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CHEVROLET Top End Kits

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Trick Flow® GenX® Top-End Engine Kits for GM LS TFS-K326-580-520

Head Combo, GenX® Top-End, 580hp, 520 ft-lbs. Torque, GM, LS3, Square Port, Kit

Part Number: TFS-K326-580-520

3.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 9/22/2025

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Estimated Ship Date: Monday 9/22/2025

TOP END KIT

Part Number: NAL-12558060K1

Not Yet Reviewed

Estimated Ship Date: Monday 9/22/2025

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Estimated Ship Date: Monday 9/22/2025

LT1 CAM and Head Kit

Part Number: NAL-19333525

Not Yet Reviewed

Estimated Ship Date: Jan 15, 2026 if ordered today

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Estimated Ship Date: Jan 15, 2026 if ordered today