Inside The No. 1 Qualifier
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The exhaust ports of the Tiger heads are round like those of the Ram Air II and IV, and the 455 H.O. and SD engines. But these ports are considerably larger at 1.875 inches diameter versus the R/A IV 1.800 inches, and they are raised to complement the flow of the intake side. Kaase left well enough alone here, stating that this setup made good power at low rpm. View Related Article
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