1. Car & Truck Engines Used/New Products
  2. sku: 4261979178883761
  3. GM 3965774

GM 3965774 Counter Engine L88 502

fits model: Zr1, Zr2, Ls6, Ls5, Ls-7, 396, 427, 454.

3965774 Gm 396 427 L88 Zr1 Zr2 Ls6 Ls5 Rare 454 Ls-7 Over The Counter Crate Engine 502

( Brand: Gm ), ( Type: Complete Motor, No Carb, Ignition ), ( Oe/oem Part Number: 3965774 ), ( Block Type: V8 ), ( Number Of Valves: 16 ), ( Engine Size: 7.4 L ), ( Vintage Part: Yes ), ( Country/region Of Manufacture: United States ), ( Fuel Type: Gasoline )

Review GM L88 Rare Over The Counter Crate Engine 502 fits ZR1 ZR2 LS6 LS5 LS-7 396 427 454

The GM 396 427 L88 ZR1 ZR2 LS6 LS5 454 LS-7 counter engine, identified by the part number 3965774, is a high-performance powertrain component designed for use in select Chevrolet muscle cars. This engine is a big-block V8 powerhouse, boasting a displacement of 396 cubic inches or 6.5 liters.

The L88 designation signifies that this engine was built to the highest performance standards during its production. It features an aluminum cylinder block with cast-iron sleeves for enhanced durability and heat dissipation. The cylinder heads are also made of aluminum, and they are ported and polished for optimal airflow.

This engine is equipped with a 4-bolt main bearing design for increased strength and rigidity. The crankshaft is forged steel, and it is balanced and blueprinted to ensure smooth operation. The connecting rods are also forged steel, and they are designed to handle the high torque output of this engine.

The L88 engine comes with a unique intake system that consists of a single quad-barrel carburetor and a special intake manifold. This setup allows for excellent airflow and a potent powerband. The exhaust system features high-performance headers and catalytic converters to maximize power and reduce emissions.

The camshaft in this engine is a high-lift design, which contributes to its impressive power output. The valvetrain system is also upgraded with hardened pushrods, adjustable rocker arms, and high-performance lifters.

The L88 engine is capable of producing horsepower in the range of 500-600 hp, depending on the specific tuning and modifications made to the engine. It delivers a thrilling driving experience, with a deep, powerful exhaust note and a responsive, torquey powerband.

This engine is suitable for use in a variety of applications, including the Chevrolet Corvette, Chevelle, Camaro, and other muscle cars. It requires a high level of expertise to install and tune, and it is recommended for experienced engine builders and racers.

In summary, the GM 396 427 L88 ZR1 ZR2 LS6 LS5 454 LS-7 counter engine is a high-performance powertrain component designed for muscle car enthusiasts and racers. With its big-block V8 design, aluminum cylinder block, high-lift camshaft, and other performance upgrades, this engine delivers an exhilarating driving experience and impressive power output. It is a true showpiece for any muscle car enthusiast's collection.

The GM 396/427 L88, ZR1, ZR2, LS6, LS5, 454, and LS-7 engines are high-performance V8 engines produced by General Motors between 1965 and 2004. These engines share some similarities but also have distinct differences, making it essential to consider various factors before deciding to buy one. Here are some pros and cons of buying these engines.

Pros:

1. Power and Performance: These engines are known for their impressive power and performance. They deliver high horsepower and torque, making them suitable for those who seek a thrilling driving experience.

2. Rich History: These engines have a rich history and are highly sought after by collectors and enthusiasts. Owning one of these engines can be a source of pride and satisfaction for car aficionados.

3. Customizability: These engines offer a high level of customizability. Enthusiasts can easily modify and tune these engines to enhance their power and performance.

4. Rare and Collectible: Due to their limited production, these engines are considered rare and collectible. Their value may increase over time, making them a good investment for collectors.

5. Durability: These engines are known for their durability and reliability. They were designed to withstand the rigors of high-performance driving and can last for many years with proper maintenance.

Cons:

1. Expensive: These engines are expensive to purchase and maintain. They require high-quality parts, specialized tools, and regular maintenance to keep them running optimally.

2. Fuel Efficiency: These engines are not known for their fuel efficiency. They consume a significant amount of fuel, which can be a drawback for those who prioritize economy over performance.

3. Complexity: These engines are complex and require a high level of expertise to repair and maintain. Finding a qualified mechanic who is familiar with these engines can be challenging and expensive.

4. Emissions Compliance: These engines do not meet modern emissions standards, making them illegal to use in daily driving in many areas without modifications.

