RaceTec 1000237 Autotec 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 1.5 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 1000237 Autotec Dome Piston Set Specs:

• Engine Family: 23-Degree Small Block Chevy
• Displacement reference: 428 cu. in. (7.0L)
• Bore: 4.125 in.
• Stroke: 4 in.
• Rod Length: 6 in.
• Compression Height: 1 in.
• Crown Volume: 0.3 cc
• Piston Style: Dome
• Alloy: 4032
• Wrist Pin Diameter: 0.927 in.
• Ring Grooves: 1.5 mm Top, 1.5 mm Second, 3.0 mm Oil

RaceTec 1000237 Autotec Dome Piston Set Notes:

• Requires RaceTec AT 4125 Ring Set or Equivalent (Sold Separately)
• Compression Ratios:
  • 14.1 @ w/58 cc Heads
  • 13.0 @ w/64 cc Heads
  • 12.1 @ w/70 cc Heads
• Includes oil rail supports