MAHLE Pistons Forged Aluminum Power Pack Ring & Piston Set LS7

Product Details

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LS7 Chevy

The Mahle PowerPak is a complete, race proven piston assembly kit composed of hand deburred, forged, performance coated pistons, high-quality steel pins, round wire locks and low drag performance rings. Performance coatings include a phosphate dry lubricant that is used to protect against ring micro-welding and pin galling during initial startup and break-in. For additional performance, Mahle applies its proprietary Grafal anti-friction coating to each piston skirt.

Flat Top Pistons .043", 1.5 Napier, 3.0 mm Rings

Technical Specs:

Cubic Inches: 427 Bore: 4.125" Stroke: 4.000" Rod Length: 6.125" Compression Height: 1.105R Pin Diameter: 0.927" Crown Volume: -3cc Weight: 385g Compression Ratio @ 66cc: 12:1 Compression Ratio @ 64cc: 12.2:1 Compression Ratio @ 72cc: 11.2:1

Features

• Forged Aluminum Pistons
• CNC machined crown
• Hand deburred finishing
• Forced pin oiling with machined drain backs
• Lightweight slipper skirt forgings
• CNC finished pin bores
• Forced Pin Oiling
• Race Proven, reliable round wire locks, standard with every kit
• Pre-fitted German steel pins noted for their high strength, lightweight, and durability
• Phosphate coating - provides the grey appearance to the Mahle piston. This dry lubricant coating (not to be confused with a thermal film coating) provides a lubricant film in the pin bores and ring grooves until the oil system of the engine reached operating pressure; particularly useful during the initial start-up or break-in of engines to protect against galling and micro welding. Piston crown remains machineable.
• Mahle's Grafal Skirt Coating - Reduces drag, scuffing, friction and cylinder bore wear; reduces piston noise.
• Precision ring grooves for included piston rings