Diamond 31729 Small Block Ford Twisted Wedge / Race - Flat Top Pistons -7.7cc , 4.125" Bore, 4.000" Stroke, 6.200" Rod, 1.270" CD, .927" x 2.750" Pin

Compression Ratios

58cc	62cc	66cc
12.6:1	12.0:1	11.5:1

*Includes Oil Rail Supports

Part Number	31729
Bore	4.125"
Stroke	4.000"
Rod Length	6.200"
Comp. Height	1.270"
Wrist Pin	.927" x 2.750"
Top Ring Down	.300"
Piston Material	2618 Alloy
Piston Style	Flat Top
Volume	-7.7cc
Ring Stack	1/16" x 1/16" x 3/16"

  Available Options

• Moly Skirt Coating
  
• Ceramic Dome Coating
  
• 4130 Chrome Moly Wrist Pins 0.155" Wall
• 4130 Chrome Moly Coated Wrist Pins 0.155" Wall
  
• H-13 Tool Steel Wrist Pins 0.145" Wall
  
• H-13 Tool Steel Wrist Pins 0.155" Wall
• H-13 Tool Steel Wrist Pins 0.165" Wall
• H-13 Tool Steel Coated Wrist Pins 0.145" Wall 
• H-13 Tool Steel Coated Wrist Pins 0.155" Wall
• H-13 Tool Steel Coated Wrist Pins 0.165" Wall
• 9310 Endurance Alloy Wrist Pins 0.145" Wall
• 9310 Endurance Alloy Wrist Pins 0.155" Wall
• 9310 Endurance Alloy Wrist Pins 0.165" Wall

Recommended Piston Ring Set- 09024125