Racetec 1001329 RaceTec Dome 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 1001329 Racetec Dome Piston Set Specs:

• Engine Family: 20-Degree Small Block Ford 351
• Displacement reference: 333 cu. in. (5.5L)
• Bore: 4.040 in.
• Stroke: 3.250 in.
• Rod Length: 5.400 in.
• Compression Height: 1.175 in.
• Crown Volume: 12 cc
• Piston Style: Dome
• Alloy: 2618
• Wrist Pin Diameter: 0.927 in.
• Ring Grooves: 1.5 mm Top, 1.5 mm Second, 3.0 mm Oil

RaceTec 1001329 RaceTec Dome Piston Set Notes:

• Requires RaceTec AT 4040 Ring Set or Equivalent (Sold Separately)
• Compression Ratios:
  • 13.8 @ w/56 cc Heads
  • 12.9 @ w/60 cc Heads
  • 12.2 @ w/64 cc Heads
• Includes oil rail supports
• Will not fit Twisted Wedge heads