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Hughes also had the heads cleaned, magnafluxed, and shot-blasted, then pressure checked them after porting. The pro valve job included new 2.02/1.625 valves, 11/32-inch bronze guides, new Hughes springs matched to the cam, new retainers and keepers, Viton seals, and a complete balancing of valvespring pressures and valve tip heights. Hughes angle-cut the intake surface to compensate for the 0.070 milling, and the intake ended up fitting perfectly. The heads dented the budget, but we were happy.