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Username Post: Replacing Catalytic Converters 95 Caprice
Bill K.b 
Senior Member
Posts: 4517

Loc: upstate NY
Reg: 10-24-05
04-06-21 10:22 PM - Post#2817627    
    In response to Highlander1

Generally these only get replaced when rusted out or clogged up. And if you have no emissions inspection in your state you can just knock the guts out and put them back.

As to how to do it, it's just unbolting some very rusty/stubborn bolts and hoping your pipes mate up to whatever replacement you bought.

On the 1995 G30 I once had, it came with a cat and a broken pipe and I discovered for some reason it had the headers for a pickup and would use a much more expensive 1-piece Y and cat. Or I could change the manifolds and use a $120 Y-pipe and the cat I had. For the $20 at the junkyard I changed the manifolds.
Those who can, do. Those who can't, criticize it on the internet.

Driving 2002 Express 2500
2002 Express 2500 extended
1988 G20 conversion
1993 GMC 3500 dually

Plus cars for swap and sale
& yes, I once tried a frame swap on a 51 Chevy.

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