1.370" Od. 1.060" Id. 7 Deg 11/32 Chromoly Steel Valve Spring Retainers OLDSMOB. they come in three different

they come in three different finishes and feature a billet aluminum oil fill cap

and 3/8 in

The Speedmaster design incorporates open-fin spacing that promotes airflow through the radiator to enhance the cooling and help eliminate clogging

and have a maximum pressure of 7 psi with an externally accessible pressure relief valve

These MidAir Series Manifolds includes a 4150 Series 1200 CFM Billet Throttle Body

1.370" Od. 1.060" Id. 7 Deg 11/32 Chromoly Steel Valve Spring Retainers OLDSMOB. they come in three differentSpeedmaster 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.