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This guide breaks down how active exhaust valve technology integrates with classic LS1 architectures up through the newest LS configurations. What is a GSM Valve System? gsm ls1 ak ls2 ls3 new
: Launched in 2008, the LS3 increased displacement further to 6.2 liters, delivering 430hp. It featured significantly larger rectangular-port heads and is considered one of the most reliable and durable performance engines ever built. The "GSM" and "AK" Connection Here is the shopping list for the enthusiast searching for