Greetings to all flks!
i have a 1986 lg4 trans am and want to remove the catalyst. I would like to know which one you use and where I could find it, there is no problem with the emission here in Spain it is not prohibited. thanks for the help, then I'll give you photos of the car

 

Hello Henry79. Welcome aboard.

So you are looking for a pipe to replace the catalytic converter?

Or are you looking for a replacement converter?

 

Id just put a remote cutout there for fun.

 

I am looking for a suppressor, a part that does not do the function of the catalyst or that does not limit the vehicle like the catalyst does.
Thank you

 

A modern, monolith style catalyst isn't a significant limitation on most reasonably powered cars, it's not more restrictive than a straight-through glass-packed muffler if even that. Yes, if you're trying to force 500hp worth of exhaust through a 2.5" converter it will be a restriction, but a 2.5" muffler will be a bigger restriction.

 

thanks but, i need the way to delete o supress the catalytic converter....you know where i can find that piece?

 

Depending on the model, a piece of pipe about 2' long and between 2.25 and 2.75" OD.

 

ok, so i need where i can search the items for a 1986 trans am lg4 305 cu inches

 

Henry,

In this country, you used to be able to buy a "test tube", which was designed to bolt exactly in place of the catalytic converter. But I don't believe those are available anymore. They were sold under the guise of testing, to see if the catalytic converter had plugged or otherwise failed. But more often than not they were used to illegally replace the converter on a permanent basis.

What Mark is suggesting above is that any competent exhaust shop with a pipe bender can make you that piece of pipe and weld some flanges onto it (if applicable). And that is what I would recommend as well if you want to eliminate the converter.

 

I think there might be a slight misunderstanding of terms. “Supress” is not the same as “delete”. In terms everyone here would understand your want to REMOVE the converter.

If you want to remove the converter then examine the rest of the exhaust system for corrosion. If it is in good shape then cut out the converter and weld in a piece of the same diameter pipe to replace the converter. If you don’t have access to welding equipment then locate a auto repair shop that can do the work for you. The pipe is nothing special, just aluminized steel. There probably is a air injection line you will also need to disconnect as well.

if you have corrosion issues then you should look into replacing all the rusted parts. Web based companies like Summit Racing, Jets, CARiD have products you can order. They also have modern replacement converters including 3” inlet size converters that you can purchase as well. It might be more cost effective to have a local shop that can fabricate a system make one for you rather than ship something in from the US.

 

thanks a lot, i will do it that.