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Originally Posted by jarrus  Correct gear ratio's and correct turbo selection should make up for the lack of rev's any day |
They are certainly interchangeable. As we've said before it's roadwheel torque which accelerates the car.
So a petrol engine with less flywheel torque can take advantage of its higher revving nature by using lower gears.
All that gear ratios do is to exchange revs for torque. The actual power in the system is exactly the same either side of the box.
But then diesels will pull hard from 1500rpm or lower in some cases so can therefore pull longer gears.
It's more down to preferred driving style now more than anything else.
There's no hard and fast rules