How much does an LS1 weight vs. O-540?
The ready to fly weight of the LS1 (less prop), complete with PSRU, flywheel, engine, radiator, all accessories, including alternator and starter, water and oil, comes in just under 500#. The O-540, equipped same as above, weighs 520# (less prop). Yes, the LS1, ready to fly, less prop, apples to apples, weights in less than an O-540 and has a lot more horsepower.
