| GM LS 4.8L and 5.3L, Bore 3.898, Stroke 3.622, Rod Length 6.098, Flat Top 3.2cc, Compression Height 1.331, Set of 8 Pistons
RING PACK INCLUDED
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 included
* Compression Ratio 5.3L - 64.5cc 10.3:1 - 68.4cc 9.8:1
* Advertised piston weight 499 grams, 124 gram wrist pin
* Note: Standard bore size is 3.898
* Note: M42 Skirt Coating Standard
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