L-B ENGINE WORKS M55I Diesel Engines Oil Pump 381//6.2 6.8L

( Brand: L-b Engine Works ), ( Type: Oil Pump ), ( Manufacturer Part Number: M55I ), ( Country/region Of Manufacture: United States ), ( Vintage Part: Yes )

Review L B ENGINE WORKS 1982 93 Chevrolet 381//6.2 And 1992 96 6.8l Diesel Engines Oil Pump Usa Made fits 1982-93–1992-96

The Chevrolet M55 engine, specifically the 1982-1993 381 cubic inch (6.2 liter)small-block V8 gasoline variant and the 1992-1996 6.8 liter (410 cubic inch) diesel engine, both possess distinctive attributes that make them popular among automotive enthusiasts.

The gasoline M55 engine's 381 cubic inch (6.2 liter) variant was initially introduced as part of the third-generation small-block V8 family and is renowned for its robustness and power delivery. Featuring a bore and stroke of 4.06 inches and 3.44 inches (103.6mm x 87.1mm), this engine layout boasts a unique cross-bolted main bearing caps design for improved durability, and an established cast iron block and aluminum cylinder heads. It delivers an impressive output of around 220 horsepower at 4400 rpm and 345 lb-ft of torque at just 2400 rpm, making it a reliable performer in its class.

Switching gears to the diesel M55 engine's 6.8-liter (410 cubic inch) variant, which marked Chevrolet's first venture into diesel engine technology for light vehicles in the United States, is a distinct shift. This heavy-duty engine was initially developed by Isuzu and licensed for use by General Motors. With a bore and stroke of 3.95 inches and 3.94 inches (99.8 mm x 99.6 mm), it strongly resembles its Isuzu TD series counterparts.

The M55 diesel engine's unique features include a forged-steel crankshaft, forged pistons, and an iron block. This engine also benefits from a turbocharger system with a Garret AiResearch T1/T3 turbocharger and a Bosch fuel injection system. Producing approximately 185 horsepower at 3300 rpm and a massive 435 lb-ft of torque at just 1800 rpm, this M55 diesel engine boasts impressive power and torque output for its time and is suitable for various applications, from trucking to motorhomes.

Both engines share some commonalities, such as an oil pump design that relies on mechanical components to circulate oil through the engine. The M55 engines' oil pumps are engineered to be efficient and reliable, ensuring accurate oil distribution and lubrication for the engine components during operation. These pumps play a crucial role in the engine's longevity and performance.

In summary, Chevrolet M55 engines, specifically the gasoline 381 (6.2 liter) and diesel 6.8-liter (410 cubic inch) variants, offer distinct features that cater to an array of automotive interests and applications. Both engines' impressive power outputs and robust design have established a lasting legacy among enthusiasts. Equipped with reliable oil pumps, these engines deliver robust performance while leaving a trail of enduring satisfaction.

The Chevrolet Silverado trucks equipped with the M55 engine (5.7L V8, 350 cubic inches, 1982-1993) and the 6.2L/6.8L diesel engines (1992-1996) have their unique characteristics, advantages, and disadvantages for potential buyers. Here is a straightforward analysis of both.

1. Widely available: These engines have been used in numerous trucks and GMC motorhomes, leading to a large used market with readily available parts and support.

2. Relatively simple design: The M55 V8 engine is known for its durability and dependability; straightforward design aids ease of maintenance.

3. Fuel efficiency for a V8: The engine delivers decent fuel economy for its class, making it a popular choice among vintage truck enthusiasts.

1. Limited power output: This engine delivers lower horsepower and torque compared to modern options, which may not be suitable for heavy-duty towing or high-speed applications.

2. Age-related issues: The engines from the 1982-1993 period may show signs of wear and tear after extended use, causing potential issues and maintenance requirements.

3. Environmental considerations: Given that these engines are older, they don't meet modern-day emission standards and would require modifications for street legality or off-road use.

1. Power: The diesel engines deliver ample power and torque, making them suitable for towing heavy loads and handling demanding tasks.

2. Fuel efficiency: These engines deliver impressive fuel economy and long fuel range compared to their gasoline counterparts.

3. Durability: Known for long-lasting reliability, diesel engines typically require minimal maintenance and can cover substantial mileages.

1. Complex Design: Diesel engines are more intricate compared to their gasoline counterparts, necessitating specialized knowledge and skills for repair and maintenance.

2. Emission concerns: The 1992-1996 engines do not meet current emissions standards and would require expensive modifications to comply with newer regulations.

3. Noise level: Diesel engines tend to be louder and rougher than their gasoline alternatives, which may not be desirable for all owners.

Both M55 V8 and 6.2L/6.8L diesel engines, while having their merits, also come with significant challenges. The M55 V8 engines offer decent fuel economy and simplicity, whereas diesel engines deliver impressive power and fuel economy, but are generally more complex. The choice between them depends on the buyer's priorities and individual circumstances.

For those seeking a more straightforward, fuel-efficient, and less powerful engine for lighter towing applications or spare parts collection, the M55 V8 may be the better option. If you prioritize power, fuel economy, and towing capabilities while embracing the challenges of a more complex engine system, the 6.2L/6.8L diesel engines are worth considering. Ultimately, careful research, budget planning, and compatibility with the intended use and ownership experience are crucial factors to ensure the best choice for your needs.

Details:

1982 -83-84-85-86-87-88-89-90-91-92-93-94-95-96 Chevrolet 381//6.2 1992 96 6.8L Diesel Engines Oil Pump USA Made M55I, 1982 93 M55I Blazer, Suburban Silverado, See photos below for details. All return items must be complete, undamaged, unaltered and in resale condition.

part #: m55i prices

• $76.23-$129.56

specifications pumppruner:

• for makes: Chevrolet
• for years: 1982-93-1992-96
• brand: L-b Engine Works
• type: Oil Pump
• manufacturer part number: M55I
• country/region of manufacture: United States
• vintage part: Yes

general pumppruner:

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

payments pumppruner:

• wallet: Google-pay
• credit card: Mastercard
• other

shipping pumppruner:

• class: Expedited
• transit: 3-8 Days
• type: Fixed
• carrier: USPS
• service: USPS Priority Mail Medium Flat Rate Box
• cost: $14.99

seller pumppruner:

• city: Albany, Oregon
• rating: 99.6%
• # reviews: 29112

offer pumppruner:

• availability: In Stock
• started: February 5, 2025
• best offers: True
• quantity: 4
• options: Ship-to-home
• sold: 0

returns pumppruner:

• paid by: Buyer
• policy: Returns Accepted
• time: 30 Days

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