fits model: 396, 427. make: Chevy.

( Manufacturer Part Number: 3919838 ), ( Part Type: Aluminum Head Motor ), ( Placement On Vehicle: Left ), ( Country/region Of Manufacture: United States )
The 3919842 nos Chevy 396 L89/427 L88 Rectangle Port Heads are a must-have for any serious hot rod or muscle car enthusiast. These heads are designed to deliver maximum power and performance, making them a popular choice among racers and high-performance builders.
The 3919842 nos Chevy heads are cast from high-quality aluminum alloy, which provides excellent heat dissipation and durability. The rectangle port design allows for optimal airflow into the cylinders, resulting in increased combustion efficiency and horsepower. The L89 and L88 designations indicate that these heads are compatible with the Chevy 396 and 427 engines, respectively, which are known for their powerful and reliable performance.
These heads feature 2.02-inch intake and 1.60-inch exhaust valves, which are larger than stock heads, allowing for more air and fuel to enter and exit the cylinders. The valve guides are made of high-temperature, chrome-molybdenum steel for durability and longevity. The heads also include CNC-ported combustion chambers, which are designed to maximize combustion efficiency and power output.
The 3919842 nos Chevy heads also include new valve springs and retainers, as well as new valve locks and pushrods. These components are designed to handle the increased power and stress that these heads can produce, ensuring reliable and consistent performance.
In addition to their performance benefits, the 3919842 nos Chevy heads also have a classic and timeless appearance. The smooth, rectangle port design is reminiscent of the original L89 and L88 heads, which were famous for their power and performance in the 1960s and 1970s. These heads are a great way to add some vintage style to a modern hot rod or muscle car build.
Overall, the 3919842 nos Chevy 396 L89/427 L88 Rectangle Port Heads are a high-quality and powerful upgrade for any Chevy 396 or 427 engine. With their large valves, CNC-ported combustion chambers, and durable construction, these heads are designed to deliver maximum power and performance, making them a must-have for any serious hot rod or muscle car builder.
Pros of buying 3919842 nos Chevy 396 L89/L88 rectangle port heads:1. Authenticity: These are original factory heads that were used on high-performance Chevy engines.
2. Performance: The rectangle port design allows for more air and fuel to enter the engine, which can improve horsepower and torque.
3. Rarity: These heads are not commonly found, so they add a unique touch to any build.
4. Quality: Factory heads are often made with high-quality materials and construction, which can lead to better longevity and reliability.
Cons of buying 3919842 nos Chevy 396 L89/L88 rectangle port heads:1. Cost: Original factory heads can be expensive, especially when they are in good condition.
2. Availability: They may be difficult to find, especially if you are looking for a specific year or model.
3. Fitment: Make sure the heads will fit your engine and engine bay before purchasing.
4. Compatibility: You may need to modify other parts of your engine or intake system to work with these heads.
Conclusion: If you are looking for high-performance heads that will add a unique touch to your build, then 3919842 nos Chevy 396 L89/L88 rectangle port heads could be a great option. Just make sure you are prepared for the cost and potential modifications required to make them work with your engine.
Recommendation: If you are unsure about whether these heads are right for your build, it may be worth consulting with a professional engine builder or mechanic to get their expert opinion. They can help you determine if the performance gains are worth the cost and work required to make them fit.
Pair of gm part or better known by the casting aluminum cylinder heads for a big block Chevy. You just won't get many if any opportunities to buy these nos again. Used for 1968 Camry 396 375hp l89 corvette 427 430hp l88 and 435hp also in 1969 Chevalier being parts replacement heads they do not have threaded plugs either end of the head. This a very rare to find as n.
New in original boxes never machined or mounted, these are bare nos heads.