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Part Number:
ATT-1000644

Auto Tec Pistons 1000644 Forged Dish 4.020 Bore, SB Chevy 381

Auto Tec Pistons, SBC 381, Bore 4.020, Stroke 3.750, Rod Length 5.565, Dish -18.5cc, Set of 8 Pistons

$799.00
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DROP SHIP
This product is a non-stocking item for CNC-Motorsports and will be shipped directly from the manufacturer / supplier.
⚠ 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.
Auto Tec pistons are manufactured on a forged side relief 4032 alloy pistons which is great for street/strip applications. Auto Tec pistons piston offer standard features like broached pin oilers for increased wrist pin lubrication, accumulator grooves, pin fitting wrist pins, wire locks included and 927-2700-51-15C wall wrist pin included. Auto Tec pistons have CNC Machined ring grooves that accept 1.5, 1.5, 3mm rings (Rings Sold Separately)

Compression Ratio:
  • 58cc 10.1:1
  • 64cc 9.5:1
  • 70cc 9.0:1
  • More Information
    CNC Part Number ATT-1000644
    Price $799.00
    Manufacturer's Part Number 1000644
    Brands AutoTec
    Part Types Engine Piston
    Departments Parts
    Vehicle Make Chevy SB
    Bore Size 4.020
    Crankshaft Stroke 3.750
    Rod Length 5.565
    Piston Type Dish
    Compression Height 1.550
    Piston Material 4032 Forged
    Piston Ring Size 1.5 1.5 3.0mm
    Wrist Pin Size 0.927

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