Speed Pro 350 Chev Flat Top Pistons - .030"

350 ci SB Chev - Flat Top Hypereutectic Pistons 355 c.i., 4.030" bore, 3.480 stroke, 5.700" rod length 

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: 355

• Bore: 4.030

• Stroke: 3.480

• Rod Length: 5.700

• Compression Height: 1.548

• Compression Ratio with 58cc chamber volume: 10.79

• Compression Ratio with 64cc chamber volume: 10.06

• Compression Ratio with 76cc chamber volume: 8.88

• Dome Volume: -6.9cc

• Pin Type: Press or Floated

• Ring Size: 5/64" - 5/64" - 3/16"

• Recommended Ring Set: Cast - SPE251X 030, Moly - SPE251K 030 (Contact if needed as we usually keep in stock)