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Wiseco 6491B110 Professional Series 2618 Forged Piston - Gas Ported, Nitrous Compatible, 9.750 Deck

(Chevrolet Corvette 1970-74, Impala 1970-76, Malibu 1973-75, C1500 1990-93, Chevelle 1971-73, Blazer 1973, C10 Pickup 1973-74, Caprice 1970-76 + 48 more models)

Manufacturer

Picture for manufacturer Wiseco Pistons

Part Number

6491B110
12 reviews
Sale Price

$172.99

Estimated ship date Saturday, November 28

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Fitment guaranteed

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Product Details

The Wiseco 6491B110 is a Professional Series forged replacement piston built from 2618 aluminum alloy for maximum strength and durability in high-performance and racing applications. Featuring a 12–14 degree solid dome crown design, gas porting, and nitrous compatibility, this piston is engineered for serious power builders demanding race-proven reliability. It fits a 9.750" deck height configuration and is sold as an individual/replacement unit.

Key Features:

  • 2618 Alloy Forged Construction — Superior strength and heat resistance compared to cast pistons, ideal for high-horsepower and power-adder applications
  • Quick 8 Series Design — Purpose-built geometry for demanding performance builds
  • 12–14 Degree Solid Dome — Crown profile optimized for quench and combustion efficiency, promoting detonation and pre-ignition resistance
  • Gas Ported — Improves ring seal at high RPM by equalizing pressure behind the top ring, reducing blow-by and improving power
  • Nitrous Compatible — Engineered to withstand the extreme thermal and mechanical demands of nitrous oxide applications
  • Strutted Skirt — Reinforced skirt design maximizes bore stability and ring seal while managing thermal expansion
  • Valve Pocket Design — Oversized valve reliefs accommodate large valves and high-lift camshafts for maximum flow
  • Precision-Machined Ring Grooves — Calculated groove root diameters and axial widths deliver excellent ring seal and minimal blow-by and oil consumption
  • ISO-Certified Forging Facility — Feature-aligned grain flow technology produces a stronger, more consistent forging
  • ArmorGlide Skirt Coating — Wiseco's dry film lubricant reduces operating friction, allows tighter bore fitment, minimizes piston rock noise, and extends skirt and cylinder wall life

Part Details:

  • Sold as an individual/replacement piston
  • Fits 9.750" deck height
  • Includes wrist pin: S462
  • Recommended ring set: W77008-4610-5 (rings sold separately)

Wiseco's Professional Series pistons are the benchmark for elite-level performance builds, capable of supporting engines well in excess of 1,500 horsepower. Engineered and manufactured in the USA, the 6491B110 delivers the precision and reliability required for race engines and serious street builds alike.

Products specifications

Fits

Chevrolet Corvette 1970-74, Impala 1970-76, Malibu 1973-75, C1500 1990-93, Chevelle 1971-73, Blazer 1973, C10 Pickup 1973-74, Caprice 1970-76, C10 1975-80, El Camino 1970-75, K2500 1991-2000, Express 3500 1996-2000, C3500 1988-2000 + 43 more models

Comp Height

1.155

Comp Ratio @ 61CC

16.2 flat top:1

Comp Ratio @ 63CC

15.8 flat top:1

Comp Ratio @ 67CC

15.1 flat top:1

Comp Ratio @ 80CC

13.3 flat top:1

Dome Volume

4cc solid D / -6cc cut to FT

Rod

6.385

Stroke

4.5

Piston Quantity

1

Wrist Pin Style

Floating

Make

Chevrolet

Piston Material

2618

Prop 65

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Bore Diameter

4.610

Compression Height

1.155

Industry

Automotive

Product Market

Domestic

Engine Type

ICE

Engine

Big Block

Wrist Pin Material

52100

Product Series

Professional

Product Type

Engine Piston

Wrist Pin Outer Diameter

0.990

Forging Type

Strutted

Out of Stock Message

Estimated Shipped Date 3-4 Weeks

EBAY Category ID

33623

Engine - Web

Big Block

Make - Web

Chevrolet

Ring Set Included

No

Skirt Coating

Yes

Wrist Pin Included

Yes

Title

Wiseco - Chevrolet, Big Block, 4.610 in. Bore, Piston

Piston Volume

4.00

Title - Web

Professional Chevy Big Block Piston - 4.610 in. Bore - 1.155 .in CH, 4.00 CC

good price and easy ordering

Satisfactory

Great Deal Thanks !

Very quick ordering, however I was unable to use the PayPal function.

Very fast transaction and shipping info.. Best price found on the internet..

Best price on the web. Very helpful customer service.

thank you

Went to ebay, amazon, and summit racing looking for this part and finally found it here after looking on this site for about 10 seconds.

great!

Best price and instant service.<br>What more can you ask for.

Great prices

Great

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