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Part Number:
CNC-1154-MR

SB Chevy 427/434 Molnar Rotating Assembly - 12.3:1 JE Flat Top Pistons

SB Chevy 427 434, Rotating Assembly, Molnar 4340 Forged Crankshaft 4.000 Stroke, 350 or 400 Main, 6.000 H Beam Rods, JE -5cc Flat Top Pistons, 2-PC Seal

$3,022.95
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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.

Molnar 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 1250 horsepower applications. Higher horsepower applications please contact us for kit option upgrades.

  • Molnar 4340 forged steel crankshaft, 2pc rear main seal
  • Molnar 4340 forged steel H beam connecting rods with ARP2000 rod bolts
  • JE 2618 forged -5cc Flat Top pistons, .150 wall wrist pins
  • Performance file fit piston ring set 1/16 1/16 3/16
  • H series performance race main and rod bearings
  • Rotating assembly kit has not been balanced
  • Compression Ratio with 58cc 13.3:1
  • Compression Ratio with 64cc 12.3:1
  • Compression Ratio with 76cc 10.8:1

  • More Information
    CNC Part Number CNC-1154-MR
    Price $3,022.95
    Manufacturer's Part Number 1154-MR
    Brands JE, Molnar
    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 JE
    Piston Type Flat Top
    Rod Length 6.000
    Rear Main Seal 2 Piece
    Piston Material 2618 Forged
    Custom Notices ⚠ PROP 65 WARNING
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