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

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® 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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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 )

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

Part Number: EDL-7764

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Estimated Ship Date: Dec 1, 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

Cylinder Head, GenX® 215, CNC Competition Ported, Assembled, 64cc CNC Chambers, Ti Retainers, GM LS1, Each

Part Number: TFS-3061T001-C01

4.67 out of 5 stars ( 3 )

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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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Cylinder Head, GenX® 215, CNC Competition Ported, Assembled, 64cc CNC Chambers, GM LS1, Each

Part Number: TFS-30610001-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: Dec 1, 2025 if ordered today

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Cylinder Heads, Street Porting, Aluminum, Assembled, 66cc Chamber, 205cc Intake, Chevy, Small Block, LS, Pair

Part Number: AFR-1510

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Estimated Ship Date: Dec 2, 2025 if ordered today

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Cylinder Heads, 260cc LS3 Mongoose, Aluminum, Bare, 69cc Chamber, 260cc Intake, Round Exhaust Port, Pedestal Mounting Style, Chevrolet, 6.2L, Pair

Part Number: AFR-1846

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Estimated Ship Date: Dec 1, 2025 if ordered today

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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, GenX® 235, Competition Ported, Bare, 70cc CNC Chambers, Standard, GM LSX, Each

Part Number: TFS-3061B001-C03

4.0 out of 5 stars ( 1 )

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Cylinder Head, GenX® 235, Competition Ported, Assembled, 70cc CNC Chambers, Ti Retainers, 6-Bolt, GM LSX, Each

Part Number: TFS-3061T003-C03

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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® 280 HIP, CNC Competition Ported, Bare, 280cc Intake Ports,

Part Number: TFS-3261B04-HC01

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Cylinder Head, GenX® 235, Competition Ported, Bare, 70cc CNC Chambers, 6-Bolt, GM LSX, Each

Part Number: TFS-3061B003-C03

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Valve Seat Inserts, Exhaust, Ductile Iron, 1.350 in. I.D., 1.650 in. O.D., Chevrolet, Ford, Each

Part Number: AFR-9069

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Cylinder Heads, BR7 STS LS Compatible, Aluminum, Assembled, 72cc Chamber, 273cc Intake Runner, Chevy, Pair

Part Number: BRO-1178101

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Estimated Ship Date: Dec 10, 2025 if ordered today

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Head Combo, GenX® Top-End, Chevy, Small Block, LS2, Kit

Part Number: TFS-K306-550-470

3.33 out of 5 stars ( 3 )

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Head Combo, GenX® Top-End, 500 HP/460 ft.-lbs. Torque, Chevy, Small Block, LS1, Kit

Part Number: TFS-K306-500-460

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Cylinder Head, Black Label, 62cc Combustion Chamber, Bare, 2.040 in. Intake Valve, 1.570 in. Exhaust Valve, Chevy, LS, Pair

Part Number: MML-CHLSX600203

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Estimated Ship Date: Dec 19, 2025 if ordered today

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Cylinder Heads, 260cc LS3 Mongoose, Aluminum, Bare, 69cc Chamber, 245cc Intake, Round Exhaust Port, Pedestal Mounting Style, Chevrolet, 6.2L, Pair

Part Number: AFR-1841

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Cylinder Head, Factory Mast, 71cc Combustion Chamber, Assembled, 2.250 in. Intake Valve, 1.600 in. Exhaust Valve, Chevy, LS3, Pair

Part Number: MML-CHLSX302525

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Estimated Ship Date: Dec 19, 2025 if ordered today

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