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home made sts-v

  1. Northstar Engines and System Technical Discussion
    I was looking at what I would need to do if I wanted to try to supercharge my 4.6 L Northstar in a 2007 STS. I don’t really know the power capabilities and couldn’t find it out online of what these engines are rated for. I also don’t know what changes they did from the 4.4 L true STSV compared...