Originally Posted by choppa
i would expect the 5litre engine to make a lot more torque than the 2litre with the same hp. making the 5litre, effectively, a more powerful choice. but its heavier, by quite a lot, so that has to be put into the power to weight calculation.
Not really
A wildcat 6 litre Rover V8 probably weighs less than a YB 2 litre but can and has made 747 bhp and 525 lbsft Nat Asp on high octane unleaded fuel.
A turbo charged big engine will obviously have even more advantage, why cripple yourself with a small engine when a bigger one can do it on less boost with more torque at low rpm.
Mark