Quote:
Originally Posted by INTMD8
As you've already touched on, engine position has to be considered when determining how much weight will have an effect.
(Is it all behind the front wheel centerline or is the weight partially leveraged over the front wheel centerline).
Of course lighter is always better and I would say the difference would be at least slightly noticeable to most, especially if you've had some time with the car with an aluminum engine to start.
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Well let's throw another factor into the equation. The ability to gain a higher output from a iron motor (via turbo and supercharging) to counter react the additional weight. If weight balance can be achieved so it doesn't effect handling how much additional horsepower must a car make to overcome that 80 lbs.