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Old 07-31-2021, 04:04 PM   #1
MoJo Risen
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Default Re: Return of the COPO

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Originally Posted by mike pearson View Post
what class would the 572 inch engine run. Would the be a show down car?
fs/c, fs/d,fs/e at 430 nhra hp 3500 shipping weight.

Should be the first fs/e car to run 2.5 seconds under index at 160mph
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Old 07-31-2021, 04:13 PM   #2
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Default Re: Return of the COPO

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Originally Posted by MoJo Risen View Post
fs/c, fs/d,fs/e at 430 nhra hp 3500 shipping weight.

Should be the first fs/e car to run 2.5 seconds under index at 160mph
At 430 HP it would be a joke when the 427 LS N/A was rated at 470 HP at its inception.
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Old 07-31-2021, 04:15 PM   #3
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Default Re: Return of the COPO

So what class or classes will this new COPO fit ?
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Old 07-31-2021, 04:19 PM   #4
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Default Re: Return of the COPO

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Originally Posted by doglover44 View Post
So what class or classes will this new COPO fit ?
Too fast for Super Comp so must be aimed at Top Sportsman.
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Old 07-31-2021, 11:39 PM   #5
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Default Re: Return of the COPO

TBD

https://www.chevrolet.com/content/da...pecs-stats.pdf
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Old 08-01-2021, 12:30 PM   #6
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Default Re: Return of the COPO

The 572 makes about as much power per cubic inch as the '69 350/255. The 572 makes .023 hp per cubic inch more than the 69 350/255.

Now that is progress using an ECM. Impressive!
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Old 08-01-2021, 05:17 PM   #7
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Default Re: Return of the COPO

We’re those the ones that were recalled for lack of power?
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Old 08-02-2021, 12:34 PM   #8
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Talking Re: Return of the COPO

Guys I started this post to let everyone know that Chevrolet was 'back in the game' - and not to argue over horse powers -yes , I must agree that the 572 is rated by the GM folks a bunch low but you must also agree that all of the 'big 3' have been guilty of this practice over the years .All that plus the horse power is only Chevrolet's number not the official one used and accepted by the NHRA as far as I know so we'll see.

I guess my real point is that since the manufactures are in the game Stock and SuperStock have received more attention than ever and that can't be bad .
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