Icon Pistons IC786-040 Fits BBC 427 489 Dome 12cc Bore 4.290

Fits BB Chevy 427-489, Bore 4.290, fits 427 3.760 Stroke with 6.385 Rod, fits 489 4.250 Stroke with 6.135 Rod, 623 grams, Dome 12cc, Set of 8 Pistons

Special Price $867.69 Regular Price $894.53

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⚠ PROP 65 WARNING

⚠ WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer. Please contact us to obtain a list of harmful chemicals. For more information, go to www.P65Warnings.ca.gov.

Description

Icon Forged Pistons are forged from high ductile 2618 alloy. With a 1% silicon content 2618 alloy they are formulated and heat treated for the most demanding performance applications such as very high compression ratios, boosted application and nitrous

Crown and valve reliefs are cnc machined

Top land mini groove technology

Skirts machined by UEM's unique in house built cnc machines

Accumulator groove to help eliminate flutter and maximize ring seal

Skirt and pin boss struts designed to withstand heavy loads from high cylinder pressures

Wrist pins and spiral lock rings included

1/16 1/16 3/16 rings not included

Compression Ratio 427 96.5cc 10.3:1, 108cc 9.3:1, 119cc 8.5:1

Compression Ratio 489 96.5cc 11.7:1, 115cc 9.9:1, 119cc 9.6:1

Advertised piston weight 623 grams, 141 gram wrist pin

OE Deck Height 9.800"

Note: Standard bore size is 4.250

Notes: Centered Pin, Closed Chamber Design, Edelbrock and O.E. Heads

Notes: Ships direct from manufacturer

Specifications

More Information
CNC Part Number	UEM-IC786-040
Price	$894.53
Manufacturer's Part Number	IC786-040
Brands	Icon
Part Types	Engine Piston
Departments	Parts
Vehicle Make	Chevy BB
Bore Size	4.290
Crankshaft Stroke	3.760, 4.250
Rod Length	6.135, 6.385
Piston Type	Dome
Compression Height	1.520
Piston Material	2618 Forged
Piston Ring Size	1/16 1/16 3/16
Wrist Pin Size	0.990
Custom Notices	⚠ PROP 65 WARNING

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