JE Pistons ::::: JE Pistons 218583 FSR Forging for All Pro 13deg/GB2000 Heads

JE Pistons 218583 JE Pistons; FSR Forging; For All Pro 13deg/GB2000 Heads; Oil Rail Support is Included; Made to Order; Set of 8 Pistons; Recommended RingSet: J76008-4130-5

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:

• Bore: 4.13
• Comp Ratio @ 58cc: 16.4:1
• Comp Ratio @ 76cc: 14:1
• Gram Weight: 450
• Oversize: 0.005
• Rod: 6
• Stroke: 3.875
• CID: 414
• Comp Height: 1.062
• Block Height: 9
• Comp Ratio @ 64cc: 15.1:1
• Dome Volume: -1

Fitments:

• Chevrolet 400 Small Block (1970-1980)