I have a few issues with your post. 1) the 403 Olds was a webbed main motor. Why would you drag race this motor? Even if you capped the mains, its still a very weak low end. 2) Why put a 455 into a beemer? Sounds odd. Im personally surprised it even fits. 3)If your looking for T-charged info, search the posts. There are a few people who run SCv6 buicks.