Icon Pistons IC9986C-STD GM LS FHR Coated Flat Top 2.9cc Bore 3.780

GM LS 4.8L and 5.3L, Bore 3.780, Stroke 3.622, Rod Length 6.125, Flat Top 2.9cc, Compression Height 1.304, Set of 8 Pistons

Special Price $506.55 Regular Price $522.22

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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

GM Icon Formed Head Relief Pistons are forged from 4032 alloy. With an 11% silicon content 4032 alloy controls the thermal expansion so a tighter piston to wall clearance may be used over a 2618 alloy. The additional silicon also decreases the wear on the skirts and pin bores. This material makes these Icon Pistons ideal for street and mild boosted applications.

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 included

1.5mm 1.5mm 3.0mm rings not included

Compression Ratio 5.3L - 64.5cc 9.8:1 - 68.4cc 9.1:1

Advertised piston weight 427 grams, 121 gram wrist pin

Note: Standard bore size is 3.780

Note: M42 Skirt Coating Standard

Specifications

More Information
CNC Part Number	UEM-IC9986C-STD
Price	$522.22
Manufacturer's Part Number	IC9986C-STD
Brands	Icon
Part Types	Engine Piston
Departments	Parts
Vehicle Make	Chevy LS
Bore Size	3.780
Crankshaft Stroke	3.622
Rod Length	6.125
Piston Type	Flat Top
Compression Height	1.304
Piston Material	4032 Forged
Piston Ring Size	1.5mm 1.5mm 3.0mm
Wrist Pin Size	0.927
Custom Notices	⚠ PROP 65 WARNING

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