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Part Number:
CNC-1215-CS

SB Chevy 427/434 Compstar Rotating Assembly - 14.7:1 Diamond Race Dome Pistons

SB Chevy 427 434, Rotating Assembly, Compstar 4340 Forged Crankshaft 4.000 Stroke, 350 or 400 Main, 6.000 H Beam Rods, Diamond +9cc Race Dome Pistons, 2-PC Seal

$3,486.95
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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 rotating assembly kits offer quality and reliability you can count on. Featuring fully forged crankshafts, connecting rods and pistons these kits are designed to make horsepower. Conservatively rated to support 1000 horsepower applications. Higher horsepower applications please contact us for kit option upgrades.

  • Compstar 4340 forged steel crankshaft, 2pc rear main seal
  • Compstar 4340 forged steel H beam connecting rods with ARP2000 rod bolts
  • Diamond Race Dome 2618 forged pistons, vertical gas ports
  • Performance file fit piston ring set .043 .043 3.0mm
  • H series performance main and rod bearings
  • Rotating assembly comes unbalanced, balancing is required before installation.
  • Compression Ratio with 58cc 16.1:1
  • Compression Ratio with 64cc 14.7:1
  • Compression Ratio with 70cc 13.5:1
  • Wrist pin upgrade recommended for applications higher than 750 horsepower
  • More Information
    CNC Part Number CNC-1215-CS
    Price $3,486.95
    Manufacturer's Part Number 1215-CS
    Brands Compstar, Diamond
    Part Types Engine Rotating Assembly Kit
    Departments Parts
    Vehicle Make SB Chevy
    Balanced Assembly No
    Balance Type Internal
    Crankshaft Material 4340 Forged Steel
    Crankshaft Stroke 4.000
    Piston Brand Diamond
    Piston Type Dome
    Rod Length 6.000
    Rear Main Seal 2 Piece
    Piston Material 2618 Forged
    Custom Notices ⚠ PROP 65 WARNING
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