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This COMP Cams camshaft is intended for BBC installations but will not fit 1965–66 396 ci models that use an oiling groove in the rear journal; consult support if that applies. It’s described as suitable for inboard/outboard pleasure boats and maintains a good idle, offering a balance between usable drivability and mild performance for marine applications where a smoother idle is preferred.
COMP Cams Camshaft CB XM 270HR-12
