Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - 1986 Catalytic converter with 155,000 on it
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Old 02-07-2004, 05:51 PM
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All depends on how the vehicle was driven. You can find hi mileage cars that have mostly highway miles and the cat lasts forever. Stop and go driving plugs them up, they don't heat up enough to burn out all the crap.

Those large flat GM converters were quite restrictive. The smaller honeycomb ones are much better, and cheaper.

The Summit ones are supposed to quite good.
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