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1000750 AutoTec Forged Inverted Dome/Milled Dish Piston Set for GM Gen IV LS7 12-Degree Engines [4.125 in. Bore]
InfoVehicle Info Needed
RACETEC PISTONSPART NUMBER: 613-1000750

1000750 AutoTec Forged Inverted Dome/Milled Dish Piston Set for GM Gen IV LS7 12-Degree Engines [4.125 in. Bore]

$79900
ShippingShips on 12/14/2026
Lowest PriceLowest Price Guarantee

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AutoTec Forged Piston Set
  • GM Gen IV LS7 12-Degree
  • 4.125 in. Bore
  • Forged 4032 Aluminum
  • 4 in. Stroke
  • 6.077 in. Rod Length
  • 1.163 in. Compression Height
  • -20.7 cc Crown Volume
  • 1.5 x 1.5 x 3.0 mm Ring Grooves
  • Set of 8

    Racetec 1000750 AutoTec Inverted Dome/Milled Dish Piston Set Features:

    • Manufactured from low-expansion, high-silicon, 4032 material with side reliefs that's excellent for street or strip applications
    • CNC Precision machined ring grooves for 1.5mm, 1.5mm, 3.0mm rings
    • Top ring land gas distribution groove to enhance performance and improve ring seal
    • 927-2250-51-15C wrist pins, pin fit, wire locks, broached pin oilers, and accumulator groove are included at no extra charge
    • Diamond turned skirts
    • Forging designed to clear reluctor wheel in all stroker applications

    RaceTec 1000750 Autotec Inverted Dome/Milled Dish Piston Set Specs:

    • Engine Family: 12-Degree GM Gen IV LS7
    • Displacement reference: 427 cu. in. (7.0L)
    • Bore: 4.125 in.
    • Stroke: 4 in.
    • Rod Length: 6.077 in.
    • Compression Height: 1.163 in.
    • Crown Volume: -20.7 cc
    • Piston Style: Inverted Dome/Milled Dish
    • Alloy: 4032
    • Wrist Pin Diameter: 0.927 in.
    • Ring Grooves: 1.5 mm Top, 1.5 mm Second, 3.0 mm Oil

    RaceTec 1000750 AutoTec Inverted Dome/Milled Dish Piston Set Notes:

    • Requires RaceTec AT 4125 Ring Set or Equivalent (Sold Separately)
    • Compression Ratios:
      • 10.4 @ w/60 cc Heads
      • 10 @ w/64 cc Heads
      • 9.5 @ w/70 cc Heads
    • Includes oil rail supports
    • Part TypePiston
    BrandRACETEC PISTONS
    Package Height6.0
    Package Width12.0
    Package Length12.0
    Weight12.0 PG
    Part CategoryPerformance Parts
    Pin Lock Rings IncludedYes
    Compression Height (In)1.163
    Bore (In)4.125
    Wrist Pin StylePress or Full Floating
    QuantitySet of 8
    Piston Head Volume-20.7cc
    Engine Make/SizeGM Gen III/IV LS
    Piston StyleInverted Dome/Milled Dish
    Compression Ratio60cc-10.4, 64cc-10, 70cc-9.5
    Ring Thickness1.5 x 1.5 x 3.0 mm
    Piston MaterialForged 4032
    Pin Diameter (In)0.927
    Part FitmentSemi Universal
    Wrist Pin IncludedYes
    Snap Rings IncludedYes
    Vendor Part Number1000750
    Package Qty1
    Package TypeEA
    Some parts are not legal for use in California or other states with similar laws / regulations
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