Speed Pro 454 ci BB Chev - Flat Top Hypereutectic Pistons (SPH625CP 040)

Available on both hypereutectic and POWERFORGED pistons, DUROSHIELD is an exclusive moly-graphite skirt
coating that extends engine life and essentially eliminates scuffing. This technologically advanced coating is precisely applied to the piston through a computer-controlled process.

DUROSHIELD skirt coated pistons:

• Reduce friction for increased fuel economy and horsepower
• Essentially eliminate scuffing and wear
• Prevent damage from inadequate lubrication, especially at start-up
• Improve cylinder sealing for less blow-by and more power
• Require no increase in skirt clearance

Piston Specifications :

• CID: 463
• Bore: 4.290
• Stroke: 4.000
• Rod Length: 6.135
• Compression Height: 1.640
• Compression Ratio with 100cc chamber volume: 8.91
• Compression Ratio with 117cc chamber volume: 7.98
• Compression Ratio with 124cc chamber volume: 7.63
• Dome Volume: -2.0cc
• Pin Type: Press or float
• Recommended Ring Set: Moly - SPE233K 040, STD Fit - SPR9905 040, File Fit - SPR9590 045
• Coated skirt