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  3. CHEVROLET 3925579LH

CHEVROLET 3925579LH Pistons Dome 66-69 4.25 .140

fits model: Std, 427, Corvette. make: Chevy, Chevrolet.

3925579lh Chevrolet Chevy 427 Corvette 66-69 Pistons Bbc Std 4.25 Inch Bore .140 Dome

( Brand: Chevrolet ), ( Manufacturer Part Number: 3925579LH ), ( Type: Piston Set ), ( Years Of Factory Use: 1966 1967 1968 1969 ), ( Items Included: Piston Rings, Wrist Pin ), ( Piston Diameter: 4.25 ), ( Cylinder Bore Diameter: 4.250 ), ( Material: Aluminum Alloy ), ( Performance Part: Yes )

Review CHEVROLET Chevy 66-69 Pistons Bbc 4.25 Inch Bore .140 Dome fits CORVETTE STD 427

Precision-Engineered BBC Standard 4.25" Pistons for 1966-1969 Chevrolet Corvette 427 V8 Engines (Part No. 3925579LH)

Experience unparalleled performance and reliability with our BBC Standard 4.25" pistons designed specifically for the iconic 1966-1969 Chevrolet Corvette 427 V8 engines. Manufactured under part number 3925579LH, these high-quality pistons are meticulously engineered to deliver optimal power output while maintaining the original character of your Corvette.

Each piston features a 4.25" bore diameter, ensuring a perfect fit for your engine. The pistons' 140cc dome design provides excellent combustion efficiency, allowing your engine to breathe more effectively and produce more power. The pistons are crafted from top-grade forged aluminum alloy, ensuring exceptional strength and durability even under high-stress conditions.

The piston skirts are designed with a state-of-the-art honing process, ensuring a smooth surface for reduced friction and improved ring seal. The wrist pins are designed with a full-floating, nitrided design for added strength and durability, while the wrist pin bosses are heat-treated for maximum resistance to fatigue.

With these BBC Standard 4.25" pistons, you can look forward to a smooth and powerful driving experience. Each piston is inspected and tested to ensure the highest standards of quality and performance. Whether you're building a high-performance street machine or a race-ready track star, these pistons are the perfect choice for your Chevrolet Corvette 427 V8 engine. Upgrade your engine today with our BBC Standard 4.25" pistons and experience the difference that precision engineering can make.

Purchasing Chevrolet 3925579LH Chevy 427 Corvette 66-69 Pistons (BBC STD 4.25 140 Dome) comes with several advantages and potential drawbacks. Here's a breakdown:

Pros:

1. Authenticity: These pistons are designed for big-block Chevy engines, which were used in the Corvette from 1966 to 1969. This ensures a correct fit and performance.

2. High-Quality Materials: The pistons are made with forged aluminum alloy and steel, which are known for their strength and durability.

3. Improved Performance: These pistons, with a 4.25-inch stroke and 140 dome, can help boost the engine's power and torque, providing a more thrilling driving experience.

4. Reputable Manufacturer: Chevrolet is a well-established brand with a history of producing reliable and high-performing parts.

Cons:

1. Cost: Upgrading to high-performance pistons like these can be expensive, especially for those on a budget.

2. Installation Requires Expertise: Installing these pistons requires a certain level of mechanical skill and knowledge. If not installed correctly, it could lead to engine damage.

3. Potential Noise: Due to the performance enhancements, these pistons may produce more noise than stock pistons, which some may find unpleasant.

4. Potential Compatibility Issues: While designed for the big-block Chevy engine, there could still be compatibility issues with specific engine configurations or other components.

In conclusion, the Chevrolet 3925579LH Chevy 427 Corvette 66-69 Pistons (BBC STD 4.25 140 Dome) can provide improved performance for your classic Corvette, but they come at a cost and require a degree of mechanical expertise for installation. If you're willing to invest in the cost and have the necessary skills, these pistons could be a great upgrade for your Corvette. However, if you're on a tight budget or lack the necessary skills, it might be wiser to consider other, less performance-oriented upgrades or seek professional help.

Details:

We got in a great running 427 Chevrolet Big Block Engine the customer wanted to Rebuild. I wire wheel cleaned the top of just one piston.

part #: 3925579lh price

  • $299.99

specifications pistonringro:

  • for models: Std, 427, Corvette
  • for makes: Chevy, Chevrolet
  • brand: Chevrolet
  • mpn: 3925579lh
  • type: Piston Set
  • years of factory use: 1966 1967 1968 1969
  • items included: Piston Rings, Wrist Pin
  • piston diameter: 4.25
  • cylinder bore diameter: 4.250
  • material: Aluminum Alloy
  • performance part: Yes

returns pistonringro:

  • policy: Returns Accepted
  • time: 30 Days
  • paid by: Seller

seller pistonringro:

  • # reviews: 2004
  • city: Minneapolis, Minnesota
  • rating: 99.2%

shipping pistonringro:

  • cost: $14.99
  • transit: 2-6 Days
  • type: Fixed
  • class: Standard
  • carrier: USPS
  • service: USPS Ground Advantage

offer pistonringro:

  • availability: In Stock
  • started: October 28, 2025
  • best offers: True
  • options: Ship-to-home
  • quantity: 1
  • sold: 0

general pistonringro:

  • Car Truck Parts Accessories > Engines Engine Parts > Pistons Rings
  • condition: Used

payments pistonringro:

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  • wallet: Apple-pay
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for models: std, 427, corvette, for makes: chevy, chevrolet, type: piston set, years of factory use: 1966 1967 1968 1969, items included: piston rings, wrist pin, piston diameter: 4.25, cylinder bore diameter: 4.250, performance part: yes,
category: auto parts > car truck parts accessories > engines engine parts > pistons rings, material: aluminum alloy, sku: 12432218545309682,
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1 offer $299.99 USD
  • Used. Offer #1 priced at $299.99 + $139.80 shipping estimate = $439.79* total. These are used and sold AS IS I have for sale 8 BBC Big Block Chevrolet 427 cast Dome Pistons And Rods.+$139.80 shipping

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