Speed Pro 302W ci SB Ford - Flat Top Hypereutectic Pistons (SPH273CP 040)

SPH273CP 040 - FORD 289-302W FLAT TOP PISTON

307 c.i., 4.040" bore, 3.000 stroke, 5.124" rod length, -5.0cc dome volume With 8.229 Deck

Part Number: SPH273CP 040

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: 307
Bore: 4.040

Stroke: 3.000
Rod Length: 5.124
Compression Height: 1.605

Compression Ratio with 58cc chamber volume: 8.64

Compression Ratio with 60cc chamber volume: 8.45

Compression Ratio with 63cc chamber volume: 8.22

Dome Volume: -5.0cc

Pin Type: Press
Recommended Ring Set: Moly - SPE251k 040, STD Fit - N/A, File Fit - SPR9343 045