5.4 cummins conversion
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Joined: Mar 2007
Posts: 10,101
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From: Pa
Regear the truck to at least 4.56s, add a tuner with a custom tune and go from there. Still not enough power? Get your hands on a used intercooled supercharger setup off a lightning and get the truck tuned for it. Running 4 or 5 lbs of boost will give you a very noticeable increase in power and not stress the stock bottom end too much. Or pick up a good used PI 6.8l with harness and pcm and put it in your truck. Swapping a 5.9l into your current truck will be a lot more work than you think.
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Junior User
Joined: Dec 2011
Posts: 64
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Regear the truck to at least 4.56s, add a tuner with a custom tune and go from there. Still not enough power? Get your hands on a used intercooled supercharger setup off a lightning and get the truck tuned for it. Running 4 or 5 lbs of boost will give you a very noticeable increase in power and not stress the stock bottom end too much. Or pick up a good used PI 6.8l with harness and pcm and put it in your truck.
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