BY MIKE MCGLOTHLIN
What do you do when you’ve already outfitted your ‘19 F-450 with 22.5- inch ‘Forces, a massive in-bed fuel tank, and a host of One Up Offroad suspension parts? You add more giddy-up to the equation, of course! When John Wellenkamp’s 1,400-mile Super Duty rolled into Flynn’s Shop in Alexander, Illinois, the bed was full of cutting-edge go-fast parts, all designed to get his hefty tow-rig up and moving a bit easier.
Among the components installed during the three-day project was a 66 mm MP Series turbo from Midwest Diesel and Auto, along with one of the company’s high-flow intake kits. For fuel, a 10.3 mm stroker CP4.2 from RCD Performance and FASS’s new 220-gph Titanium Series supply system made the cut. Then, to harness all the newfound power and ensure the truck never skips a beat with 650-rwhp and 1,300 lb-ft on tap, a Competition 6R140 transmission from Midwest Diesel and Auto was bolted in place of the stocker.
If you’re looking for the ultimate all-around 6.7L Power Stroke parts recipe, this is it. The factory power rating was essentially doubled without sacrificing any drivability or reliability. What’s more is that the upgrades shown here illustrate just how easy it is to squeeze big power out of a late-model 6.7L Ford without even removing a valve cover.
Tearing into the near-new 6.7L Power Stroke, everything came apart easily for Jake Bosie, the lead technician at Flynn’s Shop in Alexander, Illinois. While Bosie removed the factory air intake, intercooler pipes, and upper and lower intake plenums, the antifreeze in the primary cooling system was allowed to drain.
Midwest Diesel and Auto’s MP6668-10, the largest VGT the company makes for the 6.7L Power Stroke, was selected to replace the stock Garrett GT37. In this side-by-side comparison you can see just how extensively the factory-based compressor housing is modified. In addition to being machined to accept a larger, 66 mm wheel (the stock wheel measures 61 mm), a map-width enhancement groove is also added. Like all Midwest chargers, this one shipped pre-installed on a brand-new Ford pedestal.