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Old 07-10-2019, 06:57 PM   #1
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Damon Owners Club
Join Date: Jan 2019
Posts: 8
Anyone replaced the Catalytic Converter(s) on a 1990-1999 Damon with a 7.4L vortec?

I'm needing to replace the catalytic converter(s) on a Daybreak with a 7.4L vortec engine. Has anyone else had to do this, and, if so, what brand, etc. converter did you use?

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Old 07-11-2019, 01:20 PM   #2
Join Date: Jun 2019
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Im following this because i have a 95 Damon..... In California....Home of smog...

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Old 07-24-2019, 08:28 PM   #3
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Damon Owners Club
Join Date: Jan 2019
Posts: 8
I am also in California. What I have found is this: although the 1999 Damon Daybreak was manufactured after the OBD2 diagnostic system (which began in 1995), it is a pre OBD2 vehicle. GM no longer makes replacement catalytic converters (it takes 2), so what you have to do is go to the California Air Resources Board (CARB) website and look in the pre OBD2 aftermarket parts section for approved converters. There are at least 3 different companies who make CARB approved converters. There is a chart after each approval letter which lists vehicles, look up the Chevrolet p30 (the chassis that the Damon was built on) and the 7.4 liter engine. It will give you part numbers which you can use... I choose Eastern Manufacturing and their #863518 converter which I purchased on Ebay. Hope that helps!
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1999, ace, cat, converter, damon, replace

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