The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Closed Thread
 
Thread Tools Display Modes
Old 11-18-2008, 07:50 PM   #1
pkbinplano
pkbinplano
 
pkbinplano's Avatar
 
Join Date: Nov 2002
Location: Plano Texas
Posts: 370
Hypothetically speaking

What would be involved in draining the stock cat on a 84 ? As I understand they are full of beads and there is a plug on the bottom. Hypothetically speaking mind you as this is very illegal. Curiosity kills the cat. LOL
__________________
http://www.picturetrail.com/gallery/...7496&members=1
84 chevy silverado aka The Bananna Boat
pkbinplano is offline  
Old 11-18-2008, 07:59 PM   #2
Jonboy
Slots go on anything!
 
Join Date: May 2003
Location: Richardson, TX
Posts: 5,957
Re: Hypothetically speaking

strictly hypothetically, I have been told that one might unbolt the exhaust from behind the cat, and physically alter (by way of a hammer and pipe) the substrate inside. You should then be able to start the vehicle, and, hypothetically, all of the material should come out of the inside. Hypothetically.

There are different kinds of converters, most use a honeycomb type of material in them, and some use beads. I don't think the plug you are referring to is a drain plug, though. Also, just switching to a high flow aftermarket cat may help you get rid of tha huge, heavy one that resides on your truck now, not pose a restriction, and be legal. Besides, if it is an 84, you are on the edge of having to pass smog tests here anyhow. (24 years old and newer, with a rolling date).
Jonboy is offline  
Old 11-18-2008, 11:43 PM   #3
Square84
I don't think these pills work
 
Square84's Avatar
 
Join Date: Apr 2008
Location: burkburnett,Tx
Posts: 626
Re: Hypothetically speaking

magnaflow makes a 3" highflow cat for $70 or so.in plano do they actually look for the cat? in wichita falls there is no emissions testing they dont pop the hood or anything as long as the lights and horn work your good.
__________________
SQUARE84
90 SUBURBAN
Square84 is offline  
Old 11-19-2008, 12:30 AM   #4
Liz
Catchy title goes here..
 
Liz's Avatar
 
Join Date: Mar 2002
Location: Rockwell, NC
Posts: 39,737
Re: Hypothetically speaking

closed...
Liz is offline  
Closed Thread

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 06:30 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com