350 ci SB Chev - Flat Top Hypereutectic Pistons357 c.i., 4.040" bore, 3.480 stroke, 6.000" rod length, -5.0cc dome volumeBrand: SPEEDPROPart Number: SPH140CL 040Description: 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: 357
- Bore: 4.040
- Stroke: 3.480
- Rod Length: 6.000
- Compression Height: 1.260
- Compression Ratio with 64cc chamber volume: 9.77
- Compression Ratio with 72cc chamber volume: 9.00
- Compression Ratio with 76cc chamber volume: 8.67
- Dome Volume: -5.0cc
- Pin Type: Floater with tapered pin
- Recommended Ring Set: Moly - N/A, STD Fit - N/A, File Fit - SPR9342 045
- CNC machined, lightweight, coated skirt
