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Part Number:
CS-6420-JE

Compstar 6.2L LS3 376 Balanced Rotating Assembly, 10.4:1 JE Ultra Pistons

6.2L LS3 376 377 378 Rotating Assembly kit, Callies Compstar 4340 Forged steel Crankshaft 3.622 Stroke, Callies Compstar 6.125 H-Beam Rods, -5cc Flat Top JE Ultra Pistons, Nitrided Rings, HP Bearings Included, Internal balanced, 1500 HP Kit

Special Price $4,041.95 Regular Price $4,081.95
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⚠ PROP 65 WARNING
⚠ WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer. Please contact us to obtain a list of harmful chemicals. For more information, go to www.P65Warnings.ca.gov.

Callies Compstar LS3 6.2L rotating assembly kits offer quality and reliability you can count on. Featuring fully counterweighted forged crankshafts, H beam connecting rods and 2618 forged pistons this kits is designed to make horsepower. Rated to support up to 1500 horsepower engine builds with kit connecting rod upgrade. Higher horsepower applications please contact us for other kit options

  • GM Chevy 6.2L LS3 Balanced rotating assembly kit features
  • Callies Compstar 4340 forged steel crankshaft, 3.622 Stroke, 8 counterweight
  • Callies Compstar forged 4340 steel H-Beam rods with 7/16" ARP 2000 rod bolts
  • JE Ultra Series 2618 forged pistons, .200 wall wrist pins, Round wire locks, Coated Skirts, 1.304 C/H (*Combination Valve Pocket fit 12 and 15 degree LS Heads)
  • Thermal Barrier Crown Coating, reducing piston crown temperatures
  • Lateral Gas Ports for better ring seal
  • JE Pro Seal Rings. 1.2mm Gas nitrided steel top ring, 1.5mm Napier second ring, with 3.0mm oil rings for power adders
  • High performance H series rod and main bearings
  • This Rotating assembly kit has been Internal balanced in-house by CNC-Motorsports
  • Compression Ratio with 64cc head 10.9:1
  • Compression Ratio with 68cc head 10.4:1
  • Compression Ratio with 70cc head 10.2:1
  • More Information
    CNC Part Number CS-6420-JE
    Price $4,081.95
    Manufacturer's Part Number CS-6420-JE
    Brands Callies, Compstar, JE
    Part Types Engine Rotating Assembly Kit
    Departments Parts
    Vehicle Make Chevy LS
    Balanced Assembly Yes
    Balance Type Internal
    Crankshaft Material 4340 Forged Steel
    Crankshaft Stroke 3.622
    Piston Brand JE
    Piston Type Flat Top
    Rod Length 6.125
    Piston Material 2618 Forged
    Custom Notices ⚠ PROP 65 WARNING

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