Chevrolet Service Bulletin No 82-T-58

There is a sticker under the hood of my 81 camaro (267 V8) that says:
This vehicle has been modified according to Chevrolet Service Bulletin No. 82-T-58.
Anyone know what this service bulletin is about?
Thanks Rick M
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RickM wrote:

Searching Google for Chevrolet Service Bulletin No. 82-T-58 only came up with this. I'd recommend calling your local dealer and asking them to look it up for you.
http://www.angelfire.com/ny2/82Monte/TSB.html
SERVICE BULLETIN NUMBER: 82-T-58 Bulletin Sequence Number: 157 Date of Bulletin: July 1982 NHTSA Item Number: 62496 Make: Chevrolet Model: Monte Carlo Year: 1982 Component: Exhaust System: Converter Summary: 1982 DUAL BED BEAD CATALYTIC CONVERTER REPLACEMENT PROCEDURES 1982 B, F, AND G CARS WITH 3.8L, 4.4L, 5.0L AND 5.7L ENGINES
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Alldata only goes back to 1982. You'd have to find the old 1981 and older Chevy bulletins. However, as I remember, there were catalyst changes in some of those vehicles.
The vehicle had the campaign done and the sticker is affixed by law. Joe--ASE Certified Parts Specialist & 10th Ann.Club Tech Director '80 Carousel Red Turbo T/A, 26k orig. '79 "Y89" 400/4 speed 10th Ann. T/A, 57k orig '84 Olds 88 Royale Bgm 2 dr, 307 "Rocket" (lol), 141k and still going.... '80 T/A project car...
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