Racetec 1001392 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 1/16 in., 1/16 in., 3/16 in. 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 1001392 Racetec Flat Top Piston Set Specs:

• Engine Family: Big Block Ford 460
• Displacement reference: 557 cu. in. (9.1L)
• Bore: 4.440 in.
• Stroke: 4.500 in.
• Rod Length: 6.700 in.
• Compression Height: 1.350 in.
• Crown Volume: -3 cc
• Piston Style: Flat Top w/2 Valve Reliefs
• Alloy: 2618
• Wrist Pin Diameter: 0.990 in.
• Ring Grooves: 1/16 in. Top, 1/16 in. Second, 3/16 in. Oil

RaceTec 1001392 RaceTec Flat Top Piston Set Notes:

• Requires RaceTec AT 8445 Ring Set or Equivalent (Sold Separately)
• Compression Ratios:
  • 14.1 @ w/74 cc Heads
  • 13.3 @ w/80 cc Heads
  • 11 @ w/94 cc Heads