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GM's LS3 Vs. LSA Engine: What's The Difference & Which Is Better For Your Needs?
Starting with the obvious, they are both 6.2 liter, pushrod V8 engines that share the same 4.065-inch bore and 3.622-inch stroke. They also both use an aluminum block and L92/LS3 cylinder heads.
Which Cars Have A L99 Engine Under The Hood And How Much Horsepower Does It Produce
While the LS3 V8 runs all eight cylinders continuously, the L99 uses Active Fuel Management ... fitted with the six-speed ...