exhaust system

richard lepech

Junior Member
If i want to take off the original exhaust system on my 1981 full size blazer and install headers do i have to reinstall the converter back into system. thank you all for the help


Senior Member
Glenview, Ill.
Yes you have to install a "cat" back into the system to make your truck "street" legal. You will have to make sure that the new headers meet emission requirements too, such as having ports for the air tubes for your smog pump. Do you have to have your truck emission tested ? Here in Illinois they will sometimes check under the hood and truck to see if anything is missing or changed from what their system ID tells them to look for. (such as missing converters; air pumps & tubes etc.) Find yourself a good legal header and free flowing converter & exhaust system, you'll save yourself a few headaches down the road.

Top Forums