Reply To: 1955 Johnson 5.5

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June 6, 2021 at 5:38 pm #239615
need2fish
Participant

    Some mag cams are adjustable. There are 3 machine screws holding the cam to the mag plate — some cams have oblong holes for those machine screws — moving the cam away from the plate will engage the throttle sooner and have it open wider.

    Make sure there isn’t a deep groove cut in the cam follower.