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Originally Posted by ktulu
I believe it is a new design. The current 4.8 is based off of the 4.4, just bored and stroked,so I understand.
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I don't think the current 4.8 is based off the 4.4. The current 4.8 engine was designed by Alpina from their B10 V8S engine. The blue prints were handed out to BMW for mass production.