2003 Engines & Components

Pro LS Piston and Rod Kit, 325 Cid., 3.780 bore, Standard 3.622 stroke, 6.125 rod, 7cc dish, 9.7:1 @ 61cc, 9.3:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR36L7807

4.0 out of 5 stars ( 3 )

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Pro LS 4340 Piston and Rod Kit, 370 Cid., 4.030 bore, 3.622 stroke, 6.125 rod, 12cc Dish, 9.7:1 @ 65cc, 9.3:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR36L03012

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Pro LS 4340 Piston and Rod Kit, 370 Cid., 4.030 bore, 3.622 stroke, 6.098 rod, 12cc dish, 9.7:1 @ 65cc, 9.3:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR3603012

5.0 out of 5 stars ( 3 )

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Cylinder Head, Twisted Wedge® 185, Fast As Cast®, Assy, 44cc Chambers, 90 Lb. Springs, Ford 4.6/5.4L 2V, Each

Part Number: TFS-51910002-M44

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Estimated Ship Date: Jan 29, 2026 if ordered today

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CORVETTE ACCESSORY DRIVE SYSTEM, WITH A/C

Part Number: NAL-19421444

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Cam and Spring Combo, Adv. Duration 262/264, Lift .550/.550, Lobe Sep. 112, w/ Springs, Ford 4.6L/5.4L 2V, Kit

Part Number: TFS-K51802003

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Crankshaft, Compstar 4340 Forged LS, 4.000 Stroke, Internal Balance, 8 counterweight, 6-bolt Flange, Standard Snout, Each

Part Number: CPI-APO-31Q-CS

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Estimated Ship Date: Jan 29, 2026 if ordered today

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

Part Number: TFS-30510001-C00

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Cylinder Head, Twisted Wedge® 185, Fast As Cast®, Assy, 44cc Chambers, 150 Lb. Springs, Ford 4.6/5.4L 2V, Each

Part Number: TFS-51910006-M44

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Jan 29, 2026 if ordered today

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Camshaft, HRT Max Power Master, Stage 2, Hydraulic Roller, 1,900-6,700 RPM Range, 1-Bolt Gear Attachment, Dodge, Chrysler, Jeep, Gen III Hemi, Kit

Part Number: CCA-MK112-303-11

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Cam and Lifters, Hydraulic Roller Tappet, Advertised Duration 265/271, Lift .522/.529, Chevy, LS, Kit

Part Number: CCA-K54-412-11

4.0 out of 5 stars ( 1 )

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Cylinder Head, Twisted Wedge® 185, Fast As Cast®, Assy, 38cc Chambers, 125 Lb. Springs, Ford 4.6/5.4L 2V, Each

Part Number: TFS-51910003-M38

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Estimated Ship Date: Feb 2, 2026 if ordered today

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Cylinder Head, Freedom Series Duramax, Cupless Injectors Bore, Driver side , 6.6L, LB7, Chevy, GMC, Each

Part Number: FLE-S0401

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Cylinder Head, Freedom Series Duramax, Cupless Injectors Bore, Passenger side , 6.6L, LB7, Chevy, GMC, Each

Part Number: FLE-S0402

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Accessory Drive Systems, LS Engine Swap, Serpentine Style, Alternator, Power Steering, Pullies, 6-groove, Natural Finish, Chevy, LS, 4.8-7.0L, Kit

Part Number: HLY-20-156

3.0 out of 5 stars ( 2 )

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Valve Covers, Cast Aluminum, Big Block Chevy Style for LS, Tonawanda Decals, Oil Filler, Breather Tube, Centerbolt, 2 in. Tall, Chrome, Chevy, Pair

Part Number: LSS-GMLS1003C

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Crankshaft, 1-Piece Seal, Internal Balance, Forged 4340 Steel, 4.000 in. Stroke, Chevy, 5.7, 6.0L, Each

Part Number: ESP-434640006100

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Cylinder Head, Twisted Wedge® 185, Fast As Cast®, Assy, 44cc Chambers, 125 Lb. Springs, Ford 4.6/5.4L 2V, Each

Part Number: TFS-51910004-M44

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Feb 2, 2026 if ordered today

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Cylinder Head, Assembled, Cast Iron, OEM, Chevrolet, Duramax Diesel, V8, LB7, Each

Part Number: PPE-110100101

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Estimated Ship Date: Nov 18, 2025 if ordered today

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Pro LS 4340 Piston and Rod Kit, 364 Cid., 4.000 bore, 3.622 stroke, 6.125 rod, 12cc Dish, 9.6:1 @ 65cc, 9.2:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR36L00012

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Crankshaft, Standard Weight, Forged 4340 Steel, 3.750 in. Stroke, Internal Balance, Ford, Modular V8, Each

Part Number: SCA-46L020

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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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Pro LS Piston and Rod Kit, 332 Cid., 3.820 bore, Standard 3.622 stroke, 6.125 rod, 2cc dome, 11:1 @ 61cc, 10.5:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR36L8202

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Connecting Rod, I-Beam, Chromoly 4340 Steel, Shot-Peened, Floating Pin, Ford, 4.6L, 5.0L, Modular, Set of 8

Part Number: BLN-FD5933-866

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