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Part Number:
DRP-61000

61000 Diamond Pistons Pontiac 455 Forged Flat Top 4.155 Bore

Fits Pontiac 455, Bore 4.155, Stroke 4.210, Rod Length 6.625, Flat Top -4.6cc, Set of 8 Pistons, Made to order

$1,279.95
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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.
Diamond Pistons are some of the best aftermarket pistons on the market. Trust your new engine with a set of Diamond Pistons
  • Designed for use with OEM & Aftermarket cylinder heads
  • Ratios figured for .040 head gasket @ 10.225 deck
  • Premium 1/16 1/16 3/16 ring package available
  • Premium 8620 .155" wall wrist pins included
  • Top Ring down = .200"
  • Accommodates a maximum intake valve size of 2.150"
  • Valve relief depth= .209" intake and symmetrical exhaust


    Compression Ratio with 72cc Heads 11.4:1
    Compression Ratio with 77cc Heads 10.8:1
    Compression Ratio with 87cc Heads 9.9:1
    Piston weight - 505 Grams
    Made to order
  • More Information
    CNC Part Number DRP-61000
    Price $1,279.95
    Manufacturer's Part Number 61000
    Brands Diamond
    Part Types Engine Piston
    Departments Parts
    Vehicle Make Pontiac
    Bore Size 4.155
    Crankshaft Stroke 4.210
    Rod Length 6.625
    Piston Type Flat Top
    Compression Height 1.480
    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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