Racetec 1001275 RaceTec Dome Piston Set Features:

• Manufactured on 2618 material forgings that will accept mild 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
• 990-2800-51-15C 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 1001275 Racetec Dome Piston Set Specs:

• Engine Family: Big Block Chevy
• Displacement reference: 439 cu. in. (7.2L)
• Bore: 4.310 in.
• Stroke: 3.760 in.
• Rod Length: 6.135 in.
• Compression Height: 1.765 in.
• Crown Volume: 37 cc
• Piston Style: Dome
• Alloy: 2618
• Wrist Pin Diameter: 0.990 in.
• Ring Grooves: 1.5 mm Top, 1.5 mm Second, 3.0 mm Oil

RaceTec 1001275 RaceTec Dome Piston Set Notes:

• Requires RaceTec AT 4310 Ring Set or Equivalent (Sold Separately)
• Compression Ratios:
  • 12.9 @ w/110 cc Heads
  • 11.5 @ w/118 cc Heads
  • 11.1 @ w/124 cc Heads
• Fits Open Chamber heads
• Will not fit some Edelbrock heads