i was just wondering at 80 mph what rpm i should be at.i am at 3k rpm.i thought my 03 sedan auto was at about 2500.is the coupe geared dif?

 

3 x 1000rpm

 

Both are geared the same. I've had loaner sedans and there was no difference.

 

Final Gearing
I just checked the Infiniti site for gearing specs for the coupe and sedan. The final gear ratio is as follows:

03/04/05 Automatic Coupes and Sedans .....................3.357:1 Final Gear ratio

03/04/05 6 M/T Coupes and Sedan and G35X AWD........3.538:1 Final Gear Ratio

Therefore the manual transmision cars and the G35X should rev different than the auto coupe and sedan.

In my 05 G35X at 100km/h (60mph) = 2,450 RPM, and 120km/h (72mph) = 3,000 RPM (this is with my snows on which are supposed to be the same diameter, but there probably is some error)

 

my 200hp 98 V6 accord automatic did 90 at 3000 rpm's...

why is it faster at the same rpm's?? i know the answer is prolly gonna be the "final gear ratio", but what does that mean in lamens terms?? and is that better or worse? gas and/ or performance...

 

A 32 valve V8 generates enough torque to allow an effective final gear ratio [top gear x diff gear x tire rolling load radius] of something like 2.4-2.5 at 55 mph up a slight incline AC on with full load of gasoline and passengers [within the warranty period] [engine compression at brand new spec].

A 32 valve V6 DOES NOT therefore 10-15-even 20% more rpm are required depending on vehicle weight.

A V8 can function at 2000 rpm = 60 mph in a 4300-4500-4900 pound loaded car, a lighter weight V6 will need 2300 rpm [15% is usually].