![Chevy GM LS STD Main Bearings [4.8 5.3 5.7 6.0 6.2] Speedmaster pushrods are available in](https://cdn.shopify.com/s/files/1/0762/0316/3867/files/PCE325.SBC_412361dc-9b92-4e72-b323-99f89a46ea39.jpg?v=1784401875)
Pay in 4 interest-free payments of $12.85 Learn more
Ships within 48 hours · Estimated delivery Oct 6 - Oct 11
Speedmaster pushrods are available in both 5/16 in
Their dual-idler design has CNC-machined components and they are easy to install
Featuring a boltin EFI downdraft injection system and complete serpentine drive kit
Speedmaster electric fuel pump is compatible with alcohol or methanol fuels
filter element
Chevy GM LS STD Main Bearings [4.8 5.3 5.7 6.0 6.2] Speedmaster pushrods are available inThese 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.
