Speed Pro 454 ci BB Chev - Dome Top Hypereutectic Pistons (SPH426CP 030)

SPH426CP 030 - CHEV 454 DOME TOP PISTONS

461 c.i., 4.280" bore, 4.000 stroke, 6.135" rod length, +10.5cc dome volume

Part Number: SPH426CP 030

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 toretain standard ring gaps in the top groove

Piston Specifications :
CID: 461
Bore: 4.280

Stroke: 4.000
Rod Length: 6.135
Compression Height: 1.640

Compression Ratio with 100cc chamber volume: 9.84
Compression Ratio with 117cc chamber volume: 8.69
Compression Ratio with 124cc chamber volume: 8.27
Dome Volume: +10.5cc
Pin Type: Press or Float
Recommended Ring Set: Moly - SPE233K 030, STD Fit - SPR9905 030, File Fit - SPR9590 035
Coated skirt