1.160" Od. 7 Degree 8mm Chromoly Steel Valve Spring Retainers [LS Dual] This is our most popular

This is our most popular manifold and is showing up on many performance street machines and street rods

Speedmaster EFI intake manifolds make it simple to convert competition engines to electronic fuel injection

The Speedmaster shift selector shaft is built with sturdy

These pans use the stock pickup

Slim line design for when space is at a premium

1.160" Od. 7 Degree 8mm Chromoly Steel Valve Spring Retainers [LS Dual] This is our most popularSpeedmaster chromoly steel retainers are made from 4140 chromoly and then heat treated for long life. These retainers are available in a variety of lock angles and sizes to suit your needs, from performance street to competition use.