GM 350 Crate Engine Build VI - The Goodwrench Quest, Part VI
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Virtually all small-block Chevys operate with an exhaust-to-intake flow relationship that’s around 70 to 80 percent. The TFS heads measure a 73 percent flow at 0.400-inch valve lift. This means they can benefit from the dual-pattern camshaft. If the percentage were higher, a single-pattern cam would work better. View Related Article
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