Ls3 Cylinder Head Cam Intake Swap Valvesprings
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Along with the cam swap, Mast installed its nitrided 1.290-inch springs onto the stock LS3 heads to handle the extra valve lift. They feature 130 pounds of seat pressure, 318 pounds over the nose, and are good for up to 0.650-inch lift. The springs are direct stock replacements that are compatible with the stock retainers and locks, and are sold as a package with the Mast cam for $680. View Related Article
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