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1000198 AutoTec Forged Flat Top Piston Set for Small Block Chevy 23-Degree Engines [4.145 in. Bore]
InfoVehicle Info Needed
RACETEC PISTONSPART NUMBER: 613-1000198

1000198 AutoTec Forged Flat Top Piston Set for Small Block Chevy 23-Degree Engines [4.145 in. Bore]

$71800
ShippingShips on 12/14/2026
Lowest PriceLowest Price Guarantee

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AutoTec Forged Piston Set
  • Small Block Chevy 23-Degree
  • 4.145 in. Bore
  • Forged 4032 Aluminum
  • 4 in. Stroke
  • 6 in. Rod Length
  • 1 in. Compression Height
  • -5 cc Crown Volume
  • 1.5 x 1.5 x 3.0 mm Ring Grooves
  • Set of 8

    RaceTec 1000198 Autotec Flat Top 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 1.5 mm, 1.5 mm, 3.0 mm rings
    • Top ring land gas distribution groove to enhance performance and improve ring seal
    • 927-2700-51-15C wrist pins, pin fitting, wire locks, broached pin oilers, and accumulator groove are included at no extra charge
    • Diamond turned skirts

    RaceTec 1000198 Autotec Flat Top Piston Set Specs:

    • Engine Family: 23-Degree Small Block Chevy
    • Displacement reference: 432 cu. in. (7.1L)
    • Bore: 4.145 in.
    • Stroke: 4 in.
    • Rod Length: 6 in.
    • Compression Height: 1 in.
    • Crown Volume: -5.0 cc
    • Piston Style: Flat Top w/2 Valve Reliefs
    • Alloy: 4032
    • Wrist Pin Diameter: 0.927 in.
    • Ring Grooves: 1.5 mm Top, 1.5 mm Second, 3.0 mm Oil

    RaceTec 1000198 Autotec Flat Top Piston Set Notes:

    • Requires RaceTec AT 4145 Ring Set or Equivalent (Sold Separately)
    • Compression Ratios:
      • 13.2 @ w/58 cc Heads
      • 12.3 @ w/64 cc Heads
      • 11.4 @ 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
    Bore (In)4.145
    Wrist Pin StylePress or Full Floating
    QuantitySet of 8
    Piston Head Volume-5cc
    Engine Make/SizeChevy Small Block
    Piston StyleFlat Top
    Compression Ratio58cc-13.2, 64cc-12.3, 70cc-11.4
    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 Number1000198
    Package Qty1
    Package TypeEA
    Some parts are not legal for use in California or other states with similar laws / regulations
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