Mahle's PowerPak piston assemblies include forged pistons,
piston rings, pins, and wire locks--all in one race-proven package. The pistons
are hand deburred, then coated with dry phosphate to protect against ring
micro-welding and pin galling during initial startup. For additional
performance, Mahle added it's proprietary Grafal anti-friction coating to the
piston skirts. Low drag rings, steel pins, and round wire locks complete the
package.
Specs:
SBC550030F05 Small block Chevy PowerPak Piston Kit
- Forged 4032 High Silicone Low Expansion Aluminum Alloy
- Bore: 4.030''
- Pin Diameter: .927''
- -5cc Dome Volume
- Compression Ratio @ 64cc: 10.6:1
- Precision Ring Grooves for Included 1.5, 1.5, 3.0mm Rings
- Stroke: 3.480/3.500
- Rod Length: 5.7
- Compression Height: 1.550
- Weight: 464g
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