member
Joined: Mar 2004
Posts: 60
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From: Bloomingdale NJ
Car: 1989 IROC-Z
Engine: 350
Transmission: 4 speed auto
thanks!
hey thanks for the help and quick responses. i have yet to see a picture of the rpo code, so i guess thats the easiest way, so when i get a pic of that, i could find out then. thanks again albert III
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Joined: Nov 2003
Posts: 85
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From: Decatur, In
Car: 89 IROC
Engine: 5.7 TPI
Transmission: 700R4 w/ transgo kit
Originally posted by llvll4l2c91350
pretty sure all the 350s starting in 89 got the dual cat setup.
pretty sure all the 350s starting in 89 got the dual cat setup.
Supreme Member
Joined: Aug 2001
Posts: 2,136
Likes: 2
From: Costal Alabama
Car: 1989 Iroc-Z
Engine: 350, ZZ4 equivalent
Transmission: Pro-Built Road Race 700R4
Axle/Gears: 3.23 Dana 44
Originally posted by llvll4l2c91350
pretty sure all the 350s starting in 89 got the dual cat setup.
pretty sure all the 350s starting in 89 got the dual cat setup.
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From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
If its a single cat, then you're cursed with the dreaded 2.77 9-bolt rear end.
Does it have t-tops? If so, then you know its a single cat car, as well.
Does it have t-tops? If so, then you know its a single cat car, as well.
Thread Starter
Junior Member
Joined: Mar 2004
Posts: 60
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From: Bloomingdale NJ
Car: 1989 IROC-Z
Engine: 350
Transmission: 4 speed auto
If its a single cat, then you're cursed with the dreaded 2.77 9-bolt rear end
yes it does have t-tops, so that means it has the single cat?
albert III
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From: Severn, MD.
Car: '88 T/A and '90 T/A
Engine: LB9/383
Transmission: T5/700R4
I've seen plenty of ttop cars with dual cats.
Don't worry about the 9bolt. It's a good rear, but the 2.77's will suck. A good majority of the L98 cars came with 10 bolts anyway, so don't worry about it until you get the car and find out what you've got.
Don't worry about the 9bolt. It's a good rear, but the 2.77's will suck. A good majority of the L98 cars came with 10 bolts anyway, so don't worry about it until you get the car and find out what you've got.
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Joined: Jan 2003
Posts: 33
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From: Keyport, New Jersey
Car: 89 Iroc
Engine: 5.7 liter (L98)
Transmission: TCI 700r4
I have a 89 iroc that has t-tops and had a 2.77 rear and came with single cats. Swapped the rear for $100 to a 3.27 9 bolt posi.
There itsn't that much a difference at only 10hp. between single and duel cats.
There itsn't that much a difference at only 10hp. between single and duel cats.
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