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Old Oct 11th, 19, 10:55 PM
Elvis Elvis is offline
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Default Stock power ratings?

Anyone know what the HP & torque rating was for a regular ol' 396 & 427 was?
I'm talking about something you might've pulled out of a dump truck, NOT an L78 or similar.
I used to know, but have forgotten and all the 'net wants to talk about are muscle car engines.

Thanks,
Elvis
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Old Oct 11th, 19, 11:56 PM
62 NovaWagon 62 NovaWagon is online now
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Default Re: Stock power ratings?

This might help..

https://en.wikipedia.org/wiki/Chevro...g-block_engine
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Old Oct 12th, 19, 12:34 AM
Aukai Aukai is offline
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Default Re: Stock power ratings?

LOL the dump trucks probably would have had tall deck 366, or 427 engines. Not sure where the break was. In later years I know the 1 ton trucks had the "passenger type BBC"
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Old Oct 12th, 19, 01:00 AM
Big Dave Big Dave is offline
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Default Re: Stock power ratings?

Power ratings were flexible. When the 396 L78 was introduced it was rated at 425 horsepower. That shocked the insurance companies that threw a surcharge on the cars with that engine. So Chevy reduced the rated horsepower to 375 by testing the motor at a lower RPM. Same motor, no change in parts just a different decal.

Another example was the 275 horse 327 getting an upgrade to 300 horsepower because Chrysler had a 300 horse 392 Hemi that was competing with the Impala for customer's money. Same motor, different decal.

The NHRA rated all cars by trap speed and comparing the weight to list their true horsepower (they could do this thanks to Newton's F=ma formula). If you raced in Super Stock you were handicapped by the NHRA horsepower not the decal. You can look on line for the NHRA rated power for every car over the years.

Big Dave
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Old Oct 12th, 19, 03:15 AM
Elvis Elvis is offline
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Red face Re: Stock power ratings?

Quote:
Originally Posted by 62 NovaWagon View Post
You know, I looked there before I posted my question, too....
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