CHEVROLET Chevy small block Gen III/IV (LS-based engines) Engines & Components

Pro LS 2618 Forged Pistons. 3.780 bore, 1.299 C.H., 7cc dish, Std. Stroke, .6.125 Rod, NA/Boost/Nitrous, Coated, 4.8L 5.3L LS Vortec Truck, Set of 8

Part Number: SUM-2999273780-7

5.0 out of 5 stars ( 1 )

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Alternator and Power Steering Brackets, Driver Side, Alternator Upper Mount, Power Steering Lower Mount, Billet Aluminum, Chevy, LS, Kit

Part Number: ICB-551519X-3

5.0 out of 5 stars ( 8 )

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Pro LS 2618 Forged Piston, 4.000 bore, 1.326 C.H., 2cc Flat, Std. Stroke, Full Float Rod, NA/Boost/Nitrous, Cathedral/Rect. 6.0L LY6 LQ4 LQ9, Set of 8

Part Number: SUM-3269434000-2

5.0 out of 5 stars ( 2 )

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Camshaft Kit, Pro LS Vortec Truck Swap, Hydraulic Roller Tappet, Advertised Duration 278/287, Lift .523/.524, Chevy GM, LS/LSX, Gen III/IV, LS, Kit

Part Number: SUM-8701-1

4.2 out of 5 stars ( 5 )

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Engine 427 c.i. GM LS Style Proseries Iron Block, Fabbed Alum Intake, E Controls, BPE Pulley Kit

Part Number: MLL-PSLS4275CTFK

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Rod Bearings, HP-Series, Standard Size, Bi-metal, Silicon Aluminum, Large Journal, Chevy, Small Block, Set of 8

Part Number: KGB-CR807HPN

4.62 out of 5 stars ( 13 )

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Connecting Rods, SIR I-Beam, Forged 5140 Steel, 6.100 in. Length Center To Center, Chevrolet, Small Block LS, Set of 8

Part Number: ESP-SIR6100MLW

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Summit Chevy LS 4340 Forged Steel Crankshaft, 3.622 stroke, 58X Reluctor, Gun-drilled and Lightened, Nitride Hardened, Narrowed Rod Bearings Req.

Part Number: SUM-180LS362258

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Connecting Rod Bolts, Pro Series, 2000 Alloy, Chevy, LS, Kit

Part Number: ARP-234-6301

5.0 out of 5 stars ( 12 )

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Cam Bolt, High Performance, Chromoly, Hex Head, m8 x 1.25 mm, LS Gen III, Kit

Part Number: ARP-134-1003

4.93 out of 5 stars ( 72 )

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Valve Covers, Aluminum LS, Centerbolt, Plain Top, Cast Aluminum, Black Textured, Baffled, Chevy, LS, 4.8L, 5.3L, 5.7L, 6.0L, 6.2L, 7.0L, Pair

Part Number: HLY-241-91

4.66 out of 5 stars ( 32 )

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Valve Cover Spacers, Perimeter Bolt, Billet Aluminum, Natural, 0.500 in Thick, Chevy, Small Block Chevy Valve Covers to LS Engine, Pair

Part Number: BSP-95037

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Pro LS 2618 Forged Piston, 4.030 bore, 1.299 C.H., 12cc Dish, Std. Stroke, 6.125 .927 Rod, NA/Boost/Nitrous, Cathedral/Rect. 6.0L LY6 LQ4 LQ9,Set of 8

Part Number: SUM-299927403012

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Main Bearings, SI-Series, 1/2 Groove, Standard Size, Bi-metal, Silicon Aluminum, Chevy, 4.8, 5.3L, Set of 5

Part Number: KGB-MB5293SI

5.0 out of 5 stars ( 9 )

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Main Bearings, Race Series, Tri-Metal, 3/4 Groove, Standard Size, Chevrolet, LS, Set of 5

Part Number: PEB-5M7298H-STD

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Stage 4 Pro LS Cam, Extra Valve Clearance Version, 234/248 113.5 +3.5 .625/.605 Lift, Great Power, 3-bolt, 4.8-7.0L , Vortec LS1 LS2 LS6 LS7 LQ9 LS9

Part Number: SUM-8711R1

5.0 out of 5 stars ( 2 )

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Camshaft Kit, Pro LS Vortec Truck Swap, Hydraulic Roller Tappet, Advertised Duration 261/269, Lift .550/.550, Chevy GM, LS/LSX, Gen III/IV, Kit

Part Number: SUM-8719-1

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Crate Engine, LS Crate Motor, Base Long Block, LS3 Stroker Motor, 58x Gen 4 Drop In Replacement Crate Engine

Part Number: MLL-PSLS4271CT

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Cylinder Head, GenX® 255, CNC Comp Port, Assy, 69cc CNC Chamber, 450 lbs. Springs, Ti Retain, 6-Bolt, GM LSX, Each

Part Number: TFS-3261T004-C01

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Pro LS 4340 Rotating Assembly, 416 Cid., 4.070 bore, 4.000 stroke, 58x, 6.125 rod, 6cc dish, 11.5:1 @ 65cc, 10.9:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R58400706

2.0 out of 5 stars ( 1 )

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Engine 427 c.i. GM LS Style Proseries Iron Block, Fabbed Alum Intake, No Controller

Part Number: MLL-PSLS42750CTF

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Valve Springs, Beehive, Single, 1.307 in. O.D., 1.800 in. Installed height, 340 lbs./in. Rate, 1.100 in. Coil Bind Height, Set of 16

Part Number: RSC-PAC-1219-16

5.0 out of 5 stars ( 2 )

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Rocker Arms, Pedestal Mount, 1.7 Ratio, Aluminum, Roller Rockers, Chevy, LS, Set

Part Number: CSP-SLS17

4.26 out of 5 stars ( 19 )

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Rocker Arm Mounting Stand, Pedestal, Billet Aluminum, Chevy, LS3, Pair

Part Number: SUM-01-7005

5.0 out of 5 stars ( 6 )

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Main Bearing Set, CHEVROLET LS series L20, LS1/2/4/6 - pMaxKote

Part Number: KGB-MB5013XPC

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