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Old 01-29-2023, 09:39 PM   #1
Stan Weiss
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Default Re: COPO, Drag-Pak, CJ II, (FX) Secrets

I maybe wrong be wasn't AMC the first to offer ported heads?


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Old 01-29-2023, 09:59 PM   #2
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Default Re: COPO, Drag-Pak, CJ II, (FX) Secrets

I guess the argument has now turned to interpreting the rules?

Every turn-key late model factory car came with a 9" rear and aluminum center section. The 2008-up rule came when racers started converting the factory cars to their production version around 2015.

Factory ported heads were in the guide before 2008.
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Old 01-29-2023, 10:50 PM   #3
Mark Yacavone
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Default Re: COPO, Drag-Pak, CJ II, (FX) Secrets

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Originally Posted by GUMP View Post
Every turn-key late model factory car came with a 9" rear and aluminum center section. The 2008-up rule came when racers started converting the factory cars to their production version around 2015.

.
You are correct there, and there's more that they didn't have to change back from the COPOs
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