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Key Specs

BrandMAHLE

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Details

The Mahle PowerPak pistons are a race proven lightweight forged design that are complete with rings, wrist pins and locks. They are also completely phosphate coated plus feature an anti-friction Grafal skirt coating. PowerPak pistons are made from 4032 aluminum alloy to allow for tighter cylinder to wall clearances, and improved temperature stability.

  • Forged piston for performance applications
  • Lightweight slipper kirt forgings
  • Fully-machined crown
  • Grafal anti-Friction coating on skirts
  • Phosphate-coated to reduce micro-welding and pin galling
  • Pin bores finished on CNC boring equipment
  • Deburred
  • High strength, light weight steel pins
  • Race proven round wire locks
  • Low drag ring pak
  • 1.5mm, 1.5mm, 3.0mm file fit performance ring set is included
For 383 c.i. S/B Chevy (4.000" bore x 3.75" stroke). Choose oversize diameter needed.

PowerPak Piston Chart (GIF)

Item Details

C/R 64cc=11.3
Piston Weight: 406 g
Rod Length: 6"

Specs

  • Comp Height 5.7" Rod:  1.425
  • Comp Height 6.0" Rod:  1.125
  • Pin Diameter:  0.927
  • Clearance Guide
    • *Meas. = 0.500
    • Min = 0.0025
    • Max = 0.0033

*The location to measure piston-to-wall clearance for each application. This point is calculated from the bottom of the piston skirt and indicates the widest part of the piston and thus where to measure.

Specifications

KEY SPECS
BrandMAHLE
GENERAL
Piston StyleFlat Top w/ 2 valve reliefs
Piston MaterialForged Aluminum
Piston Diameter
Stroke3.750"
Connecting Rod Length6.000"
Piston Weight406 grams
Piston Ring StyleE
Wrist Pin Diameter0.9270"
Top Ring MaterialDuctile Iron
Second Ring MaterialCast Iron
Top Ring Thickness1.5 mm
Second Ring Thickness1.5 mm
Oil Ring Thickness3.0 mm
Oil Ring TensionStandard Tension
Sold in QuantitySet