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Part Number:
JE-170855

JE Pistons 170855 Forged 331/ 347 Heavy Duty Flat Top 4.030 Bore

JE Pistons, SBF 331, Bore 4.030, Stroke 3.250, Rod Length 5.400, Flat Top -5.0cc, 451 Grams, Set of 8

Special Price $987.29 Regular Price $1,096.99
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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.
The Industry standard for rock-solid durability in a Heavy Duty Flat Top piston! An excellent choice for the gas pump, nitrous, or race fuel/ E85 forced induction combinations. Will accommodate oversized valves and long duration, tight lobe separation cams. Precision CNC machined ring grooves accept 1/16", 1/16", 3/16" rings. Pin upgrade recommended above 700hp. Recommended ring sets contain low tension oil ring.

Includes:
  • Pin #927-2750-15-51S (130g)
  • Double spiro locks (#927-042-CS)
  • Contact Reduction Grooves

    Compression Ratio:
  • 56cc 10.8:1
  • 60cc 10.2:1
  • 64cc 9.7:1
    Note: *Oil rail supports included. Made to Order.*
  • More Information
    CNC Part Number JE-170855
    Price $1,096.99
    Manufacturer's Part Number 170855
    Brands JE
    Part Types Engine Piston
    Departments Parts
    Vehicle Make Ford SB
    Bore Size 4.030
    Crankshaft Stroke 3.250
    Rod Length 5.400
    Piston Type Flat Top
    Compression Height 1.175
    Piston Material 2618 Forged
    Piston Ring Size 1/16 1/16 3/16
    Wrist Pin Size 0.927
    Custom Notices ⚠ PROP 65 WARNING

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