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I would like to know why the V6 VN commodore automatic seems to be quick? For example my Faclon straight six cylinder XF EFI has Power: 121kW at 4000rpm and Torque: 325Nm at 3000rpm the Commodore VN EFI has power: 125kW @ 4800 RPM torque: 292 Nm @ 3200 rpm it has 4 more Kw yet it goes quicker than my XF, my XF only weighs a little bit more than the VN, so weight isn't an issue. Its not a lot quicker..but still only 4kw makes that much difference? I doubt....
Is it something to do with the gear ratio...the differential maybe? It cant be the fact that my XF is a 3 Speed Auto, and the Vn's is a 4 speed auto, because the 4 speed is only overdrive/economy, so you actually lose power if you use overdrive, so really the Vn is actually a 3 speed like mine (if you drive the auto manually) I know the VN revs higher....I also heard the VN's first gear is geared higher, so it revs out faster....?
The VN does (Manual)
0 - 100kph - 8.1 seconds (3.8L V6)
Quarter Mile - 15.7 seconds (3.8L V6)
The XF EFI does (Manual)
0-100km/h: 9.5 seconds
Standing 400m: 16.6 seconds
I know its only a little over a second quicker, which is a lot in terms of racing, but it is only 4kw power difference, with the XF EFI having low down torque and more torque.
This one has always baffled me, as I know the VN isn't super quick, but I just dont see how an engine with 4 more kw and less torque can be that much quicker? The VN is also faster than a VS/VT.
By the way, they are stock standard engines.
Is it something to do with the gear ratio...the differential maybe? It cant be the fact that my XF is a 3 Speed Auto, and the Vn's is a 4 speed auto, because the 4 speed is only overdrive/economy, so you actually lose power if you use overdrive, so really the Vn is actually a 3 speed like mine (if you drive the auto manually) I know the VN revs higher....I also heard the VN's first gear is geared higher, so it revs out faster....?
The VN does (Manual)
0 - 100kph - 8.1 seconds (3.8L V6)
Quarter Mile - 15.7 seconds (3.8L V6)
The XF EFI does (Manual)
0-100km/h: 9.5 seconds
Standing 400m: 16.6 seconds
I know its only a little over a second quicker, which is a lot in terms of racing, but it is only 4kw power difference, with the XF EFI having low down torque and more torque.
This one has always baffled me, as I know the VN isn't super quick, but I just dont see how an engine with 4 more kw and less torque can be that much quicker? The VN is also faster than a VS/VT.
By the way, they are stock standard engines.