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MAHLE Small Block Chevy 383 Flattop Powerpak Pistons, 6 Inch Rods
MAHLE Small Block Chevy 383 Flattop Powerpak Pistons, 6 Inch Rods

MAHLE Small Block Chevy 383 Flattop Powerpak Pistons, 6 Inch Rods

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MAHLE Small Block Chevy 383 Flattop Powerpak Pistons, 6 Inch Rods
MAHLE Small Block Chevy 383 Flattop Powerpak Pistons, 6 Inch Rods
MAHLE Small Block Chevy 383 Flattop Powerpak Pistons, 6 Inch Rods
MAHLE Small Block Chevy 383 Flattop Powerpak Pistons, 6 Inch Rods
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MAHLE Small Block Chevy 383 Flattop Powerpak Pistons, 6 Inch Rods
MAHLE Small Block Chevy 383 Flattop Powerpak Pistons, 6 Inch Rods
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Part # 50312505
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Details

Piston Style:
Flat Top w/ 2 valve reliefs
Piston Material:
Forged Aluminum
Piston Diameter:
Select Oversize to see
Stroke:
3.750"
Connecting Rod Length:
6.000"
Piston Weight:
406 grams
Piston Ring Style:
E
Wrist Pin Diameter:
0.9270"
Top Ring Material:
Ductile Iron
Second Ring Material:
Cast Iron
Top Ring Thickness:
1.5 mm
Second Ring Thickness:
1.5 mm
Oil Ring Thickness:
3.0 mm
Oil Ring Tension:
Standard Tension
Sold in Quantity:
Set

Info

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.

Important Messages

  • This product is discontinued.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
Some parts are not legal for use in California or other states with similar laws/regulations

Reviews

Q & A

Articles
  • There are a few things to consider before you select a replacement flexplate for your small-block Chevy engine. Speedway has some useful tips to follow that will help speed up the process.
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  • In this Tech Tip, John discusses LT1 rotating assembly options for a customer looking to build a solid autoX, drag, and occasional strip powerplant for his Firebird.
  • Looking to swap the venerable LS engine into your hot rod, muscle car, or classic truck? Take a look at our detailed identification guide for Gen III/IV LS engines before you hit the salvage yard or swap meet!

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