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VALVE LIFT
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DURATION
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DURATION @ 0.050"
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GRIND NUMBER
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REGRIND
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HARD WELD
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NEW BILLET
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1183
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Web Camshafts will restore your cam back to factory specifications.
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312
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Bolt in performance cam for mild track.
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312a
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Strong mid and upper end performance for mild track. Requires Exhaust System, High Compression Piston, and Performance Valve Spring Kit.
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86c/312c
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High lift cam originally designed for the Combat Commando. Requires Exhaust System, High Compression Piston, and Performance Valve Spring Kit. Check ALL clearances!
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Part Type
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PART #
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$155.00
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Kit includes performance dual springs and Aluminum retainers (7075-T6 HA). OK to .500" valve lift. Price Per Set (4).
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PDF
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Congratulations
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LINK
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Degreeing In Your Camshaft
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PDF
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JPG
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General Valve Spring Information
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PDF
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JPG
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Valve Spring Installed Height Information
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LINK
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Web Cam Full Catalog
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PDF
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Norton 850 Twin 4v Parts List.
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Home | Norton 850 Twin 4v | Updated: March 13 2025
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