Engine Kits & Rotating Assemblies

Pro LS 4340 Rotating Assembly, 371 Cid., 4.040 bore, 3.622 stroke, 58x, 6.098 rod, 12cc dish, 9.8:1 @ 65cc, 9.3:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R583604012

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Pro LS Rotating Assembly, 371 Cid., 4.040 bore, 3.622 stroke, 58x, 6.098 rod, 2cc Flat Top, 10.9:1 @ 65cc, 10.3:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R58360402

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Pro LS Rotating Assembly, 330 Cid., 3.810 bore, Standard 3.622 stroke, 58x, 6.098 rod, 2cc dome, 11:1 @ 61cc, 10.4:1 @ 65cc, File-Fit Rings, H Bearing

Part Number: SUM-R58368102

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Pro LS 4340 Rotating Assembly, 346 Cid., 3.898 bore, 3.622 stroke, 58x, 6.098 rod, 3cc dome, 11:1 @ 65cc, 10.6:1 @ 68cc, File-Fit Rings, H Bearings

Part Number: SUM-R58368983

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Pro LS Rotating Assembly, 371 Cid., 4.040 bore, 3.622 stroke, 58x, 6.125 rod, 2cc Flat Top, 10.9:1 @ 65cc, 10.3:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R5836L0402

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Pro LS 4340 Rotating Assembly, 359 Cid., 3.780 bore, 4.000 stroke, 58x, 6.125 rod, 5cc dish, 10.9:1 @ 61cc, 10.4:1 @ 65cc, File-Fit Rings, H Bearings

Part Number: SUM-R58407805

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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-4595526STD

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Estimated Ship Date: Mar 9, 2026 if ordered today

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S&S Cycle 2017+ M8 129in Power Pack w/ Black Pushrod Tubes & Cam Chain Tensioners - Blk w/ Highlight

Part Number: SSY-310-1225

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Estimated Ship Date: Feb 23, 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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4.000" stroke, internal balance, billet 4340 steel, center-counterweighted Chevrolet Gen III "LS", no reluctor

Part Number: ESP-334540016100

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Estimated Ship Date: Mar 23, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4595525STD

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Estimated Ship Date: Mar 13, 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-4565055STD

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Estimated Ship Date: Mar 9, 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-4565050STD

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Estimated Ship Date: Mar 13, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4595513STD

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Estimated Ship Date: Mar 13, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4595514STD

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Estimated Ship Date: Mar 13, 2026 if ordered today

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Heavy Duty In-Frame Kit

Part Number: CLE-4595543STD

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Estimated Ship Date: Mar 13, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4865048STD

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Estimated Ship Date: Mar 13, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4595442STD

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Estimated Ship Date: Mar 13, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4895016STD

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Estimated Ship Date: Mar 13, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4895030STD

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Estimated Ship Date: Mar 13, 2026 if ordered today

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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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KIT-BBC 615 4.625/4.600 -3cc F

Part Number: MAN-38615

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Estimated Ship Date: Mar 13, 2026 if ordered today

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