Oil Restrictors Dart / Chevy SHP 1 Pair .030

The Allstar Performance Oil Restrictors Dart / Chevy SHP 1 Pair .030 are essential flow-control components designed specifically for high-performance small block Chevrolet engines that demand precision oil management under extreme conditions. These restrictors address a common issue in racing and modified street engines: uncontrolled oil bypass flow that can compromise bearing protection and hydraulic stability during sustained acceleration and engine loads.

With a .030 inch orifice diameter, this pair of restrictors is engineered to match factory and aftermarket oil pump specifications on small block applications. They regulate flow to critical passages, ensuring adequate pressure reaches vital components when it matters most. The design creates a precise bottleneck in the oil system, maintaining proper backpressure on the main gallery while allowing excess oil to return to the pan at a controlled rate.

These restrictors are particularly beneficial for those building competition engines or upgrading street performance platforms. They prevent oil starvation at the crankshaft and rod journals during high-RPM operation and aggressive cornering, where centrifugal forces can cause oil to migrate away from critical lubrication points. Allstar's manufacturing standards ensure tight tolerance and consistent orifice sizing, which is crucial for maintaining optimal system pressure and flow characteristics.