Speed Pro 454 ci BB Chev - Dome Top Hypereutectic Pistons (SPH552CP 030)

SPH552CP 030 - BBC 454 TO 489 STROKER PISTON

489 c.i., 4.280" bore, 4.250 stroke, 6.135" rod length, +11.2cc dome volume

Part Number: SPH552CP 030

Available on both hypereutectic and POWERFORGED pistons, DUROSHIELD is an exclusive moly-graphite skirt
coating that extends engine life and essentially eliminates scuffing. This technologically advanced coating is precisely applied to the piston through a computer-controlled process.
DUROSHIELD skirt coated pistons:

Reduce friction for increased fuel economy and horsepower
Essentially eliminate scuffing and wear
Prevent damage from inadequate lubrication, especially at start-up

Improve cylinder sealing for less blow-by and more power
Require no increase in skirt clearance
Piston Specifications :

CID: 489
Bore: 4.280
Stroke: 4.250
Rod Length: 6.135
Compression Height: 1.525
Compression Ratio with 100cc chamber volume: 10.62
Compression Ratio with 117cc chamber volume: 9.34
Compression Ratio with 124cc chamber volume: 8.88
Dome Volume: +11.2cc
Pin Type: Press or Float

Recommended Ring Set: Moly - SPE233K 030, STD Fit - SPR9905 030, File Fit - SPR9590 035
Coated skirt