Engine Kits & Rotating Assemblies

Pro LS 4340 Rotating Assembly, 370 Cid., 4.040 bore, 3.622 stroke, 58x, 6.125 rod, 12cc Dish, 9.8:1 @ 65cc, 9.3:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R5836L04012

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

• Special Order

Pro LS 4340 Rotating Assembly, 359 Cid., 3.780 bore, 4.000 stroke, 58x, 6.125 rod, 12cc dish, 10:1 @ 61cc, 9.6:1 @ 65cc, File-Fit Rings, H Bearings

Part Number: SUM-R584078012

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

• Special Order

Pro LS 4340 Rotating Assembly, 360 Cid., 3.785 bore, 4.000 stroke, 58x, 6.125 rod, 12cc dish, 10:1 @ 61cc, 9.6:1 @ 65cc, File-Fit Rings, H Bearings

Part Number: SUM-R584078512

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

• Special Order

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

Not Yet Reviewed

• Special Order

Pro LS 4340 Rotating Assembly, 403 Cid., 4.005 bore, 4.000 stroke, 24X, 6.125 rod, 20cc dish, 9.7:1 @ 65cc, 9.3:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R244000520

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

• Special Order

Pro LS 4340 Rotating Assembly, 410 Cid., 4.040 bore, 4.000 stroke, 24X, 6.125 rod, 20cc dish, 9.8:1 @ 65cc, 9.4:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R244004020

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

• Special Order

Pro LS 4340 Rotating Assembly, 417 Cid., 4.080 bore, 4.000 stroke, 24X, 6.125 rod, 21cc dish, 9.9:1 @ 65cc, 9.5:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R244008021

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

• Special Order

Pro LS 4340 Rotating Assembly, 359 Cid., 3.780 bore, 4.000 stroke, 24X, 6.125 rod, 12cc dish, 10:1 @ 61cc, 9.6:1 @ 65cc, File-Fit Rings, H Bearings

Part Number: SUM-R244078012

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

• Special Order

Pro LS Rotating Assembly, 326 Cid, 3.785 bore, Standard 3.622 stroke, 24X, 6.098 rod, 2cc dome, 10.9:1 @ 61cc, 10.4:1 @ 65cc, File-Fit ring, H Bearing

Part Number: SUM-R24367852

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

• Special Order

HD OVERHAUL KIT

Part Number: CLE-4801022

Not Yet Reviewed

Estimated Ship Date: Sep 29, 2025 if ordered today

• Free Shipping
• Special Order

HD OVERHAUL KIT

Part Number: CLE-4891023

Not Yet Reviewed

Estimated Ship Date: Sep 29, 2025 if ordered today

• Free Shipping
• Special Order

IN-FRAME KIT

Part Number: CLE-4275036

Not Yet Reviewed

Estimated Ship Date: Sep 29, 2025 if ordered today

• Free Shipping
• Special Order

HD OVERHAUL KIT

Part Number: CLE-4681124

Not Yet Reviewed

Estimated Ship Date: Sep 29, 2025 if ordered today

• Free Shipping
• Special Order

HD OVERHAUL KIT STD AVAILABLE

Part Number: CLE-4681128

Not Yet Reviewed

Estimated Ship Date: Sep 29, 2025 if ordered today

• Free Shipping
• Special Order

BALANCED COMPETITION ASSEMBLY CHEV 454

Part Number: ESP-B11421000

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Free Shipping
• Special Order

Engine Rotating Assembly, Street/Strip, Cast Crank, Forged Pistons, I-Beam Rods, Chevy, Big Block, Kit

Part Number: ESP-B18020L060

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Free Shipping
• Special Order

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

Part Number: ESP-11012060

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Free Shipping
• Special Order

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

Part Number: ESP-B12012030

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Sep 10, 2025 if ordered today

• Free Shipping
• Special Order

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

Part Number: ESP-B12055030

Not Yet Reviewed

Estimated Ship Date: Sep 10, 2025 if ordered today

• Free Shipping
• Special Order

ROTATING ASSEMBLY

Part Number: ESP-B637003905

Not Yet Reviewed

Estimated Ship Date: Sep 10, 2025 if ordered today

• Free Shipping
• Special Order

ROTATING ASSEMBLY

Part Number: ESP-64138030

Not Yet Reviewed

Estimated Ship Date: Sep 15, 2025 if ordered today

• Free Shipping
• Special Order

ROTATING ASSEMBLY

Part Number: ESP-65010030

Not Yet Reviewed

Estimated Ship Date: Sep 15, 2025 if ordered today

• Free Shipping
• Special Order

Competition assembly, 428 CID, -20cc Mahle

Part Number: ESP-129554065

Not Yet Reviewed

Estimated Ship Date: Sep 15, 2025 if ordered today

• Free Shipping
• Special Order

ROTATING ASSEMBLY UNBALANCED

Part Number: ESP-14140030

Not Yet Reviewed

Estimated Ship Date: Sep 15, 2025 if ordered today

• Free Shipping
• Special Order

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

Part Number: SCA-1-47410BI

Not Yet Reviewed

Estimated Ship Date: Oct 22, 2025 if ordered today

• Free Shipping
• Special Order