These ruggedly durable pistons are made with exclusive high strength FM425 alloy, and enhanced with 16.5% silicon for excellent tensile strength and scuff resistance. This advanced metallurgy permits tighter bore clearances, which help minimize noise on cold engine start-up. These pistons are the ideal choice for street performance applications and late-model replacement.

More Sealed Power hypereutectics benefits:

• Higher strength than cast or forged at operating temperature
• Finely dispersed silicon particles provide a highly resistant wear surface and reduces scuffing
• Lower material growth allows pistons to be fit tighter, improving cylinder sealing for less blow-by and more power
• High silicon content allows elimination of groove inserts in certain applications
• Designed to retain standard ring gaps in the top groove

Piston Specifications :

• CID: 407
• Bore: 4.155
• Stroke: 3.750
• Rod Length: 5.565
• Compression Height: 1.560
• Compression Ratio with 64cc chamber volume: 10.14
• Compression Ratio with 72cc chamber volume: 9.40
• Compression Ratio with 76cc chamber volume: 9.08
• Dome Volume: -12.5cc
• Pin Type: Press pin
• Recommended Ring Set: Moly - SPE243K 030, File Fit SPR5879 035

Product Reviews for SPH601P 030 - SPEEDPRO