JE Pistons 170669 18deg Dome for Big Chief/Duke/Victor Head

JE Pistons 170669 JE Pistons; 18deg Dome; For Big Chief/Duke/Victor Head; Oil Rail Support is Included; Set of 8 Pistons; Recommended RingSet: J200U8-4600-5

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:

• Block Height: 9.78
• Comp Ratio @ 97cc: 13.1:1
• Gram Weight: 582
• CID: 565
• Comp Height: 1.12
• Comp Ratio @ 87cc: 14.5:1
• Oversize: 0.134
• Rod: 6.535
• Stroke: 4.25
• Bore: 4.6
• Comp Ratio @ 82cc: 15.3:1
• Dome Volume: 13

Fitments:

• Chevrolet 454 Big Block (1970-2000)
• Chevrolet 427 Big Block (1966-1969)
• Chevrolet 502 Big Block BASE (1985-2010)