CHEVROLET Chevy small block Gen III/IV (LS-based engines) Cylinder Heads

Assembled LS Chevy Aluminum Cylinder Head, As Cast, 259CC, 72CC Combustion Chamber, Standard Head Bolts, LS3

Part Number: MLL-PS8015

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Cylinder Head, GenX® 255, CNC Competition Ported, Assembled, 69cc CNC Chambers, 370 Lb. Springs, GM LSX, Each

Part Number: TFS-32610001-C01

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Cylinder Head, GenX® 260, CNC Comp Port, Assembled, 70cc CNC Chamber, 450 Lb. Springs, Ti Retain, GM LSX, Each

Part Number: TFS-3271T002-C01

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Oct 10, 2025 if ordered today

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Cylinder Head, GenX® 205, Competition Ported, Assembled, 58cc CNC Chamber, Titanium Retain, GM LS Vortec, Each

Part Number: TFS-3051T001-C00

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Estimated Ship Date: Oct 13, 2025 if ordered today

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Cylinder Head, GenX® 245, CNC Comp Port, Bare, 70cc CNC Chambers, 6-Bolt, GM LSX, Each

Part Number: TFS-3061B003-C04

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Estimated Ship Date: Aug 26, 2025 if ordered today

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Cylinder Head, GenX® 205, Competition Ported, Assembled, 58cc CNC Chambers, GM LS Vortec, Each

Part Number: TFS-30510001-C00

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Estimated Ship Date: Oct 13, 2025 if ordered today

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Valve Seats, Ductile Iron, Exhaust, 1.680 in. Outside Diameter, Chevy, Small Block, LS1, Set of 8

Part Number: TFS-30600274

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Head Combo, GenX® Top-End, 515 HP/460 ft.-lbs. Torque, Chevy, Small Block, LS1, Kit

Part Number: TFS-K306-515-460

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Oct 1, 2025 if ordered today

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Cylinder Head, GenX® 260, CNC Comp Port, Assembled, 70cc CNC Chamber, 370 Lb. Springs, Ti Retain, GM LS, Each

Part Number: TFS-3271T001-C01

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Estimated Ship Date: Oct 10, 2025 if ordered today

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Cylinder Head, GenX® 255, Aluminum, Bare, 69cc Chamber, 255 cc Intake, 4-Bolt, GM, 6.2,.7.0L, LSX Block, Each

Part Number: TFS-3261B001-C01

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Cylinder Heads, Mongoose Strip, Assembled, 64cc Chambers, 245cc Intake Ports, Chevy, LSX, Pair

Part Number: AFR-1680

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Estimated Ship Date: Aug 7, 2025 if ordered today

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Engine Coolant Plug Fastener, Bolt, Internal Allen Head, 27mm x 1.00 Thread Size, 17mm Allen Head Size, Chevy, Small Block LS, LT, Each

Part Number: NAL-11611351

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Valve Seats, Ductile Iron, Intake, 2.125 Outside Diameter, Chevy, Small Block, LS1, Set of 8

Part Number: TFS-30600271

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Cylinder Head, GenX® 260, CNC Competition Ported, Assembled, 70cc CNC Chambers, 370 Lb. Springs, GM LSX, Each

Part Number: TFS-32710001-C01

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Cylinder Head Studs, Pro Series, 12-Point Head, Chromoly, Black Oxide, Chevy, Warhawk LS Aluminum Block, Kit

Part Number: ARP-134-4701

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Cylinder Head, GenX® 260, CNC Competition Ported, Bare, 70cc CNC Chambers, 6-Bolt Mounting, GM LSX, Each

Part Number: TFS-3271B003-C01

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Estimated Ship Date: Oct 10, 2025 if ordered today

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Cylinder Head, GenX® 220, Fast As Cast®, Assembled, 65cc CNC Chambers, GM LS2, Each

Part Number: TFS-30610002

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Oct 13, 2025 if ordered today

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Engine Coolant Plug Fastener, Bolt, Internal Allen Head, 28mm x 1.25 Thread Size, Steel, Natural, Chevy, Small Block LS, Each

Part Number: NAL-12561663

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

Valve Seats, Ductile Iron, Exhaust, 1.625 in. Outside Diameter, Chevy, Small Block, LS1, Set of 8

Part Number: TFS-30600272

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Cylinder Head, GenX® 255, Aluminum, Bare, 69cc Chamber, 255 cc Intake, GM, 6.2,.7.0L, LSX Block, Each

Part Number: TFS-3261B003-C01

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Head Bolt, 11mm, Hex, Cadillac, Chevy, Small Block Chevy, LS, Each

Part Number: NAL-19258707

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Engine Coolan Plugs, Chevy, Small Block LS Gen III and Gen IV, Small Block LT Gen V, Each

Part Number: ICB-551282

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Cylinder Head Fasteners, Cylinder Head Bolt Kits, 12-point Head, Chromoly, Black, Flat Washers, Chevrolet, Small Block LS, Kit

Part Number: EAR-TBS-002ERL

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Estimated Ship Date: Sep 3, 2025 if ordered today

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Cylinder Heads, E-Street, 15-Degree, for GM LS3, with 0.660 in. Lift, Aluminum, Assembled, Chevy, Pair

Part Number: EDL-77618

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Cylinder Heads, E-Street, Assembled, Aluminum, 64cc Chamber, 210cc Intake Runner, 75cc Exhaust Runner, Cathedral Port, Chevy, Small Block LS, Pair

Part Number: EDL-7763

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Estimated Ship Date: Aug 11, 2025 if ordered today

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