Engine Kits & Rotating Assemblies

Pro LS 4340 Rotating Assembly, 417 Cid., 4.075 bore, 4.000 stroke, 58x, 6.125 rod, 21cc dish, 9.9:1 @ 65cc, 9.5:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R584007521

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Estimated Ship Date: Today

HD IN-FRAME KIT

Part Number: CLE-4805032STD

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Estimated Ship Date: Mar 12, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4595526STD

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Estimated Ship Date: Mar 9, 2026 if ordered today

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Heavy Duty In-Frame Kit

Part Number: CLE-4595547STD

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Estimated Ship Date: Mar 6, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4685133STD

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Estimated Ship Date: Mar 5, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-45955251STD

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Estimated Ship Date: Feb 23, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4595443STD

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Estimated Ship Date: Mar 11, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4595512STD

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Estimated Ship Date: Mar 11, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4595515STD

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Estimated Ship Date: Mar 11, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4595519STD

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Estimated Ship Date: Mar 11, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4595528STD

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Estimated Ship Date: Mar 11, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4595529STD

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Estimated Ship Date: Mar 11, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4595532STD

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Estimated Ship Date: Mar 11, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4595539STD

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Estimated Ship Date: Mar 11, 2026 if ordered today

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HD OVERHAUL KIT

Part Number: CLE-4681094STD

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Estimated Ship Date: Mar 11, 2026 if ordered today

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HD OVERHAUL KIT

Part Number: CLE-4681100STD

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Estimated Ship Date: Mar 11, 2026 if ordered today

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HD OVERHAUL KIT

Part Number: CLE-4681128STD

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Estimated Ship Date: Mar 11, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4685128STD

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Estimated Ship Date: Mar 11, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4685150STD

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Estimated Ship Date: Mar 11, 2026 if ordered today

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HD IN-FRAME KIT, STD

Part Number: CLE-4865056STD

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Estimated Ship Date: Mar 11, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4565007STD

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Estimated Ship Date: Mar 11, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4565036STD

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Estimated Ship Date: Mar 11, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4565040STD

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Estimated Ship Date: Mar 11, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4565046STD

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Estimated Ship Date: Mar 11, 2026 if ordered today

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3.622" stroke, internal balance, billet 4340 steel, center-counterweighted Chevrolet Gen III "LS", no reluctor

Part Number: ESP-334536236100

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Estimated Ship Date: Mar 23, 2026 if ordered today

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