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97 D'Elegance=275hp, not 300?


bigjayzway

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Okay. I was reading the owners manual on my wifes 1997 Deville D'Elegance. It states the D'Elegance is only 275 horsepower, but the STS is 300+.

What makes this difference? Is there really one? How do I change it?

Life is too short to grow up!

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You don't. At least, not without a cam and final drive ratio change. NOT very practical. Let's not forget the 300hp transmission algorith. The PCM won't tolerate that change.

The 275hp engine has a final drive ratio of 3:31 or thereabouts. The 300hp thing is about 3:74 or so and has a tighter suspension. Not an authority here, just giving you loose numbers. There's a different shifting algorithm for the 300hp transmission also.

DeVille and STS are two VERY different cars!

Regards,

Warren

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Okay then, I was just wondering what it was that made them so different.

Thanks Warren!

Life is too short to grow up!

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bigjayzway,

There really were 2 versions of the 4.6 Northstar engine for quite some time. There are are even more versions now with the RWD SRX/XLR and the AWD STS-V.

The 275hp version has more off the line torque and differant gearing. This engine has slightly better drivability and economy

The 300hp version has more top end hp and a differant gear ratio. This engine is "sportier".

You can ignore the 25hp differance and enjoy the ride or change engines, transmissons and perhaps some electronics.

In most driving situations, 25hp dosen't mean too much. Perhaps a fraction of a second in reaction time would make up for it. This is something that stoplight racers forget - that the other guy in the Corvette they "smoked" - didn't even realize it was a race... :D

If you really believe that another 25hp would make all the differance and you are willing to invest a lot of money. Then first - simply raise your tolerance for risk, (without endangering others) and put all 275hp of your wife's car on the road ...hard... and scare the he** out of yourself for a bit. Maybe 275hp will seem quite enough. :rolleyes:

Good luck :)

Add power to leave problems behind. Most braking is just - poor planning.
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LOL...LOL...

I am very happy with the car, as she is. I just wanted to know the difference.

I run the 4.9, and am happy with that one. I am not into the racing anymore.....well I will still show the young ones their cars are not as fast as they think they are....but that is when I feel like getting a winter beater, cause I will take a race, only if they bet the car....LOL That is how I got my 1993 Honda civic last year for a winter beater...LOL

Life is too short to grow up!

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