GM CHEVY CHEVROLET BBC BIG BLOCK RECTANGLE 68 3919840 Port 3918840 Heads 67-69 Performance Square High 3964291 425HP

( Brand: Gm Chevy Chevrolet Bbc Big Block Rectangle 68 ), ( Manufacturer Part Number: 3919840 ), ( Part Type: Head ), ( Surface Finish: 3856208 3873858 3904391 3904392 3919842 65 66 ), ( Years: 67 68 69 70 71 72 3964291 375hp 375 Hp 425 425hp )

Review GM CHEVY CHEVROLET BBC BIG BLOCK RECTANGLE 68 Rectangular Port Original 67-69 Heads fits LS-6 LS6 427 396 1970–1972

The Block GM 427 Big 396 is a high-performance engine block designed for Chevrolet vehicles from the 1967 to 1969 model years. This block is specifically engineered for use with the 396 port and 427 cubic inch engine, and is identified by the part numbers 3918840 and 3919840.

The Block GM 427 Big 396 is made with superior materials and construction techniques to provide maximum strength and durability. It features square LS6 main caps, which are designed to increase cylinder head sealing and engine performance. The block is also equipped with 4-bolt main caps and 4-bolt main bearing journals for additional reliability and stability.

The Block GM 427 Big 396 is a big-block engine, which means it has a larger displacement than a small-block engine. This larger displacement allows the engine to produce more power and torque, making it ideal for high-performance applications. The block is also designed to accommodate high-compression pistons and high-flow cylinder heads, which can further increase engine performance.

The Block GM 427 Big 396 is a drop-in replacement for the original 396 block, making it easy to upgrade your engine without having to modify your vehicle's engine bay. It is also compatible with a wide range of aftermarket parts and accessories, allowing you to customize your engine to meet your specific performance needs.

Overall, the Block GM 427 Big 396 is a high-quality, high-performance engine block that is perfect for Chevrolet enthusiasts looking to upgrade their engine for more power and reliability. Its square LS6 main caps, big-block displacement, and compatibility with aftermarket parts make it a versatile and capable choice for any high-performance application.

1. Powerful: The LS6 engine is known for its power and performance, delivering up to 425 horsepower and 470 lb-ft of torque.

2. Reliable: The LS6 engine is a well-designed and reliable engine, with a reputation for longevity and durability.

3. Versatile: The LS6 engine can be used in a variety of applications, from street racing to drag racing to muscle car restorations.

4. High-quality parts: The engine is equipped with high-quality parts, such as forged pistons, aluminum heads, and a high-flow intake manifold, which can improve performance and reduce engine wear.

1. Expensive: The LS6 engine is a high-performance engine, and as such, it can be quite expensive to purchase and install.

2. Requires specialized knowledge: Installing and tuning an LS6 engine requires specialized knowledge and expertise, which may not be readily available to some individuals.

3. May not be street legal: Depending on local regulations and restrictions, the high-performance capabilities of an LS6 engine may not be street legal, limiting its use to racing or off-road applications.

The Chevy 396 LS6 performance engine is a powerful and reliable engine that can provide excellent performance in a variety of applications. However, its high cost and specialized installation requirements make it a less practical option for many individuals. If you have the knowledge, resources, and desire for high-performance driving, then the LS6 may be a great choice for you. However, if you are looking for a more budget-friendly option with less technical requirements, there may be other engines that better suit your needs.

If you are looking for a powerful and reliable engine for your Chevy, the LS6 may be a great option. However, make sure to do your research and consider your budget, technical capabilities, and local regulations before making a decision. It may be worth considering other engines, such as the LS3 or LS7, that offer similar performance at a lower cost. Ultimately, the best engine for you will depend on your specific needs and preferences.

Details:

Here is a set of b heads sitting in storage for many years. Need to be gone over have other sets for sale. Cleaning out inventory.

part #: 3919840 prices

• $1499.99-$9995.00

specifications cylinderheapar:

• for models: Ls-6, Ls6, 427, 396
• for years: 1970-1972
• brand: Gm Chevy Chevrolet Bbc Big Block Rectangle 68
• mpn: 3919840
• part type: Head
• surface finish: 3856208 3873858 3904391 3904392 3919842 65 66
• years: 67 68 69 70 71 72 3964291 375hp 375 Hp 425 425hp

Offer:

• quantity: 1
• Started: May 25, 2015, 8:44 pm
• best offer: true
• # bids: 0
• # Sold: 0

Shipping:

• handling: 2 days
• type: Calculated

General:

• Motors > Parts & Accessories > Vintage Car & Truck Parts > Engines & Components > Cylinder Heads & Parts
• condition: Used
• in stock: Yes

Returns:

• policy: no returns

Payments:

• PayPal
• MOCC

Ratings:

1. Great communication. A pleasure to do business with. 11-30-14
2. Perfect, Thanks! 04-21-15

Seller:

• city: Boyertown, Pennsylvania
• zipcode: 19512

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