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Old 05-04-2007, 05:08 PM   #113
Casull

 
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Drives: Chevy Silverado
Join Date: Oct 2006
Location: Indianapolis
Posts: 754
Quote:
Originally Posted by LSxcellent View Post
I very much agree (and FWIW, so does my gf! )

My only complaint is that companies like BMW can make 500hp with 5 liters (in the new M5), whereas it takes GM 7 liters (in the LS7) to achieve the same power... They are either leaving a LOT on the table (~200hp) or they cannot make the most of the displacement they are using. That being said, the LS7 is actually LIGHTER than the S85 even though it has 40% more displacement!

___BMW S85 5-liter V-10___
WEIGHT - 529lbs (240kg)
POWER - 507hp (378kW) @ 7750rpm
TORQUE - 383 ftlb (520Nm) @ 6100rpm

___Corvette LS7 7 Liter V-8___

WEIGHT - 458lbs
POWER - 505 horsepower @ 6200 rpm
TORQUE - 475 lb.-ft. of torque @ 4800 rpm

Interesting comparison...

LSx

Yeah, but look at those torque numbers on the BMW... Horsepower is deceiving. All it is is a function of RPM and torque. Torque is where you "feel" the car, so i would take an engine with massive torque over an engine with far less torque but more HP any day of the week.

As for the weight, that is not at all suprising. You are comparing a V-10 to a V-8.... Displacement only means bigger holes, more cylinders means more parts and thus more weight.
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