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1001322 RaceTec Forged Flat Top Piston Set for Small Block Ford 351 20-Degree Engines [4.040 in. Bore]
InfoVehicle Info Needed
RACETEC PISTONSPART NUMBER: 613-1001322

1001322 RaceTec Forged Flat Top Piston Set for Small Block Ford 351 20-Degree Engines [4.040 in. Bore]

$1,09700
ShippingShips on 12/14/2026
Lowest PriceLowest Price Guarantee

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RaceTec Forged Piston Set
  • SB Ford 351 20-Degree
  • 4.040 in. Bore
  • Forged 2618 Aluminum
  • 4 in. Stroke
  • 6.300 in. Rod Length
  • 1.200 in. Compression Height
  • -5.2 cc Crown Volume
  • 1.5 x 1.5 x 3.0 mm Ring Grooves
  • Set of 8

    Racetec 1001322 RaceTec Flat Top Piston Set Features:

    • Manufactured on 2618 material forgings that will accept mild blown or nitrous applications
    • CNC Precision used in every manufacturing operation
    • Valve pockets machined for oversized valves and high lift cams
    • Critically machined ring grooves for 1.5mm, 1.5mm, 3.0mm rings
    • Top ring land gas distribution grooves to enhance performance and improve ring seal
    • 912-2700-51-15C or 927-2700-51-15C wrist pins, pin fit, wire locks, broached double pin oilers, and accumulator groove are included at no extra charge
    • Diamond tooling used throughout production including ring grooves and skirts

    RaceTec 1001322 Racetec Flat Top Piston Set Specs:

    • Engine Family: 20-Degree Small Block Ford 351
    • Displacement reference: 410 cu. in. (6.7L)
    • Bore: 4.040 in.
    • Stroke: 4 in.
    • Rod Length: 6.300 in.
    • Compression Height: 1.200 in.
    • Crown Volume: -5.2 cc
    • Piston Style: Flat Top w/2 Valve Reliefs
    • Alloy: 2618
    • Wrist Pin Diameter: 0.927 in.
    • Ring Grooves: 1.5 mm Top, 1.5 mm Second, 3.0 mm Oil

    RaceTec 1001322 RaceTec Flat Top Piston Set Notes:

    • Requires RaceTec AT 4040 Ring Set or Equivalent (Sold Separately)
    • Compression Ratios:
      • 12.9 @ w/56 cc Heads
      • 12.3 @ w/60 cc Heads
      • 11.7 @ w/64 cc Heads
    • Will not fit Twisted Wedge heads
    • Part TypePiston
    BrandRACETEC PISTONS
    Package Height8.0
    Package Width12.0
    Package Length13.0
    Weight12.0 PG
    Part CategoryPerformance Parts
    Pin Lock Rings IncludedYes
    Compression Height (In)1.2
    Bore (In)4.04
    Wrist Pin StylePress or Full Floating
    QuantitySet of 8
    Piston Head Volume-5.2cc
    Engine Make/SizeFord Small Block
    Piston StyleFlat Top
    Compression Ratio56cc-12.9, 60cc-12.3, 64cc-11.7
    Ring Thickness1.5 x 1.5 x 3.0 mm
    Piston MaterialForged 2618
    Pin Diameter (In)0.927
    Part FitmentSemi Universal
    Wrist Pin IncludedYes
    Snap Rings IncludedYes
    Vendor Part Number1001322
    Package Qty1
    Package TypeEA
    Some parts are not legal for use in California or other states with similar laws / regulations
    p65 warning