Made in USA
Hypereutectic Pistons Chevy 454ci 7.4L Big Block +040
InfoVehicle Info Needed
SEALED POWERPART NUMBER: 844-H693CP40

Hypereutectic Pistons Chevy 454ci 7.4L Big Block +040

$59027
ShippingShips on 11/20/2026
Lowest PriceLowest Price Guarantee

Items You Need

Break-In/Engine Oil Supplement [12 oz. Bottle]

JEGS

Break-In/Engine Oil Supplement [12 oz. Bottle]

Part Number : 555-28060
$1009$11.99
You Save$1.90
Moly Piston Ring Set Oversize: .040"

SEALED POWER

Moly Piston Ring Set Oversize: .040"

Part Number : 844-E233K40
$8831
32-Blade Feeler Gauge Kit 0.0015" to 0.035" (0.038mm to 0.889mm)

JEGS

32-Blade Feeler Gauge Kit 0.0015" to 0.035" (0.038mm to 0.889mm)

Part Number : 555-80500
$999$10.99
You Save$1.00
Cast Piston Ring Set Oversize: .040"

SEALED POWER

Cast Piston Ring Set Oversize: .040"

Part Number : 844-E233X40
$8016

Big Block Chevy
    Hypereutectic Pistons
  • Chevy 454ci 7.4L Big Block
  • 4.290" Bore (+.040)
  • +22.0cc Dome Top w/2 Valve Reliefs
  • Set of 8

    Technical Specs:
  • Material: Hypereutectic
  • Bore: 4.290' (108.966mm)
  • 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-E233X40 Standard Set; p/n 844-E233K40 Premium Moly Set; p/n 844-R9905.040 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 Width10.3
Package Length20.3
Weight17.15 PG
Part CategoryPerformance Parts
QuantitySet of 8
Vendor Part NumberH693CP40
Package Qty1
Package TypeEA
Some parts are not legal for use in California or other states with similar laws / regulations
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