Part Number
SRP-153983

SRP Pistons 153983 Forged Pontiac 400 Flat Top 4.160 Bore

SRP Pistons, Pontiac 407, Bore 4.160, Stroke 3.750, Rod Length 6.625, Flat Top -5.0cc, 520 Grams, Set of 8

Special Price $674.92 Regular Price $766.95
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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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SRP Professional pistons are the most advanced lightweight FSR forging that offers superior strength. SRP pistons are up to 20% lighter than traditional equivalent pistons. High-silicon 4032 aluminum alloy for reduced piston-to-wall clearance and quiet operation. Accumulator grooves for improved ring seal. Designed for normally aspirated or moderate forced induction nitrous engine applications. SRP professional pistons come standard with high-performance skirt coating and low drag performance piston rings.

Includes:
  • 4032 low expansion high silicon aluminum alloy heat treated to SRP specifications
  • Forced Pin Oiler for the increased wrist pin lubrication
  • Pin fitting and double spiro locks included
  • 980-2750-150 wall wrist pin (135g) included
  • CNC Machined ring grooves accept 1/16, 1/16, 3/16 rings (Sold Separately)

    Compression Ratio:
  • 72cc 10.9:1
  • 80cc 10.3:1
  • 84cc 9.4:1
  • More Information
    Price $766.95
    Vehicle Make Pontiac
    Bore Size 4.160
    Crankshaft Stroke 3.750
    Rod Length 6.625
    Piston Type Flat Top
    Compression Height 1.690
    Piston Material 4032 Forged
    Piston Ring Size 1/16 1/16 3/16
    Wrist Pin Size 0.980
    Custom Notices ⚠ PROP 65 WARNING
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