Hypereutectic Pistons Chevy 454ci 7.4L Big Block Standard
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SEALED POWERPART NUMBER: 844-H693CP

Hypereutectic Pistons Chevy 454ci 7.4L Big Block Standard

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Big Block Chevy
    Hypereutectic Pistons
  • Chevy 454ci 7.4L Big Block
  • 4.250" Bore (Standard)
  • +22.0cc Dome Top w/2 Valve Reliefs
  • Set of 8

    Technical Specs:
  • Material: Hypereutectic
  • Bore: 4.250' (107.95mm)
  • Piston Top: +22.0cc Dome Top w/2 Valve Reliefs, 0.230" Dome
  • Compression Height: 1.640"
  • Rod Length: 6.135"
  • Stroke: 4.000"
  • Compression Ring Groove: 5/64"
  • Second Ring Groove: 5/64"
  • Oil Ring Groove Width: 3/16"
  • Full Length: N/A
  • Pin Size: 0.990" O.D. (25.146mm)
  • Pin Type: Press-Fit or Floating
  • Skirt Type: DUROSHIELD Coated
  • Piston Skirt Clearance: 0.0015
  • Notes: Use Piston Ring p/n 844-E233X Standard Set; p/n 844-E233K Premium Moly Set; p/n 844-R9905 Plasma-Moly Performance Set (Rings Not Included).

    Add Strength and Power to Your Pistons

    Sealed Power Hypereutectic Pistons are built to exacting tolerances and feature an aluminum casting with an anti-friction skirt coating that is highly resistant to scuffing and wear. The Duroshield skirt helps improve fuel economy, doesn't require any additional clearance, extends piston life, and increases horsepower with less friction. These durable pistons operate with tight bore clearances and work perfectly with normal-range ring end gaps, making them great for street, bracket racing, and oval track applications.

Part TypePiston
Product LineSealed Power Hypereutectic Pistons
BrandSEALED POWER
Package Height5.1
Package Width10.2
Package Length20.6
Weight16.9 PG
Part CategoryPerformance Parts
Piston Ring Thickness (In.)5/64 x 5/64 x 3/16
Wrist Pin StylePress-fit or floating
QuantitySet of 8
Piston StyleDome, with two valve reliefs
Piston Head Volume (Cc)-22
Dome Height0.23 in (5.842 mm)
Compression Distance1.64 in (41.656 mm)
Piston MaterialHypereutectic aluminum
Pin Diameter0.989 in (25.1 mm)
Part FitmentSemi Universal
Bore (Mm)107.95
Bore4.25 in (107.95 mm)
Vendor Part NumberH693CP
Package Qty1
Package TypeEA
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