JE Pistons ::::: JE Pistons 181956 18deg Flat Top

JE Pistons 181956 JE Pistons; 18deg Flat Top; Oil Rail Support is Included; Set of 8 Pistons; Recommended RingSet: J10008-4165-5

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
• CID: 436
• Stroke: 4
• Gram Weight: 441
• Oversize: 0.04
• Comp Ratio @ 76cc: 13.1:1
• Dome Volume: -6
• Rod: 6
• Bore: 4.165
• Comp Ratio @ 64cc: 13.7:1
• Comp Ratio @ 58cc: 14.2:1
• Comp Height: 1

Fitments:

• Chevrolet 400 Small Block (1970-1980)