GM CHEVY CHEVROLET BBC BIG BLOCK RECTANGLE 68 3873858 Port Heads Square Performance High 67 69 3964291 425HP

( Brand: Gm Chevy Chevrolet Bbc Big Block Rectangle 68 ), ( Manufacturer Part Number: 3873858 ), ( Part Type: Hp Head ), ( Surface Finish: 3856208 3919840 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 68 375 Hp Port Original Rectangular Heads fits LS-6 LS6 396 427 425 1970–1972

The GM 396 375 HP Port 3873858 is a high-performance engine block designed for Chevrolet 427 425 applications. This block is engineered with a square performance deck, which provides increased strength and rigidity, allowing for higher horsepower and torque capabilities. The block is crafted from high-quality cast iron, ensuring durability and longevity under extreme conditions.

The block features a 4.000-inch bore and a 3.750-inch stroke, providing excellent power output and efficiency. The LS6 big-block design includes large-diameter cylinders and a high-volume oiling system, ensuring proper lubrication and cooling, even under heavy loads. The block is also equipped with four-bolt main caps and a high-capacity water pump, further enhancing its overall performance and durability.

This engine block is a direct fit for Chevrolet 427 425 applications and is compatible with a wide range of aftermarket performance parts. It is suitable for both street and racing applications, making it an excellent choice for those seeking high horsepower and reliability. The GM 396 375 HP Port 3873858 engine block is a testament to the company's commitment to innovation and quality, delivering top-tier performance in a robust and reliable package.

1. Powerful: With 375 horsepower, this engine offers a significant boost in power compared to standard engines.

2. High Performance: The LS6 engine is known for its high-performance capabilities, making it a great choice for those looking for a powerful engine.

3. Durability: The LS6 engine is known for its durability and reliability, which can save you money in the long run.

4. Square Bore: The square bore design helps to improve engine efficiency and power output.

5. Big Block: The big block design provides more space for larger pistons and cylinders, which can result in increased power and torque.

1. Cost: The LS6 engine is more expensive than standard engines, which can be a significant investment for some buyers.

2. Installation: Installing the LS6 engine can be a complex and time-consuming process, requiring specialized tools and expertise.

3. Fuel Efficiency: The LS6 engine is not known for its fuel efficiency, which can result in higher fuel costs.

4. Compatibility: The LS6 engine may not be compatible with all vehicles, which can limit your options when it comes to vehicle selection.

The GM 396 375 HP LS6 engine is a powerful and high-performance option for those looking to upgrade their vehicle's engine. While it comes with a higher price tag and may require specialized installation, its durability and reliability can save you money in the long run. If you are looking for a powerful engine and are willing to make the investment, the LS6 engine is a great choice. However, if you are looking for fuel efficiency or compatibility with a wider range of vehicles, you may want to consider other engine options.

If you are looking for a powerful engine and are willing to invest in a high-performance option, the GM 396 375 HP LS6 engine is a great choice. However, be sure to consider the cost of installation and potential compatibility issues before making your final decision. It's also a good idea to research different engine options to ensure that the LS6 engine is the best fit for your needs and budget.

Details:

These heads are the high performance versions with rectangular intake ports and closed combustion chambers. The externals of the heads are completely stock and look great. The casting number on each head is these heads should make your engine run like a raped ape. Don't miss out.

They were only removed since the heads were the wrong casting number for the car they were on. These heads are in very nice condition as shown. Cracks were found around the exhaust guides which is pretty common and was likely caused during guide replacement. This is a pair of original Gm cylinder heads for a Big Block Chevy engine.

These heads were removed from a good running engine with no issues. These heads were also used as a direct replacement for casting numbers, , and the ports and chambers have been very nicely debarred and polished as shown. The heads were surfaced in the past and the deck surfaces look great. These heads were used by Gm on 1966 l78 396 375hp, 427 425hp, and 427 450hp engines.

The heads were both pressure tested and have no leaks.

part #: 3873858 prices

• $895.00-$2499.99

specifications cylinderheapar:

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

Ratings:

1. Product matched . 04-06-15
2. Excellent 04-06-15
3. A+ buyer 04-06-15

Payments:

• PayPal

General:

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

Returns:

• policy: returns accepted
• time: 14 Days
• paid by: Buyer
• details: Returns accepted for 14 days for a full refund of the purchase price. Parts must be in the same condition as received. Buyer responsible for all shipping costs.
• type: Money Back

Seller:

• zipcode: 95060
• city: Santa Cruz, California

Shipping:

• handling: 1 days
• type: Flat
• cost: $108.85

Offer:

• Started: April 6, 2015, 11:12 pm
• quantity: 1
• # Sold: 0
• best offer: true
• # bids: 0

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