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    Part Number:
    CS-5412-DRP

    Compstar BBC 565 571 Balanced Rotating Assembly, 14.6:1 Diamond Pistons, Fits SR20 & Dart 20 Degree Heads

    Compstar
    Callies

    BBC, Big Block Chevy 565 566 568 571 Rotating Assembly, Compstar Crankshaft 4.250, Compstar H Beam Rods 6.385, H Series Bearings, +27.94cc Competition Diamond Pistons & Rings, 2 Piece Rear Main Seal, Balanced Assembly, Pistons fit Brodix SR20 and Dart 20 Degree Heads

    $4,155.95
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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.
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    Callies Compstar Big Block Chevy rotating assembly kits offer quality and reliability you can count on. Featuring fully counterweighted forged crankshafts, H beam connecting rods with ARPL19 rod bolts, forged pistons, file fit pistons rings, performance bearings, these kits are designed to make horsepower. Kit option upgrades are recommended for extreme engine builds. Higher horsepower applications please contact us for other kit options.

  • Callies Compstar 4340 Forged Crankshaft, 4.250 Stroke, 2 Piece rear main seal (Gen IV) *Center counter weighted*
  • Callies Compstar H beam rods, 6.385 Length with ARP L19 Rod Bolts
  • Diamond 2618 Competition Series Dome Pistons, (1.270 C/H)
  • Inboard forging, Moly skirt coated, H13 .185 wall pins, vertical gas ported
  • Diamond / Total Seal AP steel rings .043 steel top, .043 napier 2nd, 3/16 oil ring
  • High performance H series main and rod bearings
  • Pistons are designed specifically to work with Brodix SR20 and Dart 20 degree cylinder heads
  • Compression ratio w/95cc chamber: 14.6:1
  • Compression ratio w/118cc chamber:
  • Compression ratio w/124cc chamber:
  • Calculated deck Height 9.780" (Short Deck)
  • *This rotating assembly kit has been Internally balanced in-house by CNC-Motorsports*
  • Note: Pistons will work with 2.400 / 1.800 valve size
    • Specifications
    More Information
    CNC Part Number CS-5412-DRP
    Price $4,155.95
    Sold As Kit
    Manufacturer's Part Number CS-5412-DRP
    Brands Callies, Compstar
    Part Types Engine Rotating Assembly Kit
    Departments Parts
    Vehicle Make Chevy BB
    Balanced Assembly Yes
    Balance Type Internal
    Crankshaft Material 4340 Forged Steel
    Crankshaft Stroke 4.250
    Piston Brand Diamond
    Piston Type Dome
    Rod Length 6.385
    Rear Main Seal 2 Piece
    Piston Material Forged
    Custom Notices ⚠ PROP 65 WARNING

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