427 L-71 L-72 COPO YENKO 858 L-78 3969942 Port Gm Block Big 3873858 Heads 67 68 3964291 425HP
fits model: Ls-6, 425, 396, 427. make: Chevy. year: 1970–1978.
( Brand: 427 L-71 L-72 Copo Yenko 858 L-78 ), ( Manufacturer Part Number: 3969942 ), ( Part Type: Hp Block Head ), ( Surface Finish: 3873858 Square Port Hi Perf High Performance Ls6 ), ( Years: 67 68 69 70 71 72 3964291 375hp 375 Hp 425 425hp )
Review 427 L-71 L-72 COPO YENKO 858 L-78 L72 Port Hp L71 375 Gm Chevy Original L78 Block Rectangular Heads Big fits LS-6 425 396 427 1970–1978
The 3873858 L72 LS-6 Yenko is an exquisite high-performance automotive component that is sure to captivate any car enthusiast. This part is specifically designed for the 1972 Chevrolet Chevelle, and is a direct replacement for the 396 375 GM engine.
This L72 LS-6 Yenko engine features a powerful 425 horsepower, which is achieved through the use of a 427 cubic inch big-block engine, complete with L71 and L72 heads. The L78 block is used for enhanced durability and reliability, ensuring that this engine can withstand the rigors of high-performance driving.
The L72 LS-6 Yenko engine is also equipped with COPO heads, which are known for their superior airflow and heat dissipation capabilities. This means that the engine can breathe more efficiently, allowing it to produce more power and run cooler under heavy loads.
In addition to its impressive power output, the 3873858 L72 LS-6 Yenko engine is also known for its exceptional performance and longevity. It features a high-strength crankshaft, forged pistons, and high-compression cylinder heads, all of which contribute to its impressive durability and reliability.
Overall, the 3873858 L72 LS-6 Yenko engine is a must-have for any Chevrolet Chevelle owner who is looking to take their car's performance to the next level. With its powerful 425 horsepower, COPO heads, and L78 block, this engine is sure to provide years of thrilling high-performance driving.
The 1972 Chevrolet Chevelle LS-6 Yenko 425 is a highly sought-after classic muscle car. Here are some pros and cons to consider before making a purchase:
Pros:1. Power and Performance: The L78 427 cubic inch V8 engine with Copo heads and a 4-speed manual transmission provides an impressive 425 horsepower and 450 lb-ft of torque.
2. Rarity: With only 69 examples built, this car is a rare find and is highly collectible.
3. Iconic Design: The Chevelle is a timeless design that is popular among muscle car enthusiasts.
4. Customization: With its L78 engine, this car is a great base for customization and personalization.
Cons:1. High Cost: Due to its rarity and desirable features, this car comes with a high price tag.
2. Maintenance and Repairs: Classic cars require regular maintenance and repairs, which can be expensive.
3. Fuel Efficiency: With its large engine and performance capabilities, this car is not known for its fuel efficiency.
4. Limited Comfort: Classic muscle cars often have limited comfort features compared to modern vehicles.
In conclusion, if you are a serious muscle car enthusiast with a significant budget, the 1972 Chevrolet Chevelle LS-6 Yenko 425 could be a great investment. However, it's important to consider the high cost of maintenance and repairs, and the limited comfort features. If you're looking for a daily driver or a car with better fuel efficiency, this may not be the best fit for you.
Details:
Don't miss this nice pair. The 427 was a fresh built engine in a fresh water jet boat. These heads were used by gm on 1966 l78 396 375hp, 427 425hp, and 427 450hp engines. The date code on both heads is b it turns out it was not funny.
The externals of the heads are completely stock and look great. The nicks are cosmetic only and will not effect operation. This is a pair of original gm cylinder heads for a big block Chevy engine. These are real deal mid year 66 heads.
These heads are in awesome condition as shown. One chamber has some nicks in it from a screw dropping in a cylinder as described above. The owner's grandson thought it would be funny to drop a screw down one of the exposed carbs on the tunnel ram on the engine. Don't miss out.
The screw went into a cylinder made a ruckus. The casting number on each head is the heads also have a very thick deck surface and the combustion chambers have never been modified. These heads came to me along with a block which is in my other listings.
These heads were also used as a direct replacement for casting numbers, , and these heads are the high performance versions with rectangular intake ports and closed combustion chambers. Finding a mid year set of 1966 hi perf heads without porting is very hard to do without making a deal with the devil.
This decodes as Feb 26th, one chamber on one of the heads got some nicks on the flat areas as shown but there is no mechanical damage to the heads. The result was a cracked cylinder. There are no breaks or repairs.
The ports are also completely stock with no porting or debarring. The grandpa was disgusted and never put the boat back together after disassembling the engine.
part #: 3969942 prices
- $350.00-$4999.99
specifications cylinderheapar:
- for models: Ls-6, 425, 396, 427
- for makes: Chevy
- for years: 1970-1978
- brand: 427 L-71 L-72 Copo Yenko 858 L-78
- mpn: 3969942
- part type: Hp Block Head
- surface finish: 3873858 Square Port Hi Perf High Performance Ls6
- years: 67 68 69 70 71 72 3964291 375hp 375 Hp 425 425hp
Offer cylinderheapar:
- best offer: true
- Started: November 25, 2015, 4:49 pm
- # Sold: 0
- quantity: 1
- # bids: 0
Ratings:
- Very Nice, The Best, Thanks, AA+++++++++++ 11-25-15
- Prompt shipping 11-25-15
- Great to deal with. Thank you 11-25-15
- Perfect 11-25-15
General cylinderheapar:
- Motors > Parts & Accessories > Vintage Car & Truck Parts > Engines & Components > Cylinder Heads & Parts
- condition: Used
- in stock: Yes
Payments cylinderheapar:
- PayPal
Seller cylinderheapar:
- zipcode: 95060
- city: Santa Cruz, California
Returns cylinderheapar:
- 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
- time: 14 Days
- paid by: Buyer
- policy: returns accepted
Shipping cylinderheapar:
- cost: $108.85
- handling: 1 days
- type: Flat
427 L-71 L-72 Copo Yenko 858 L-78 3969942 Is Similar To:
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