Product details:
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. SUM-172300 fits these applications: CHEVROLET 7.0L/427 Chevy small block Gen III/IV (LS-based engines), CHEVROLET 6.2L/376 Chevy small block Gen III/IV (LS-based engines), CHEVROLET 6.0L/364 Chevy small block Gen III/IV (LS-based engines), CHEVROLET 5.7L/350 Chevy small block Gen III/IV (LS-based engines), CHEVROLET 5.3L/325 Chevy small block Gen III/IV (LS-based engines), CHEVROLET 4.8L/294 Chevy small block Gen III/IV (LS-based engines).
