Product Summary

350, Flat Top w/ 2 valve reliefs Piston Style

  • Pistons are made from 4032 aluminum alloy
  • Fits small block Chevy's
  • Lightweight forged design pistons that are complete with rings, wrist pins and locks
  • 5.7" Bore size
  • High strength, light weight German steel pins

Key Specs

MFG. Part #

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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.

  • Fits Small Block Chevy
  • Crankshaft Stroke: 3.480/3.500
  • Rod Length: 5.700
  • Compression Height 1.550
  • Piston Ring Size: 1.5mm, 1.5mm, 3.0mm
  • Choose Bore Size: 4.030-4.060



  • Forged piston for performance applications
  • 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
  • Hand deburred
  • High strength, light weight German steel pins
  • Race-proven round wire locks
  • Low drag ring pack
  • Light weight slipper skirt forgings

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.


MFG. Part #
Piston StyleFlat Top w/ 2 valve reliefs
Piston MaterialForged Aluminum
Piston Diameter
Connecting Rod Length5.700"
Piston Weight
Wrist Pin Diameter0.9270"
Wrist Pin Weight118 grams
Top Ring Thickness1.5 mm
Second Ring Thickness1.5 mm
Oil Ring Thickness3.0 mm
Compression 64cc =10.1 : 1
Sold in QuantitySet