GM 3998997 Nos Cylinder Head

( Brand: Gm ), ( Manufacturer Part Number: 3998997 ), ( Part Type: Cylinder Head ), ( Placement On Vehicle: Left ), ( Surface Finish: Cast Iron )

Review GM Nos Chevy Cylinder Head Dated fits 400 350 1970–1974

The 3998997 series of cylinder heads are designed specifically for 1970, 1971, 1972, and 1973 Chevy models equipped with 400 or 350 cubic inch engines. These GM Original Equipment Manufacturer (OEM) parts are crafted with precision and are direct replacements for your worn-out or damaged cylinder heads.

These cylinder heads feature a robust cast-iron construction, ensuring durability and reliability under extreme engine conditions. They are equipped with four-bolt main caps and four-bolt head bolts for enhanced engine stability. The combustion chambers are designed to optimize air-fuel mixture for superior combustion efficiency and power output.

The intake and exhaust ports are CNC-machined for precise flow characteristics, ensuring optimal air and fuel delivery to the combustion chambers. The cylinder heads also feature fully-machined valve seats, and the valve guides are made of high-quality materials for long-lasting performance.

Additionally, these cylinder heads come with pre-installed hardened valve seats and stainless steel valves, ensuring a smooth and efficient airflow. They are also compatible with various camshaft profiles, allowing for custom tuning for increased horsepower and torque.

Overall, the 3998997 series of cylinder heads are high-quality replacement parts that provide superior performance and reliability for your 1970, 1971, 1972, and 1973 Chevy 400 or 350 engines. They are backed by GM's reputation for quality and durability, ensuring that you get the best possible performance for your Chevy.

1. Affordability: Compared to newer or more high-end engines, these older cylinder heads are typically more affordable, making them a cost-effective option for some car enthusiasts or DIY mechanics.

2. Availability: Being a common engine in its time, these cylinder heads are widely available in the aftermarket, making it easy to find replacement parts or upgrades.

3. Compatibility: These cylinder heads are compatible with a wide range of vehicles, including different models of Chevrolet, GMC, and other GM vehicles, making them a versatile option.

1. Performance Limitations: While these cylinder heads can perform well, they may not offer the same level of power or efficiency as newer, more advanced designs.

2. Quality Concerns: Depending on the condition and history of the cylinder head, there may be concerns about wear, corrosion, or other damage that could affect its performance or longevity.

3. Limited Upgrade Options: While there are some aftermarket upgrades available for these cylinder heads, the options may be more limited compared to more modern engines.

If you are looking for a cost-effective and widely available option for your 1970-74 Chevy or GM vehicle, a 400/350 cylinder head may be a good choice. However, you should carefully consider the potential performance limitations, quality concerns, and limited upgrade options to ensure that this is the right fit for your needs.

If you are considering purchasing a 1970-74 Chevy 400/350 cylinder head, I would recommend doing thorough research and inspection to ensure that you are getting a high-quality, well-maintained part. You may also want to consider upgrading certain components, such as the valves or camshaft, to maximize performance. Ultimately, the decision to purchase a 400/350 cylinder head should be based on your specific needs, budget, and goals for your vehicle.

Details:

It has the steam holes for 400 motor. This is one nos, original Gm Chevy cylinder head it in very good condition. This is the head all stock car racers use as it flows good and make horsepower.

Includes the original Gm box.

part #: 3998997 price

• $299.99

specifications cylinderheapar:

• for models: 400, 350
• for makes: Chevy
• for years: 1970-1974
• brand: Gm
• mpn: 3998997
• part type: Cylinder Head
• placement on vehicle: Left
• surface finish: Cast Iron

Returns cylinderheapar:

• paid by: Buyer
• type: Money Back
• policy: returns accepted
• time: 30 Days
• details: Items must be returned in the same condition as they were shipped.

Seller cylinderheapar:

• zipcode: 34482
• city: Ocala, Florida

Shipping cylinderheapar:

• type: Flat
• handling: 1 days
• cost: $50.0

General cylinderheapar:

• motors > partsaccessories > vintage cartruck parts > enginescomponents > cylinder headsparts engines components
• condition: New other see details
• in stock: Yes

Payments cylinderheapar:

• PayPal
• PersonalCheck
• MOCC

Ratings:

1. awesome seller, would purchase from again AAAAAAAAAAA 03-20-17
2. Very nice bellhousing, fast shipping. AAAAA 03-26-17
3. Hope to deal with you again. Thank you. 03-27-17
4. Great item thanks 03-24-17
5. Good to deal with, great shipping time 03-20-17

Offer cylinderheapar:

• Started: March 27, 2017, 11:33 am
• quantity: 1
• bids: 0
• best offer: false
• Sold: 0

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