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The new LT1 engine is a 6.2 liter 90-degree all-aluminum sleeved OHV V-8, part of an all-new GM engine family to be built in the familiar GM engine plant in Tonawanda NY. The engine features direct injection, cylinder shut-off, and cam phasing. Not true variable cam timing, because the intake and exhaust timing are varied in sync. The engine will run as a V-4 under light throttle and cruising. Optional on an unannounced model will be dry-sump oiling.