Diamond 12391 Big Block Chevrolet - Pro 3-D - Dome Pistons, 42.0cc, 4.600" Bore, 4.375" Stroke, 6.385" Rod, 1.218" CD, .990" x 2.930" Pin

Part Number	12391
Bore	4.600"
Stroke	4.375"
Rod Length	6.385"
Comp. Height	1.218"
Wrist Pin	.990" x 2.930"
Top Ring Down	.250" - .300"
Piston Material	2618 Alloy
Piston Style	Dome
Volume	42.0cc
Ring Stack	.043" x .043" x  3mm

  Available Options

• Moly Skirt Coating
• Ceramic Dome Coating
• Hard Anodized Coating
• Double Diamond Coating (Hard Anodized and Moly Skirt)
• H-13 Tool Steel Wrist Pins 0.165" Wall DLC Coated
• 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 Wrist Pins 0.175" Wall
• H-13 Tool Steel Wrist Pins 0.185" Wall
• H-13 Tool Steel Wrist Pins 0.195" Wall
• H-13 Tool Steel Wrist Pins 0.200" Wall
• H-13 Tool Steel Wrist Pins 0.205" Wall
• H-13 Tool Steel Wrist Pins 0.215" Wall
• H-13 Tool Steel Wrist Pins 0.220" Wall
• H-13 Tool Steel Wrist Pins 0.225" Wall
• H-13 Tool Steel Wrist Pins 0.250" Wall

Recommended Piston Ring Set- 09224600