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Lunati Beehive Springs

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With no machining required, the Lunati beehive springs (PN 74818) install at a 1.750-inch height with Lunati retainers (PN 75787LUN) and stock 7-degree keepers to deliver a big 155lbs of pressure on the seat and 330lbs when open. It's a lot of spring pressure and right on the ragged edge of what you'd want to run with a flat-tappet camshaft, but it proved necessary with the incredibly aggressive ramp rates of the Voodoo's lobe profile and the heavier Voodoo aluminum roller rockers.