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050 effectively decreasing spring pressure
low-resistance
They feature an exclusive
Nothing lasts forever
They are manufactured from machined steel and offer excellent valve spring location
Chevy BBC 396 454 High Performance 12 Point Main Bolt Kit 050 effectively decreasing spring pressureSpeedmaster engine hardware are premium grade, race quality componets that are created from aircraft quality 8740 high tensile strength chromoly steel, withstanding up to 190,000 PSI . They are ground and thread rolled after heat treatment to ensure the exacting tolerances that Speedmaster requires for all of their fasteners. This ensures strength and consistent torque readings. All kits come complete with 4130 heat treated, parallel ground washers
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