FLATBED REFRESH
Diesel World|September 2020
FLATBED REFRESH
POWER UPGRADES FOR 12-VALVE CUMMINS
JACOB WHITE

There is no denying just how impressive today's new trucks are, they’re comfortable to drive, they’re quiet and they make ridiculous power for ‘off the showroom floor’ vehicles. While anyone can appreciate all the amenities found in today's $70,000 trucks, not everyone will appreciate that monthly payment. With that said, it seems more an more guys are willing to put up with a little steering wheel slop, a CD player that hasn’t worked for ten years, and a little engine noise from a pre-high pressure fuel-injected diesel. Take this old flatbed for example, while the owner has a 2019 Ram Mega Cab sitting in the garage more than capable of doing everything he’d ever want from a truck, he still finds need for this 280,000 mile 12-valve Cummins on a weekly basis. That fully loaded 6.7L Cummins Laramie is an impressive truck tows like a dream, but when it comes to weekend work, a pair of muddy boots and dirty clothes leads to the old flatbed where their will always be a soft spot in a blue-collar guys heart.

More and more truck owners are hanging on to their old trucks and getting more use out of them by reinvesting in some repairs and upgrades like never before. While it may not be as comfortable or as quite to drive, the 1994-1998 12-valve Cummins will always be a workhorse when properly taken care of. Used for odd jobs on the weekends, from landscaping to hauling cattle, this old truck still gets to see its fair share of heavy loads. The engine is getting up there in mileage, but after a complete reseal to eliminate some pesky oil leaks, some timing adjustments and P7100 injection pump upgrades it was producing a very usable 300hp. Being spoiled by that 400hp/1000tq 6.7L Cummins in his 2019 though, the old 12-valve needed a little more, some fueling and air upgrades were in order to pump up this 5.9L to keep up with today's latest rigs.

FUEL INJECTORS

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September 2020