How To on remove your catalytic converters

[cammerfe]

Cat Removal

Two studs hold the cat to the exhaust manifold. I haven't yet tried, but would suppose that you can get to the nuts with about two feet of socket extension, a universal or two, and a breaker bar to turn the whole gizmo. I'd try to liberally hit the nuts/studs with PB Blaster or equal. When I took the pipes off the lower end of the cats---put in a Magnaflow cat-back system---, I just removed the clamps and banged a few times with a rubber mallet. An alternative would be to use a rod to knock the stuffing out of the cat. It's brittle and breaks up without too much trouble. You'd need an SCT or equal to get past the sensors. After they're cleaned out, just leave them in place.
KS

 

[TDUB]

Two studs hold the cat to the exhaust manifold. I haven't yet tried, but would suppose that you can get to the nuts with about two feet of socket extension, a universal or two, and a breaker bar to turn the whole gizmo. I'd try to liberally hit the nuts/studs with PB Blaster or equal. When I took the pipes off the lower end of the cats---put in a Magnaflow cat-back system---, I just removed the clamps and banged a few times with a rubber mallet. An alternative would be to use a rod to knock the stuffing out of the cat. It's brittle and breaks up without too much trouble. You'd need an SCT or equal to get past the sensors. After they're cleaned out, just leave them in place.
KS

It won't pass emissions though will it?

 

[Frogman]

Nope

 

[TDUB]

Lol then what's the point unless its a track car?

 

[NYC LS8]

Mark VIII guys must be bored.

 

[Frogman]

Lol then what's the point unless its a track car?

I'll show you the point of it next time I'm in your neck of the woods, T. Could even be tomorrow.

Edit: Yes. I are bored.

 

[kustomizingkid]

I'm bored too... its ok, i don't mind being an ass in the LS forum too... I've got the time.

 

[cammerfe]

Test passing

It won't pass emissions though will it?

Some of us live in the less civilized parts of the country (Metro Detroit). We don't have any annual testing. But when we did, I just made it a point to know the owner of a testing site. He always had a similar car to test with my identification entered.
KS

 

[1LoudLS]

the only good thing about michigan is no emissions test

 

[cammerfe]

You don't even like A2?
KS

 

[exceptionaLS]

so the cats will slide off after removing the 2 bolts?

 

[cammerfe]

Very tight in the cat area, and I've not had them off. From what's visible from the bottom looking up, there's about a foot of pipe between the manifold and the cat, and an even shorter piece below the cat. Both these ends are welded to, and part of, the cat.
KS