Engine Kits & Rotating Assemblies

Pro LS 4340 Rotating Assembly, 376 Cid., 4.065 bore, 3.622 stroke, 58x, 6.125 rod, 12cc dish, 9.9:1 @ 65cc, 9.4:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R5836L06512

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Engine Rotating Assembly, Forged Crank, Forged Pistons, H-Beam Rods, Chevy, Big Block, Kit

Part Number: SCA-1-42454

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Pro LS Rotating Assembly, 325 Cid, 3.780 bore, Standard 3.622 stroke, 58x, 6.125 rod, 2cc dome, 10.9:1 @ 61cc, 10.3:1 @ 65cc, File-Fit Ring, H Bearing

Part Number: SUM-R5836L7802

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Pro LS 4340 Rotating Assembly, 365 Cid., 4.005 bore, 3.622 stroke, 58x, 6.125 rod, 12cc Dish, 9.6:1 @ 65cc, 9.2:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R5836L00512

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Pro LS Rotating Assembly, 330 Cid., 3.810 bore, Standard 3.622 stroke, 58x, 6.098 rod, 7cc dish, 9.8:1 @ 61cc, 9.4:1 @ 65cc, File-Fit Rings, H Bearing

Part Number: SUM-R58368107

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Engine Rotating Assembly, Forged 4340 Crank, Forged Pistons, H-Beam Rods, Ford, 557 Big Block, Kit

Part Number: ESP-15013080

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Estimated Ship Date: Sep 29, 2025 if ordered today

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Pro LS Rotating Assembly, 332 Cid., 3.820 bore, Standard 3.622 stroke, 58x, 6.098 rod, 7cc dish, 9.9:1 @ 61cc, 9.4:1 @ 65cc, File-Fit Rings, H Bearing

Part Number: SUM-R58368207

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Engine Rotating Assembly, Forged Crank, Forged Pistons, H-Beam Rods, Chevy, Big Block, Kit

Part Number: SCA-1-42355

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Rotating Assembly, Competition, Forged 4340 Crankshaft, Forged Dish Pistons, 2 pc. Seal, Ford, 408, Kit

Part Number: ESP-14700-030

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Estimated Ship Date: Sep 29, 2025 if ordered today

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Pro LS Rotating Assembly, 364 Cid., 4.000 bore, 3.622 stroke, 58x, 6.098 rod, 2cc Flat Top, 10.7:1 @ 65cc, 10.4:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R58360002

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Pro LS Rotating Assembly, 365 Cid., 4.005 bore, 3.622 stroke, 58x, 6.125 rod, 2cc Flat Top, 10.8:1 @ 65cc, 10.2:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R5836L0052

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Engine Rotating Assembly, Forged Crank, Forged Pistons, I-Beam Rods, Chevy, Small Block, Kit

Part Number: SCA-1-40755BI

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 10, 2025 if ordered today

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Engine Rotating Assembly, Competition, Forged Pistons, Forged Crank, H-Beam Rods, Chevy, Small Block, Kit

Part Number: ESP-B12077060

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Estimated Ship Date: Sep 29, 2025 if ordered today

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COMPETITION ASSEMBLY CHEV LS 4.8/5.3

Part Number: ESP-127623810

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Rotating Assembly, Competition, Forged 4340 Crankshaft, Forged Flat Pistons, 1-Piece Seal, Chevy, 408, Kit

Part Number: ESP-129384030

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Engine Rotating Assembly, Competition, Forged Crank, Forged Pistons, H-Beam Rods, Ford, Small Block, Kit

Part Number: ESP-B14003040

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Engine Rotating Assembly, Competition, Forged Crank, Forged Pistons, H-Beam Rods, Ford, Small Block, Kit

Part Number: ESP-B14003060

4.0 out of 5 stars ( 1 )

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COMPETITION ASSEMBLY FORD 429 / 460

Part Number: ESP-15016030

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Engine Rotating Assembly, Series 9000, Cast Crank, Forged Pistons, H-Beam Rods, Ford, Big Block FE, Kit

Part Number: SCA-1-94620BI

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Rotating Assembly 355 CHEVY

Part Number: SCA-1-41630BIE

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Engine Rotating Assembly, Forged Crank, Forged Pistons, H-Beam Rods, Ford, Small Block, Kit

Part Number: SCA-1-45360

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Estimated Ship Date: Nov 10, 2025 if ordered today

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BALANCED COMPETITION ASSEMBLY CHEV 350

Part Number: ESP-B12305060

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COMPETITION ASSEMBLY CHEV 454

Part Number: ESP-11421L060

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Estimated Ship Date: Sep 29, 2025 if ordered today

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Engine Rotating Assembly, Forged 4340 Crank, Forged Pistons, I-Beam Rods, Ford, Small Block, Kit

Part Number: SCA-1-47353BI

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Engine Rotating Assembly, Competition, Forged Pistons, Forged Crank, H-Beam Rods, Chevy, Small Block, Kit

Part Number: ESP-B12302L030

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