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  3. CLASSIC INDUSTRIES MN45058

CLASSIC INDUSTRIES MN45058 Pack Kit Block

fits model: 340. make: Mopar. year: 1970-71.

Mn45058 Classic Industries 1970-71 Mopar 340 Six Pack Installation Kit Small Block

( Brand: Classic Industries ), ( Part Type: Block ), ( Manufacturer Part Number: MN45058 )

Review CLASSIC INDUSTRIES Mopar Six Pack Installation Kit Small Block fits 340 1970-71

The Classic MN45058 1970-71 Mopar 340 Package Kit Block is a high-performance engine component designed for classic Mopar muscle cars. This engine block is a key upgrade for Mopar enthusiasts seeking to boost horsepower and improve the overall performance of their 340-cubic inch engines.

The MN45058 block is a cast iron engine block with a factory-installed knock sensor boss for improved engine durability and stability. It features a raised deck design to accommodate larger and rounder pistons, allowing for increased volume and combustion efficiency. This results in more power and torque output.

The block's square-bore design is another distinctive feature, providing optimal cylinder size for better air-fuel mixture and enhanced combustion. The four-bolt main caps provide additional strength and durability to the crankshaft.

Moreover, the MN45058 block includes factory-installed chrome moly steel crankshaftix, an upgraded material that increases crankshaft rigidity and resistance to twisting and deflection during high-performance operation. This modification limits power loss and enhances engine efficiency.

Additionally, the block has been machined to accept aftermarket hydraulic roller camshafts and lifters, offering better valve performance and improved engine response. It is also compatible with various aftermarket cylinder heads to cater to various racing applications.

In terms of cooling, the MN45058 block is equipped with increased coolant capacity and large copper-nickel coolant passages crucial upgrades for high-performance engine applications where cooling efficiency plays a significant role in ensuring reliability and longevity.

For enhanced oiling, the kit includes longer oil pickup tubes to improve oil coverage within the crankcase, supporting consistent lubrication of the engine components. It is also fully compatible with various aftermarket high-performance oil pumps, ensuring adequate oil flow for high RPM operation.

This high-performance engine block came factory-drilled and tapped for factory-installed equipment such as oil coolers and timing gear drives. This convenience allows easy installation and integration with various aftermarket performance components when upgrading an engine for competitive racing applications.

In summary, the Classic MN45058 1970-71 Mopar 340 Packaging Kit Block is a must-have for muscle car enthusiasts seeking increased horsepower, improved engine stability, and advanced cooling capabilities for their Mopar 340 engines. By utilizing a cast iron material, square bore design, and factory-installed chrome moly steel crankshaftix, this engine block grants muscle car owners the power and performance they crave for an authentic driving experience.

purchasing a classic Mopar 340 Packaging Kit Block for a 1970-71 Mopar vehicle, such as the MN45058, can have both advantages and disadvantages, depending on your specific circumstances and goals. I will outline some potential pros and cons below.

Pros:

1. Authenticity: The Mopar 340 Packaging Kit Block is an original factory assembly. Installing it in your classic car would maintain its originality and increase its value for collectors, especially if it's a desirable muscle car from that era.

2. Increased Performance: This engine upgrade kit includes numerous performance enhancements, such as a higher compression ratio, larger carburetors, and improved intake manifolds, resulting in increased horsepower and torque for better acceleration and overall driving experience.

3. Factory Engine Build: The factory engine block guarantees consistent quality and proper clearances, as it was manufactured according to Mopar's specifications. This can lead to improved performance and reliability.

Cons:

1. Cost: The Mopar 340 Packaging Kit Block might have a higher upfront cost compared to performing individual engine upgrades or purchasing a used engine. This additional investment should be considered in the context of your budget and your overall project goals.

2. Obsolesce: Since these engines were first manufactured more than 50 years ago, parts may be harder to come by and generally more expensive only through Mopar or other specialized sources. This can increase the cost of ongoing maintenance and repairs.

3. Hemibrid Engine: The Mopar 340 package provided only a mild power upgrade compared to the contemporary 426 Hemi engines at the time, which might not provide as much boost in power for the cost of the engine upgrade.

Conclusion:

In conclusion, purchasing a Mopar 340 Packaging Kit Block for a 1970-71 Mopar vehicle can contribute to the authenticity and performance of the car. However, due to the increased upfront cost, scarcity of parts, and potential reliability concerns, it's crucial to carefully consider the investment in light of your personal goals, budget, and alternatives.

Recommendation:

If you're dedicated to maintaining your classic car's originality and desire a performance boost while staying authentic to the brand, then the Mopar 340 Packaging Kit Block could be a worthwhile investment. However, if you're focusing on cost-effectiveness, modern reliability, or desire maximum horsepower, it might be wise to explore alternative options, such as contemporary engine swaps or individual engine upgrades. Thoroughly researching your choices and consulting with experts in the field can help you make an informed decision tailored to your specific circumstances.

part # mn45058 prices

  • $80.00-$115.00

specifications carbcaddie:

  • for models: 340
  • for makes: Mopar
  • for years: 1970-71
  • brand: Classic Industries
  • part type: Block
  • manufacturer part number: MN45058

seller carbcaddie:

  • # reviews: 14216
  • rating: 99.1%

general carbcaddie:

  • condition: New
  • Car Truck Parts Accessories > Air Fuel Delivery > Carburetor Parts

returns carbcaddie:

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

offer carbcaddie:

  • availability: In Stock
  • quantity: 1
  • options: Ship-to-home
  • started: January 30, 2025
  • sold: 0

shipping carbcaddie:

  • transit: 4-8 Days
  • class: Standard
  • service: UPS Ground
  • type: Calculated
  • carrier: UPS
  • cost: $0.00

payments carbcaddie:

  • credit card: Discover
  • other
  • wallet: Google-pay
for models: 340, for makes: mopar, for years: 1970-71, part type: block,
category: auto parts > car truck parts accessories > air fuel delivery > carburetor parts, sku: 1783090178959573,

Classic Industries MN45058 Is Similar To:

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2 offers $80.00–$115.00 USD
  • Offer #1: $115.00 price + $92.00 delivery = $207.00* total.+$92.00 shipping
  • Offer #2: $80.00 price + $92.00 delivery = $172.00* total.+$92.00 shipping