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Old 07-30-2021, 09:20 PM   #43
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Originally Posted by Aqua Blue RS/SS View Post
Exactly!

Man, a 572 copo! Thatís bad ass. Personally i think itís even more cool that they are producing more than 69. Itíll be interesting to see what the power figures end up being along with ETís etc.
That 572 should have way more than 430HP. The 427 beats it by 40. Thatís A LOT of c.i. Youíre wasting in my opinion. Iíd imagine they could pull off about 725 NA HP with that. But excellent cars no doubt
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Old 07-30-2021, 09:21 PM   #44
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That 572 should have way more than 430HP. The 427 beats it by 40. Thatís A LOT of c.i. Youíre wasting in my opinion. Iíd imagine they could pull off about 725 NA HP with that. But excellent cars no doubt
Iíd bet that by the time it gets to production thereís a lot more there than 430. I agree seems like a ton of lost potential.
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Old 07-31-2021, 08:42 AM   #45
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Originally Posted by Wizard1183 View Post
That 572 should have way more than 430HP. The 427 beats it by 40. Thatís A LOT of c.i. Youíre wasting in my opinion. Iíd imagine they could pull off about 725 NA HP with that. But excellent cars no doubt
ďStandardĒ 572 is about 620HP with a single 4 barrel.
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Old 07-31-2021, 11:56 AM   #46
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That 572 should have way more than 430HP. The 427 beats it by 40. Thatís A LOT of c.i. Youíre wasting in my opinion. Iíd imagine they could pull off about 725 NA HP with that. But excellent cars no doubt
It's been adjusted for the NHRA rules or something, just a bit of a de-tune on the engine is what I read.
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Old 07-31-2021, 12:12 PM   #47
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It’s just the NHRA horsepower rating, the apply some kind of factor to it and it’s not close to the actual horsepower produced.

https://www.motortrend.com/how-to/16...ro-ls7-engine/

“Straight from GM, the COPO LS7 is no ordinary LS7. Although GM’s official horsepower rating of 425 is supposed to make people feel all nostalgic, the figure is completely bogus. “The 427 big-block in the original 1969 COPO Camaro was rated at 425 horsepower. That rating was legit, and after blueprinting the motor and bumping up the compression ratio, they made 575-600 hp,” Judson explains. “Today it’s different. GM just dreams these hp numbers up. The COPO LS7 is rated at the same 425 hp as the original ’69 COPO Camaro, but it actually makes 730-740 horsepower straight from GM.””
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Old 07-31-2021, 02:29 PM   #48
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ďStandardĒ 572 is about 620HP with a single 4 barrel.
The ďraceĒ one which I canít imagine not being used is rated at 720hp. If the 427 and supercharged 350 are rated where they are and putting the times down that they are, can you imagine what this beast would do?
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Old 07-31-2021, 02:53 PM   #49
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The ďraceĒ one which I canít imagine not being used is rated at 720hp. If the 427 and supercharged 350 are rated where they are and putting the times down that they are, can you imagine what this beast would do?
With the Efi Iím thinking it could easily be 850-900+ but the torque is gonna be insane
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Old 07-31-2021, 02:57 PM   #50
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But what I want to know is, would it fit in a 5th gen?
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Old 07-31-2021, 03:34 PM   #51
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But what I want to know is, would it fit in a 5th gen?
Anything is possible with a welder, time and money.
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Old 07-31-2021, 03:38 PM   #52
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But what I want to know is, would it fit in a 5th gen?
It would yes. Question is how will you make it run with the car? It’s not plug n play lol. Lotta money. But you can!


Thanks for setting the record straight on the 572 guys. I figured something seemed off on those HP numbers.
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Old 07-31-2021, 03:46 PM   #53
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Originally Posted by Wizard1183 View Post
That 572 should have way more than 430HP. The 427 beats it by 40. Thatís A LOT of c.i. Youíre wasting in my opinion. Iíd imagine they could pull off about 725 NA HP with that. But excellent cars no doubt
That 430 is the nhra class rating. Should be minimum of around 800 HP. Possibly 850 maybe even 900?
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Old 07-31-2021, 04:20 PM   #54
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It would yes. Question is how will you make it run with the car? Itís not plug n play lol. Lotta money. But you can!


Thanks for setting the record straight on the 572 guys. I figured something seemed off on those HP numbers.
I would put all the sensors on it from the LS and have the intake drilled for port injection and use a 4 barrel throttle body or one of those new big single blade throttle bodies that fits on a 4 barrel intake. And then I would find a way to make a distributor-less engine out of it and mount the coil packs on and run it with coil on plug like the LS. Of course you would have to change out the injectors and fuel pump for it to actually run. Anyway that's what I would try to do 😄
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Old 08-01-2021, 07:05 PM   #55
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Originally Posted by morepowerjoe View Post
I would put all the sensors on it from the LS and have the intake drilled for port injection and use a 4 barrel throttle body or one of those new big single blade throttle bodies that fits on a 4 barrel intake. And then I would find a way to make a distributor-less engine out of it and mount the coil packs on and run it with coil on plug like the LS. Of course you would have to change out the injectors and fuel pump for it to actually run. Anyway that's what I would try to do ��
Is the block able to take the sensors? That’s what was in my mind. If it does? Swap it to EFI or what not and it’ll be even better. I just figured 725 on a 4bbl is sufficient for the c.i. Not saying it can’t go beyond that. Lol

And I don’t know NHRA classification. Just seemed off that a bigger engine was producing less HP….
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Old 08-01-2021, 07:11 PM   #56
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Is the block able to take the sensors? Thatís what was in my mind. If it does? Swap it to EFI or what not and itíll be even better. I just figured 725 on a 4bbl is sufficient for the c.i. Not saying it canít go beyond that. Lol

And I donít know NHRA classification. Just seemed off that a bigger engine was producing less HPÖ.
It's nothing that couldn't be done. You can get an intake drilled for port injection. And as for a carb on that engine I would think you could run a 1000 cfm carb.
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