302W ci SB Ford - Flat Top Hypereutectic Pistons311 c.i., 4.060" bore, 3.000 stroke, 5.124" rod length, -5.0cc dome volume With 8.229 DeckBrand: SPEEDPROPart Number: SPH273CP 060Description: 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: 311
- Bore: 4.060
- Stroke: 3.000
- Rod Length: 5.124
- Compression Height: 1.605
- Compression Ratio with 58cc chamber volume: 8.71
- Compression Ratio with 60cc chamber volume: 8.51
- Compression Ratio with 63cc chamber volume: 8.29
- Dome Volume: -5.0cc
- Pin Type: Press
- Recommended Ring Set: Moly - SPE251k 060, STD Fit - SPR9903 060, File Fit - SPR9343 065
