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Message: <blockquote data-quote="f8." data-source="post: 113042" data-attributes="member: 923">330ii? twin rail of 12 injectors in total? wow!actually, is it hard to find a manual tranny for the m52b25? and are the bell housings similar whether its an m50/52/54?i know this is a supercharging thread and i know you've decided and paid dear money supergripen but its interesting to read that the sc severly limited top speed in adliz's case.why was this so?i know the sc presents a large drag to the engine particularly at high revs, read somewhere that the jaguar xjs with its supercharged v8 actually makes 470hp or so at the crank but the sc takes up to 70hp at that peak hp rpm to result in max power for that engine being 400hp.maybe underdriving the sc has additional gains at red line apart from just saving your torque converter. for one the centrifugal compressor if it was sized for good mid end punch will struggle to provide enough air at the highest rpm since boost cannot be kept constant.</blockquote>