GM 3933146 Nos Cylinder Heads 148

( Brand: Gm ), ( Manufacturer Part Number: 3933146 ), ( Part Type: Cylinder Head ), ( Oe/oem Part Number: Chevrolet Gmc Custom Cheyenne Scottsdale Head Engine Ci ), ( Material: Cast Iron ), ( Vintage Part: Yes ), ( Country Of Origin: United States )

Review GM Nos Chevy Pickup Truck Matching# 148 Cylinder Heads fits IMPALA 396 1968–1969

High-Performance 1968-1969 Chevy 396 148 Cylinder Heads for a Power-Packed 1969 Impala

Experience the unparalleled power and precision of the GM 3933146 NOS 148 Cylinder Heads, designed specifically for the iconic 1968-1969 Chevy 396 Big-Block engines. These high-performance cylinder heads are a must-have for any enthusiast looking to upgrade their 1969 Impala for an unforgettable driving experience.

The GM 3933146 NOS 1968-1969 Chevy 396 148 Cylinder Heads are meticulously crafted to provide superior engine performance, increased horsepower, and improved fuel efficiency. These heads feature a 6-bolt main, 4-bolt head, and a 2.02/1.60 valve size, ensuring optimal air and fuel flow for a more responsive and powerful engine.

One of the standout features of these cylinder heads is their CNC-machined intake and exhaust ports. This precise machining ensures optimal flow dynamics, reducing turbulence and increasing power output. The heads also come with hardened valve seats, ensuring durability and longevity, even under heavy use.

The GM 3933146 NOS 148 Cylinder Heads are designed for a perfect fit, ensuring seamless installation on your 1969 Impala. They are engineered to work perfectly with your stock intake or aftermarket intake systems, providing you with the freedom to customize your engine's performance to your liking.

Upgrade your 1969 Impala with the GM 3933146 NOS 1968-1969 Chevy 396 148 Cylinder Heads and take your driving experience to the next level. Whether you're cruising down the highway or tackling the race track, these high-performance cylinder heads will deliver unparalleled power, precision, and reliability. So, don't wait - upgrade today and unleash the full potential of your 1969 Impala!

1. Performance Enhancement: The 148 cylinder heads are known for their high flow design, which can improve the engine's performance, providing a better acceleration and a more powerful ride.

2. Availability of Parts: Being a common aftermarket part, finding replacement parts for these cylinder heads should be relatively easy, ensuring longevity and ease of maintenance.

3. Increased Value: Upgrading the engine with high-performance parts like these cylinder heads can increase the resale value of your Impala, making it more attractive to potential buyers.

1. Potential Compatibility Issues: While these cylinder heads are designed to fit on the 396 engine, there might be minor differences between the engine in your Impala and the one they were originally intended for, which could lead to fitment issues.

2. Cost: Upgrading the engine with high-performance parts like these cylinder heads can be expensive. You'll need to factor in the cost of the cylinder heads, installation, and any potential modifications necessary.

3. Increased Noise and Vibration: High-performance parts often result in a louder and more vibrant driving experience, which may not be desirable for everyone, especially if you're looking for a more comfortable and quiet ride.

The decision to buy 1968-1969 Chevy 396 148 Cylinder Heads for your 1968-1969 Impala depends on your priorities. If you're after a more powerful and responsive engine, these cylinder heads could be a good investment. However, if you're more concerned about cost, compatibility issues, or a quieter ride, you might want to consider other options.

If you decide to proceed with this upgrade, I recommend researching the specific engine in your Impala and the exact cylinder heads you're considering to ensure compatibility. Also, consider the cost of the upgrade and whether the potential performance benefits are worth it for your specific needs and preferences.

Details:

Most of those guys do not even own their parts, they are relying on the parts being shipped from some third party IF have them and you know condition until it arrives at your door. We find this part number for: 1968-69 Chevy 'All' trucks with 396 and 1969 passenger cars w/396 except special high performance. Other research online suggest these could be used on 366/427 big trucks too, but we did not see that in parts books. Very hard to find NOS part.

Both have original GM boxes and both are pretty clean, a little light surface rust we show in photos. Ship cost shown is for continental US 48 states - they will each ship separately as the weight would be too much with both in same shipping box but price pair.

part #: 3933146 prices

• $59.95-$159.95

specifications cylinderheapar:

• for models: 396, Impala
• for makes: Chevy
• for years: 1968-1969
• brand: Gm
• mpn: 3933146
• part type: Cylinder Head
• oe/oem part number: Chevrolet Gmc Custom Cheyenne Scottsdale Head Engine Ci
• material: Cast Iron
• vintage part: Yes
• country of origin: United States

returns cylinderheapar:

• policy: No Returns

offer cylinderheapar:

• started: November 5, 2025
• options: Ship-to-home
• availability: In Stock
• sold: 0
• quantity: 1

payments cylinderheapar:

• credit card: Visa
• other
• wallet: Google-pay

seller cylinderheapar:

• # reviews: 3968
• rating: 100.0%
• city: Adel, Georgia

general cylinderheapar:

• Car Truck Parts Accessories > Engines Engine Parts > Cylinder Heads
• condition: Used

shipping cylinderheapar:

• class: Economy
• service: Economy
• type: Fixed
• transit: 3-9 Days
• cost: $160.00

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