What is the purpose of the Tri Armor coating on these bearings?

The Tri Armor coating is a multi-layer application that helps retain oil and reduce friction. This is especially beneficial during the engine's break-in period, providing extra protection against wear.

Does this main bearing set include everything needed for installation?

This set includes the main bearings themselves. You will typically need to purchase a separate main bearing cap bolt and nut set, as well as engine assembly lubricant, to complete the installation.

Are these bearings suitable for a performance engine build?

Yes, Clevite is a well-known brand for engine components, and their Tri Armor bearings are built to handle the demands of both stock and mildly modified engines. They offer improved durability and wear resistance.

Clevite Main Bearing Set MS1038P - 1970-80 GMC 400 6.6L

Name: Clevite Tri Armor GMC Pass & Trk 400 6.6L 1970-80 Main Bearing Set
Brand: Clevite
Price: 115.15 USD
Availability: InStock

Clevite Tri Armor GMC Pass & Trk 400 6.6L 1970-80 Main Bearing Set

$115.15

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Clevite Tri Armor main bearing set MS1038P for 1970-80 GMC 400 6.6L engines.

Key Features

Fits 1970-1980 Chevrolet and GMC vehicles with a 400 cubic inch (6.6L) engine.
Features Clevite's Tri Armor coating for improved lubricant retention and wear protection.
Constructed with a strong overlay material to handle engine loads.
Designed as a direct replacement for the original main bearings.
Supports the crankshaft and ensures smooth rotation within the engine block.

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Will this fit your vehicle?

Product Details

If you're rebuilding the bottom end of your 1970-1980 GMC or Chevrolet truck or car with a 400 cubic inch (6.6L) engine, this Clevite Tri Armor main bearing set is what you need. These bearings are crucial for supporting the crankshaft and ensuring it spins smoothly within the engine block. They handle the immense loads generated during combustion and power transfer, so having a well-built set is key to engine longevity.

Clevite's Tri Armor coating is a notable feature here. It's a multi-layer coating designed to improve lubricant retention and reduce friction, especially during the critical break-in period. This helps protect the bearing surfaces from wear when the engine is first started and under initial load. The bearings themselves are made from a strong, high-performance overlay material that can handle the demands of these V8 engines. They are designed to fit right into the factory main bearing bores, making installation straightforward for a mechanic.

This set is designed for a wide range of popular GM vehicles from the 70s, including models like the Chevrolet C10, GMC C1500, and Chevrolet Impala. Ensuring you have the correct main bearings is a fundamental step in any engine rebuild or repair.