5. Availability: Due to their limited production, these engines can be challenging to find in good condition. Buying a rebuilt or used engine may require significant research to ensure its authenticity and quality.

Conclusion:

The decision to buy a GM 396/427 L88, ZR1, ZR2, LS6, LS5, 454, or LS-7 engine depends on your personal preferences, budget, and intended use. These engines offer impressive power and performance, a rich history, and a high level of customizability. However, they also come with significant costs, complexity, and limitations.

If you are an enthusiast or collector looking for a rare and collectible engine, these engines may be an excellent investment. However, if you prioritize fuel efficiency, ease of maintenance, or daily driving, these engines may not be the best choice for you. Ultimately, it is essential to carefully consider the pros and cons and weigh them against your specific needs and preferences before making a decision.

Recommendation:

If you are considering buying one of these engines, I would recommend doing thorough research to ensure that you are getting a high-quality, authentic engine. Look for reputable sellers, seek advice from experts in the field, and be prepared for the significant costs associated with ownership. Additionally, consider your intended use and personal preferences to determine if one of these engines is the right fit for you.

Details:

It is a performance part with V8 block type, 7.4 L engine size, and 16 valves. The product is a rare and vintage GM 454 LS-7 over-the-counter crate engine with part number 3965774. BLOCK#14015445 DECK # T07074XH HEADS 6272990 CRANKSHAFT 3967416 0.10 RODS AND MAINS INTAKE 3933163 FACTORY DIMPLE RODS, This complete motor does not include a carburetor or ignition, and is compatible with various GM engines such as the 396, 427, 502. Made in the USA, this gasoline-fueled engine is a sought-after choice for enthusiasts looking powerful and classic addition to their vehicle.

part #: 3965774 prices

  • $12000.00-$25500.00

specifications grokengines:

  • for models: Zr1, Zr2, Ls6, Ls5, Ls-7, 396, 427, 454
  • brand: Gm
  • type: Complete Motor, No Carb, Ignition
  • oe/oem part number: 3965774
  • block type: V8
  • number of valves: 16
  • engine size: 7.4 L
  • vintage part: Yes
  • country/region of manufacture: United States
  • fuel type: Gasoline

general grokengines:

  • Car Truck Parts Accessories > Engines Engine Parts > Engines
  • condition: Remanufactured

shipping grokengines:

  • service: USPS Ground Advantage
  • transit: 5-12 Days
  • class: Standard
  • cost: $0.00
  • type: Calculated
  • carrier: USPS

seller grokengines:

  • city: Moneta, Virginia
  • rating: 100.0%
  • # reviews: 10

payments grokengines:

  • wallet: Apple-pay
  • credit card: Discover

returns grokengines:

  • policy: No Returns

offer grokengines:

  • started: March 19, 2025
  • sold: 0
  • quantity: 1
  • availability: In Stock
  • options: Ship-to-home
  • best offers: True
for models: zr1, zr2, ls6, ls5, ls-7, 396, 427, 454, type: complete motor, no carb, ignition, oe/oem part number: 3965774, block type: v8, number of valves: 16, engine size: 7.4 l, vintage part: yes, country/region of manufacture: united states, fuel type: gasoline,
category: auto parts > car truck parts accessories > engines engine parts > engines, sku: 4261979178883761,

Gm 3965774 Is Similar To:

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4 offers $12000.00–$25500.00 USD
  • Offer #1: $12500.00 price + $0.00 shipping estimate = $12500.00* total. It is a performance part with a V8 block type, 7.4 L engine size, and 16 valves. This complete motor does not include a carburetor or ignition, and is compatible with various GM engines such as the 396, 427, and 502.FREE SHIPPING
  • Offer #2: $12000.00 price + $0.00 shipping estimate = $12000.00* total. (All bottom end is still original forged steel). PN , 454CID, 12.25:1 compression, 4 bolt main block, 5140 forged steel crank, w/cross-drilled mains 3963524, 4340 forged steel connecting rods with 7/16 in.FREE SHIPPING
  • Offer #3: $25500.00 price + $295.00 shipping estimate = $25795.00* total. These are two of the coolest Rat motors ever to roll down an assembly line.". 450HP AND 500 FT LB TORQUE AT ONLY 4300RPM TIRE SHREADER! That 500hp is impressive but the fact that the engine made more than 600 lb/ft of torque made it a super shredder.+$295.00 shipping
  • Offer #4: $22995.00 price + $Calculated shipping estimate = $22995.00* total. It was the ultimate form of 454 in its era and was a worthy successor to the legendary L88 427. However, it arrived on the scene just as the tide was turning for muscle cars.+$Calculated shipping

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