LS3/L92 Flat Top Forged Pistons With Rings 11543-R1-8 D11543-R1-8 4.065" bore, 3.622" stroke, 6.125" rod length, -2cc dome volume DIAMOND LS3 L92 4.065" B -2cc Piston Specifications:

Block: LS3/L92

Bore: 4.065"

Stroke: 3.622"

Rod: 6.125"

Comp Heigh: 1.304"

Weight: 457

Pin: .927 x 2.500"

CC's: Flat Top -2.0cc

Comp Ratio With 62cc Head: 11.5

Comp Ratio With 70cc Head: 10.4

Comp Ratio With 76cc Head: 9.8

Ring Set: 09454065

Piston Features:

3D milling on piston crowns for ready to install finish

Valve pockets designed to work with most aftermarket cylinder heads

Offset pins for quiet operation

Moly skirt coating for friction loss and skirt wear protection

Top ring down dimension: .250"

Ratios figured for .040 head gasket

Premium 1.2mm x 1.2mm x 3.0mm ring package included

Premium 8620 .185W wrist pins included

Valve pocket depth: 0.176" intake and .105" exhaust

2618 material for High HP-NOS-Boost applications