JE Pistons ::::: JE Pistons 181939 23deg Flat Top

JE Pistons 181939 JE Pistons; 23deg Flat Top; Oil Rail Support is Included; Made to Order; Set of 8 Pistons; Recommended RingSet: J10008-4145-5

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:

• Dome Volume: -5
• Stroke: 3.75
• CID: 405
• Comp Height: 1.125
• Comp Ratio @ 76cc: 10.1:1
• Rod: 6
• Block Height: 9
• Oversize: 0.02
• Comp Ratio @ 64cc: 11.5:1
• Gram Weight: 422
• Bore: 4.145
• Comp Ratio @ 58cc: 12.4:1

Fitments:

• Chevrolet 400 Small Block (1970-1980)