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Do these trucks have the potential to make more power than a 454?
YES.........BUT the longevity of them even in stock form is questionable.

I had a modded 95' 6.5TD suburban that ran great between rebuilds due to Blown headgaskets(3), Pitched rod(1), failed turbo(1), and a failed injection pump(1).

Not too big of a 6.5L TD fan here, I don't mean to sound negative, that's just my experience with that motor....
Several other friends locally have had tremendous reliability problems with them as well, so I'm not alone.

Be careful and maybe keep a good luck charm on the dash! :drink

Catch you later,

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