Racetec 1000767 AutoTec Closed Chamber Dome 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
• 990-2800-51-15C or 990-2500-51-15C wrist pins, pin fit, wire locks, broached pin oilers and accumulator grooves are included at no extra charge
• Diamond turned skirts

RaceTec 1000767 Autotec Closed Chamber Dome Piston Set Specs:

• Engine Family: Ford 302 Flat Top Twisted Wedge
• Displacement reference: 509 cu. in. (8.3L)
• Bore: 4.500 in.
• Stroke: 4 in.
• Rod Length: 6.135 in.
• Compression Height: 1.645 in.
• Crown Volume: 1 cc
• Piston Style: Closed Chamber Dome
• Alloy: 4032
• Wrist Pin Diameter: 0.990 in.
• Ring Grooves: 1.5 mm Top, 1.5 mm Second, 3.0 mm Oil

RaceTec 1000767 AutoTec Closed Chamber Dome Piston Set Notes:

• Requires RaceTec AT 4500 Ring Set or Equivalent (Sold Separately)
• Compression Ratios:
  • 9.7 @ w/110 cc Heads
  • 9.1 @ w/118 cc Heads