This is the place to ask questions about your engine components like cams, valves, pistons… just anything that is generally "engine" specific. This also includes questions about exhaust systems such as exhaust manifolds, piping size, mufflers, ect...
for the magnum manifold, which switch does NOT need the tach adapter? i've searched on here and read everything...some said the harlan needs it and some said the msd needs it.. so which one is it?