Description

350 ci SB Chev – Dish Top Hypereutectic Pistons389 c.i., 4.060″ bore, 3.480 stroke, 5.700″ rod length, +12.3cc dome volume
Brand: SPEEDPRO
Part Number: SPH423DCP 060
Description:

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 minimise 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: 360
• Bore: 4.060
• Stroke: 3.480
• Rod Length: 5.700
• Compression Height: 1.548
• Compression Ratio with 58cc chamber volume: 11.26
• Compression Ratio with 64cc chamber volume: 9.61
• Compression Ratio with 76cc chamber volume: 8.56
• Dome Volume: -12.3cc
• Pin Type: Press or Floated
• Ring Size: 5/64″ – 5/64″ – 3/16″
• Recommended Ring Set: Cast – SPE251X 060, Moly – SPE251K 060