400 Ci SB Chev - Dish Top Hypereutectic
Product Information
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 Information
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