Quick­est 7.3L Through the ’660

Diesel World - - News -

It was a big week for Power Strokes, and es­pe­cially the 7.3L. After cut­ting the frame rails off this OBS Ford and drop­ping its race day weight to 3,625 pounds, the ni­troushuff­ing 7.3L put to­gether by Gray’s Diesel Per­for­mance of Mid­dle­burg, Florida, went 5.21 at 137 mph through the eighth-mile over the week­end—mak­ing it the quick­est 7.3L-pow­ered truck (or rail) to do so to date. The en­gine still makes use of the HEUI in­jec­tion sys­tem and is graced with P.I.S. 400/400 in­jec­tors, a BTS dual HPOP sys­tem, an S480 turbo, and is backed by a Pro­for­mance Rac­ing Trans­mis­sions Turbo 400.

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