The 5.3 liter LS-series engine was offered from 1999-2014 and has a 3.78" bore x 3.62" stroke. The block was offered in both cast-iron and aluminum with aluminum cylinder heads. Camshaft specifications varied depending on the year and RPO code of the engine.. LS1- Aluminum V12 Block Made From GM LS V8. They are thermally efficient and warm up much quicker than cast iron block engines of equivalent size. This means they also put out fewer emissions. An aftermarket aluminum V8 block weighs roughly 80 to 100 lbs. less than an identical cast iron block of equal displacement.
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The difference can also be found in the supercharger. The LS9 has a 4-lobe Eaton 2.3 L supercharger on top, while the LSA has a smaller 1.9 L. Both are the most powerful engines offered in their respective cars, the LS9 in the Corvette ZR1, and the LSA in the CTS-V and hopefully the Camaro Z28 one day.. In 2005, the all-new C6 Corvette also introduced the LS2 6.0L engine. It was the first of the Gen IV LS engines, which used a larger, 4.000-inch bore dimension to increase displacement from the LS1's 346 ci to 364 ci. It helped elevate the Corvette's standard output to 400 hp and 400 lb-ft of torque, which was a new high-water mark for the car.
