Starting with an increase in displacement, the LS3 checks in at 6.2 liters (376 ci) versus the previous 6.0L LS2 combination. This comes courtesy of an increase in bore from 4.00 inches (in the LS2) ...
In its infinite wisdom, Chevy saw fit to design the LS3/L92 LS heads as a direct bolt-on for the early cathedral-port motors, at least those with sufficient bore size. The LS3 motors featured a 4.065 ...
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