![Chevy GM LS STD Main Bearings [4.8 5.3 5.7 6.0 6.2] but with several important modifications](https://cdn.shopify.com/s/files/1/0762/0316/3867/files/PCE325.SBC_412361dc-9b92-4e72-b323-99f89a46ea39.jpg?v=1784401875)
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but with several important modifications
The outer cases made from 8620 Chrome-Nickel-Moly steel and the case hardened for long life and improved strength
Let everyone know you take high performance seriously by flying the Speedmaster name and colors on a Speedmaster banner
you will need to make sure that your ride has 17 in
and one 3mm spacer
Chevy GM LS STD Main Bearings [4.8 5.3 5.7 6.0 6.2] but with several important modificationsThese Speedmaster main bearings are just what you need to freshen up your engine. Why? They use silicon aluminum bi metal construction. Silicon aluminum is the choice for many of today's engine manufacturers because of its high fatigue strength and superior temperature threshold. Bearing wear is dramatically reduced and the fatigue strength is greatly improved.
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