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The Summit Vortec heads can handle .520 lift right out of the box.
The 7516 Edelbrock manifold will fit the Vortec heads. The 2601 is for the stock heads.
Quote from: rich weyand on August 26, 2013, 02:57:57 AMThe 7516 Edelbrock manifold will fit the Vortec heads. The 2601 is for the stock heads.OK, I thought you said staty away from "RPM" (7516) in another post.
Rich, Does this Cam seem more appropriate then? http://www.summitracing.com/parts/isk-cl201264/overview/make/chevrolet