Availability
Engine Rotating Assemblies & Rebuild Kits
Pro LS 4340 Rotating Assembly, 346 Cid., 3.898 bore, 3.622 stroke, 24X, 6.125 rod, 7cc dish, 9.7:1 @ 65cc, 9.4:1 @ 68cc, File-Fit Rings, H Bearings
Part Number: SUM-R2436L8987
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Pro LS 4340 Rotating Assembly, 376 Cid., 4.065 bore, 3.622 stroke, 24X, 6.125 rod, 12cc dish, 9.9:1 @ 65cc, 9.4:1 @ 70cc, File-Fit rings, H Bearings
Part Number: SUM-R2436L06512
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Engine Rotating Kits, Pro LS Crank and Rod Kits, Forged 4340 Steel, 6.098 in. Connecting Rod Length, 4.000 in. Stroke, Chevy, 5.3L, 5.7L, 6.0L, Kit
Part Number: SUM-CR4024098
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Pro LS 4340 Piston and Rod Kit, 367 Cid., 3.820 bore, 4.000 stroke, 6.125 rod, 5cc dish, 11:1 @ 61cc, 10.5:1 @ 65cc, File-Fit Rings
Part Number: SUM-PR408205
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Pro LS Piston and Rod Kit, 371 Cid., 4.040 bore, 3.622 stroke, 6.098 rod, 2cc Flat Top, 10.9:1 @ 65cc, 10.3:1 @ 70cc, File-Fit Rings
Part Number: SUM-PR360402
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Pro LS 4340 Rotating Assembly, 377 Cid., 4.070 bore, 3.622 stroke, 24X, 6.125 rod, 2cc dome, 11.6:1 @ 65cc, 10.9:1 @ 70cc, File-Fit Rings, H Bearings
Part Number: SUM-R2436L0702
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Pro LS 4340 Rotating Assembly, 383 Cid., 3.903 bore, 4.000 stroke, 58x, 6.125 rod, 16cc dish, 9.7:1 @ 65cc, 9.4:1 @ 68cc, File-Fit Rings, H Bearings
Part Number: SUM-R584090316
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
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
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Pro LS 4340 Rotating Assembly, 376 Cid., 4.065 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-R5836L0652
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Pro LS 4340 Rotating Assembly, 347 Cid., 3.903 bore, 3.622 stroke, 58x, 6.125 rod, 3cc dome, 11:1 @ 65cc, 10.6:1 @ 68cc, File-Fit Rings, H Bearings
Part Number: SUM-R5836L9033
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
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
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Pro LS 4340 Rotating Assembly, 378 Cid., 4.080 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-R5836L08012
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
REBUILD KIT
Part Number: FEM-MK660A632
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
ENGINE REBUILD KIT
Part Number: FEM-MKP7024-411
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Engine Re-Ring, Cast, 4.185 in. Bore, .020 in. Rod, Chevy, 400, Kit
Part Number: FEM-205-118-32
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Engine Re-Ring, Moly, 4.040 in. Bore, Standard Rod, Standard Main, Ford, 351/400, Kit
Part Number: FEM-205-624M400
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Engine Re-Ring, Cast, 4.060 in. Bore, .010 in. Rod, .030 in. Main, Chevy, 350, Kit
Part Number: FEM-205-130M613
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Engine Re-Ring, Moly, 4 in. Bore, Standard Rod, Standard Main, Chevy, 350, Kit
Part Number: FEM-205-6279M000
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Engine Re-Ring, Moly, 4.165 in. Bore, .020 in. Rod, .010 in. Main, Chevy, 400, Kit
Part Number: FEM-205-618M421
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Engine Re-Ring, Cast, 4 in. Bore, Standard Rod, Standard Main, Chevy, 350, Kit
Part Number: FEM-2051153M-000
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Engine Re-Ring, Cast, 4.000 in. Bore, .030 in. Rod, .020 in. Main, Chevy, 350, Kit
Part Number: FEM-205130M-032
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Engine Re-Ring, Moly, 4.000 in. Bore, .010 in. Rod, .010 in. Main, Ford, 351W, Kit
Part Number: FEM-205625M-011
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Engine Re-Ring, Cast, 4 in. Bore, .010 in. Rod, Chevy, Kit
Part Number: FEM-205130-01
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Engine Re-Ring, Cast, 3.736 in. Bore, Standard Rod, Standard Main, Chevy, 305, Kit
Part Number: FEM-205147M-000
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Engine Re-Ring, Moly, 4 in. Bore, Standard Rod, Dodge, 360, Kit
Part Number: FEM-205622-00
Not Yet Reviewed
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
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