Mast Motorsports Ls7 Crate Motor Chain
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Sticking with a proven performer, the Mast 427 retains the factory timing set. Considering that a production LS7 revs freely to 7,000 rpm and is built to last over 100,000 miles, the stock timing set was deemed plenty durable for the Mast 427, which keeps valvespring pressures reasonable and produces peak power at 6,600 rpm. View Related Article
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