Reply to "Holley Mechanical Fuel Pump Install"

bosswrenchMember

FWIW, there are two different fuel pump eccentrics: the early one is concentric two-piece stamped steel while the later one is a one-piece hardened steel unit. The type of eccentric you have dictates the double-row cam chain you'll need if you decide to change things around. I read the stroke generated at the pump by the two eccentrics may be slightly different too, but haven't verified this.

11/1/1012:34 AM

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