’08-10 6.4L POWER STROKE

Diesel World - - Buyer's Guide -

MAX HORSEPOWER: 550-590 HP TUN­ING: SCT OR MCC

Al­though the ’15-and-newer 6.7L Power Stroke is nip­ping at its heels, the 6.4L Power Stroke is still the king of tune-only horsepower. Compound tur­bos, a high-flow­ing K16 in­jec­tion pump, piezo­elec­tric in­jec­tors and a strong fac­tory lift pump all play into this en­gine’s vast per­for­mance po­ten­tial. This is the only Power Stroke that can double its power out­put with noth­ing more than a cus­tom tune (280-290 hp stock, 550-590 hp tuned). Over the years, we’ve come across sev­eral cus­tom-tuned 6.4L trucks that’ve dyno’d 550 hp but achieved trap speeds in­dica­tive of 580 to 590 hp while at the track.

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