Engine Kits & Rotating Assemblies

Forged Rotating Assembly, 6.0L/371Cid, 4.040 Bore, 3.622 Stroke, 6.098 in. Rod, Piston 12cc Dish, Steel Rings+Race Bearings -Coated/GP Rings opt..

Part Number: SUM-RALS60033

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Estimated Ship Date: Monday 10/19/2026 if shipped by air

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Forged Rotating Assembly, 6.0L/371Cid, 4.040 Bore, 3.622 Stroke, 6.098 in. Rod, Piston -8cc Dome, Steel Rings+Race Bearings -Coated/GP Rings opt..

Part Number: SUM-RALS60024

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Forged Rotating Assembly, 6.0L/370Cid, 4.030 Bore, 3.622 Stroke, 6.098 in. Rod, Piston -8cc Dome, Steel Rings+Race Bearings -Coated/GP Rings opt..

Part Number: SUM-RALS60048

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Forged Rotating Assembly, 6.0L/364Cid, 4.000 Bore, 3.622 Stroke, 6.098 in. Rod, Piston 12cc Dish, Steel Rings+Race Bearings -Coated/GP Rings opt..

Part Number: SUM-RALS60001

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Forged Rotating Assembly, 6.0L/370Cid, 4.030 Bore, 3.622 Stroke, 6.098 in. Rod, Piston 12cc Dish, Steel Rings+Race Bearings -Coated/GP Rings opt..

Part Number: SUM-RALS60028

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Forged Rotating Assembly, 6.3L/389Cid, 4.005 Bore, 3.858 Stroke, 6.125 in. Rod, Piston 16cc Dish, Steel Rings+Race Bearings -Coated/GP Rings opt..

Part Number: SUM-RALS60052

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Forged Rotating Assembly, 6.4L/394Cid, 4.030 Bore, 3.858 Stroke, 6.125 in. Rod, Piston 3cc, Steel Rings+Race Bearings -Coated/GP Rings opt..

Part Number: SUM-RALS60061

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Forged Rotating Assembly, 6.7L/410Cid, 4.040 Bore, 4.000 Stroke, 6.125 in. Rod, Piston -1cc Dome, Steel Rings+Race Bearings -Coated/GP Rings opt..

Part Number: SUM-RALS60090

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Forged Rotating Assembly, 6.7L/410Cid, 4.040 Bore, 4.000 Stroke, 6.125 in. Rod, Piston -1cc Dome, Steel Rings+Race Bearings -Coated/GP Rings opt..

Part Number: SUM-RALS60111

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Forged Rotating Assembly, 6.6L/402Cid, 4.000 Bore, 4.000 Stroke, 6.125 in. Rod, Piston -1cc Dome, Steel Rings+Race Bearings -Coated/GP Rings opt..

Part Number: SUM-RALS60112

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Forged Rotating Assembly, 6.4L/403Cid, 4.005 Bore, 4.000 Stroke, 6.125 in. Rod, Piston -1cc Dome, Steel Rings+Race Bearings -Coated/GP Rings opt..

Part Number: SUM-RALS60109

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Forged Rotating Assembly, 6.0L/370Cid, 4.030 Bore, 3.622 Stroke, 6.098 in. Rod, Piston -12cc Dome, Steel Rings+Race Bearings -Coated/GP Rings opt..

Part Number: SUM-RALS60050

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Forged Rotating Assembly, 6.0L/364Cid, 4.000 Bore, 3.622 Stroke, 6.098 in. Rod, Piston -8cc Dome, Steel Rings+Race Bearings -Coated/GP Rings opt..

Part Number: SUM-RALS60046

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Forged Rotating Assembly, 6.4L/403Cid, 4.005 Bore, 4.000 Stroke, 6.125 in. Rod, Piston 20cc Dish, Steel Rings+Race Bearings -Coated/GP Rings opt..

Part Number: SUM-RALS60068

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Forged Rotating Assembly, 6.7L/410Cid, 4.040 Bore, 4.000 Stroke, 6.125 in. Rod, Piston -1cc Dome, Steel Rings+Race Bearings -Coated/GP Rings opt..

Part Number: SUM-RALS60115

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Forged Rotating Assembly, 6.0L/370Cid, 4.030 Bore, 3.622 Stroke, 6.098 in. Rod, Piston 3cc, Steel Rings+Race Bearings -Coated/GP Rings opt..

Part Number: SUM-RALS60015

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Forged Rotating Assembly, 6.0L/365Cid, 4.005 Bore, 3.622 Stroke, 6.098 in. Rod, Piston -8cc Dome, Steel Rings+Race Bearings -Coated/GP Rings opt..

Part Number: SUM-RALS60047

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Forged Rotating Assembly, 6.0L/365Cid, 4.005 Bore, 3.622 Stroke, 6.098 in. Rod, Piston -8cc Dome, Steel Rings+Race Bearings -Coated/GP Rings opt..

Part Number: SUM-RALS60018

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Forged Rotating Assembly, 6.4L/396Cid, 4.040 Bore, 3.858 Stroke, 6.125 in. Rod, Piston 3cc, Steel Rings+Race Bearings -Coated/GP Rings opt..

Part Number: SUM-RALS60066

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Forged Rotating Assembly, 6.4L/403Cid, 4.005 Bore, 4.000 Stroke, 6.125 in. Rod, Piston -1cc Dome, Steel Rings+Race Bearings -Coated/GP Rings opt..

Part Number: SUM-RALS60088

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Forged Rotating Assembly, 6.7L/410Cid, 4.040 Bore, 4.000 Stroke, 6.125 in. Rod, Piston -1cc Dome, Steel Rings+Race Bearings -Coated/GP Rings opt..

Part Number: SUM-RALS60086

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Pro LS 4340 Rotating Assembly, 371 Cid., 4.040 bore, 3.622 stroke, 24X, 6.098 rod, 12cc dish, 9.8:1 @ 65cc, 9.3:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R243604012

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Estimated Ship Date: Monday 10/19/2026 if shipped by air

Pro LS Rotating Assembly, 371 Cid., 4.040 bore, 3.622 stroke, 24X, 6.125 rod, 2cc Flat Top, 10.9:1 @ 65cc, 10.3:1 @ 70cc, File-Fit rings, H Bearings

Part Number: SUM-R2436L0402

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Estimated Ship Date: Monday 10/19/2026 if shipped by air

Pro LS 4340 Rotating Assembly, 378 Cid., 4.080 bore, 3.622 stroke, 58x, 6.125 rod, 2cc dome, 11.6:1 @ 65cc, 11:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R5836L0802

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Estimated Ship Date: Monday 10/19/2026 if shipped by air

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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Estimated Ship Date: Monday 10/19/2026 if shipped by air