If you already own a late-model Cadillac CTS-V and are looking to stick it to the new LT4-powered 2017 CTS-V riding on the nimble Alpha platform, then you might want to check out what the fellas at DeatschWerks (DW) have done to bring this second-gen CTS-V up to snuff.
DW fit the CTS-V with an even larger cam than they had run previously, 90-lb. injectors, their own CTS-V fuel pump kit, and ported the blower along with the heads. Pause the video at 0:10 to see the full list of modifications.
Running on E85 the DW CTS-V made 749 horsepower at the wheels. Which is, you know, a sane level.
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Sounds sexy!