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Due to the large-diameter 13 in
They do this using a unique design in which cooling tubes draw cool air through the transmission fluid
Like all Speedmaster cylinder heads
The Speedmaster GM LS1/LS2/LS6 Modular Hi-Ram Intake Manifold is introduced as a cost effective alternative to fabricated sheet-metal for high-performance applications where induction system height is not limited
and all accessory gaskets--everything for a complete engine rebuild
1.500" Od. 1.120" Id. 10 Degree 11/32 Chromoly Steel Valve Spring Retainers Due to the large-diameter 13Speedmaster 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.
