Quote:
Originally Posted by pgviper
Corvette LS3
Weight - 415 lbs
Power - 430 hp
Torque - 424 lb-ft
Efficiency -
16 MPG City
26 MPG HWY
19 MPG Comb
Regular Gasoline
Corvette LS7
Weight - 458lbs
Power - 505 hp
Torque - 470 lb-ft
Efficiency -
15 MPG City
24 MPG HWY
18 MPG Comb
Regular Gasoline
BMW S65
Weight - 445 lbs
Power - 414 hp
Torque - 295 lb-ft
Efficiency -
14 MPG City
20 MPG HWY
16 MPG Comb
Premium Gasoline
Ancient ... maybe, but much more efficient economically, power to weight, and mpg.
Chevrolet makes one of the best V8 engines around. The new LT1 makes 465 hp, still uses pushrod and gets over 30 mpg. Thats better than the 6 cylinder Carrera. This thing will also probably get high 20's, pushing over 620 hp and torque and avoid gas guzzler tax. Try purchasing any sports car that can match the performance of the z51 stingray or z06 and get numbers like that...
It just won't happen.
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I'm absolutely
not trying to add fuel to the fire, and I love the small block mills that Chevy pumps out, but I want to chime in here since this always gets brought up.
People quote the fuel efficiency of these V8s in relation to their size and whatnot, but let's use the C6, C6 Z06, and E92 M3's figures you posted. Curb weight of these respective models has
a lot to do with overall efficiency; the LS3 is pushing 3,179 pounds, while the LS7 is pushing 3,132. Meanwhile, the S65 has to deal with a hair over 3,700 pounds. That's a
570 pound weight difference between the two. That will severely impact fuel economy figures no matter how the engine is made.
Just food for thought.