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United Engine Machine IC828.055

ICON Premium Forged Big Block Chrysler 440 "RB" 511ci Pistons Flat Top 4.375" Bore

United Engine Machine IC828.055
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Estimated ship date 01/24/18 if Ordered Today
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United Engine Machine IC828.055 ICON Premium Forged Big Block Chrysler 440 "RB" 511ci Pistons Flat Top 4.375" Bore $537.99
IBig Block Chrysler "RB" 511ci Forged Pistons
  • Flat Top
  • 4.375" Bore (+.055'')
  • 7.100" Connecting Rod
  • 4.250" Crank Stroke
  • Comp. Ratio: 12.6:1 / 75cc; 12.2:1 / 78cc; 11.1:1 / 88cc
  • 8/pkg.

  • United Engine Machine IC828.055 Details

    Chrysler "RB" 505ci

  • Flat Top Pistons
  • Use w/ 7.100" Connecting Rods & 4.250" Crank Stroke

    Technical Notes:

    • For use with 440 "RB" blocks
    • Stock standard 440 cylinder bore is 4.320" with 3.750" crankshaft stroke
    • 4.375" Bore + 4.250 Stroke = 511ci


    Technical Specs:

    • Alloy: Premium High Ductility 2618
    • Bore: 4.375"
    • Crankshaft Stroke: 4.250"
    • Connecting Rod Length: 7.100"
    • Deck Height: 10.725" (RB)
    • Compression Height: 1.485''
    • Pin Size: 0.9900'' x 2.750"
    • Pin Location: Centered
    • Flat Top: 2 Valve Reliefs
    • Effective Head Volume: 4.5cc
    • Intake Valve Relief: 0.215'' Depth / 2.300'' Diameter
    • Exhaust Valve Relief: 0.199'' Depth / 1.880'' Diameter
    • Top Landing Height: 0.260''
    • Ring Grooves: 1/16'' Top; 1/16'' Middle; 3/16'' Bottom
    • Gram Weight: 577/141
    • Compression Ratio: 12.6:1 w/75cc Heads; 12.2:1 w/78cc Heads; 11.1:1 w/88cc


    Manufacturer's Part Number:

    United Engine and Machine Company is proud to introduce their new Icon line of forged pistons. Icon brings the same quality and performance you've come to expect from other United Engine brands while adding a new lightweight forged design. No matter your high performance application, there is an Icon piston for you.


    • High ductility 2618 alloy
    • Perfect for Nitrous, Turbocharged and Supercharged Apps
    • Dual forced pin oiling on most applications
    • Lateral gas porting on higher compression ratios
    • Fully machined with deep valve pockets
    • Second land accumulator grooves
    • Top land mini groove technology
    • Diamond finished skirts
    • Triple wound spiral locks
    • Spacer rings included in short compression heights that intersect the wrist pin bore

    Click here for reference guide to piston top designs

    Items You Need
    Only $1,343.02
    Order Today
    Ships 01/30/18

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