CHEVROLET 7.0L/427 Manley Parts and Accessories

Valve Springs/ Titanium Retainers, Nex Tek, 1.640 in. Outside Diameter, 604 lbs./in. Spring Rate, Kit

Part Number: MAN-261425

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Nex Tek Valve Springs/ Titanium Retainers, Super Gas/Comp/Big Block Bracket, Kit

Part Number: MAN-261424

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Estimated Ship Date: Apr 20, 2026 if ordered today

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Valve Spring, Nex Tek, Dual, 1.335 in. Outside Diameter, 780 lbs/in., Set of 16

Part Number: MAN-221422-16

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Estimated Ship Date: Apr 17, 2026 if ordered today

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Valves, Extreme Duty Series, Exhaust, 1.610 in. Diameter, XH-432 Xtreme Alloy, Chevy, 7.0L LS, Set of 8

Part Number: MAN-11687-8

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Valves, Exhaust, XH-432 Xtreme Alloy, 1.880 in. Head Diameter, 5.454 in. Length, Chevy, Big Block, Set of 8

Part Number: MAN-11731-8

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Valve, Intake, Stainless Steel, 1.900 in. Diameter, 0.342 in. Stem, 5.522 in. Length, Chevrolet, Set of 8

Part Number: MAN-11739-8

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Valve Spring and Retainer, NexTek, Dual, 8mm Stem Diameter, 7 Degree Lock, 1.311 in. Spring O.D., Kit

Part Number: MAN-26382538KS

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Valve Spring and Retainer, NexTek, Dual, 8mm Stem Diameter, 10 Degree Lock, 1.295 in. Spring O.D., Kit

Part Number: MAN-26361634KS

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Valve Springs/ Titanium Retainers, Nex Tek, 1.640 in. Outside Diameter, 647 lbs./in. Spring Rate, Kit

Part Number: MAN-261424L

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Estimated Ship Date: Apr 20, 2026 if ordered today

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