Racetec 1001764 AutoTec Flat Top Piston Set Features:

• Manufactured on 4032 material that will accept high performance 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 Heavy Duty Chromoly 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 for unrivaled tolerance control and finish

RaceTec 1001764 Autotec Flat Top Piston Set Specs:

• Engine Family: 312 Y Block Ford
• Displacement reference: 318 cu. in. (5.2L)
• Bore: 3.840 in.
• Stroke: 3.438 in.
• Rod Length: 6.252 in.
• Compression Height: 1.780 in.
• Crown Volume: 0 cc
• Piston Style: Flat Top w/2 Valve Reliefs
• Alloy: 4032
• Wrist Pin Diameter: 0.990 in.
• Ring Grooves: 1.5 mm Top, 1.5 mm Second, 3.0 mm Oil

RaceTec 1001764 AutoTec Flat Top Piston Set Notes:

• Requires RaceTec AT3845 Ring Set or Equivalent (Sold Separately)
• Compression Ratios:
  • 9.3:1 @ w/70 cc Heads
  • 8.8:1 @ w/75 cc Heads
• Will work with most 348 / 409 cylinder heads