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By using an aggressive lobe profile
manual or EFI pump
or larger wheels to clear them
They start to make awesome power around 3
1.500" Od. 1.120" Id. 10 Degree 11/32 Chromoly Steel Valve Spring Retainers By using an aggressive lobeSpeedmaster 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.
US$ 187.50
US$ 85.00
US$ 297.50
US$ 267.50
US$ 192.50
US$ 272.50
US$ 397.50
US$ 90.00
