JE Pistons ::::: JE Pistons 258197 Dome Open Chamber For Nitrous Set of 8 Pistons

JE Pistons 258197 JE Pistons; Dome; Open Chamber; For Nitrous Aps; Oil Rail Support is Included; Set of 8 Pistons; Recommended RingSet: J100F8-4580-5

JE Pistons - Domestic: For over 60 years, JE Pistons has been the industry leader in forged racing pistons for Chevy, Ford, Mopar and Buick engines.

Features:

• Application Specific Forgings for an Optimized, Uniform Crown Thickness
• Contact Reduction Groove to Minimize Frictional Drag
• Accumulator Groove for Increased Top Ring Stability and Sealing
• CNC-Machined Side Relief with Lower Support Band for Additional Skirt Strength
• Honed Pin Bores, Double Pressure Fed Pin Oilers and Wire Locks Included

Specifications:

• Comp Height: 1.27
• Comp Ratio @ 118cc: 14.7:1
• Rod: 6.385
• Comp Ratio @ 110cc: 16.1:1
• Stroke: 4.25
• Comp Ratio @ 124cc: 13.8:1
• Block Height: 9.78
• Dome Volume: 45
• CID: 560
• Gram Weight: 677
• Bore: 4.58
• Oversize: 0.114

Fitments:

• Chevrolet 502 Big Block Base (1985-2010)