JE Pistons ::::: JE Pistons 181933 Tour Series Gas Ported

JE Pistons 181933 JE Pistons; Tour Series Gas Ported; Fits 3.480 and 3.500 Stroke; Set of 8 Pistons; Recommended RingSet: J70008-4155-5

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:

• CID: 407 / 380
• Comp Height: 1.125
• Gram Weight: 424
• Oversize: 0.03
• Block Height: 9
• Comp Ratio @ 58cc: 12.5:1 / 11.7:1
• Dome Volume: -5
• Comp Ratio @ 64cc: 10.9:1 / 11.6:1
• Comp Ratio @ 76cc: 10.2:1 / 9.6:1
• Stroke: 3.5 / 3.75
• Rod: 6.125 / 6
• Bore: 4.155

Fitments:

• Chevrolet 400 Small Block (1970-1980)