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  • Diesel Power Challenge 2016 - Ray McClelland

Diesel Power Challenge 2016 - Ray McClelland

’07 Dodge Ram 2500, 6.2L Cummins

John Lehenbauer
Jul 2, 2016
Photographers: Anthony Soos
Ray McClelland has never been able to leave his ’07 Dodge Ram 2500 alone. After buying the truck with less than 1,000 miles on it, he had the engine tuned for more power. The modifications haven’t stopped since that first tuning session, and the engine’s horsepower output is now triple its original amount.
When Ray originally bought the Dodge, he never thought it would have or need the power the engine puts out today. Following different trends and styles in the industry through the years, the Ram has seen a number of different powertrain and suspension configurations. This trial and error has led to a setup that allows Ray to compete in local drag race, dyno, and sled pulling events.
Photo 2/15   |   002 Ray McClelland 2007 Dodge Ram 2500
Since Ray wanted more power, the original 5.9L Cummins engine was taken to Kingspeed Race & Repair where it was punched out to 6.2L, and then a compound-turbocharger setup (featuring 94mm and 72mm units) was added to feed the beast with boost. Getting all the fuel needed to supply the engine is done with Exergy 300-percent-over injectors and twin 12mm CP3 pumps. Tuning the engine is done with an EFILive unit prepared by FTK Diesel & Performance. An ATS Diesel Performance intake horn feeds into a Kingspeed intake manifold. The spent gases exit through a 5-inch exhaust pipe to a 6-inch bed stack.
In order to support the power and increase the truck’s performance for competition, the original six-speed manual transmission was replaced with a Firepunk Diesel Comp 3 48RE five-speed automatic. The manual-to-automatic conversion was done using factory Mopar parts.
Photo 3/15   |   013 Ray McClelland 2007 Dodge Ram 2500
Getting the power to the ground requires having the proper suspension and axle arrangement. To achieve the best traction possible, Ray had the truck lowered back down to stock height, then he installed BD Diesel Performance control arms, a track bar, and sway bar end links along with Fox Shox dampers. A Detroit Truetrac differential and Mag-Hytec cover are the only mods that were done to the rearend.
Ray says he is not only excited but also thankful for making it into his “Super Bowl” of diesel events, Diesel Power Challenge, and adds, “I will do my best to make the truck demonstrate how well it can take on any task that’s thrown at it!”
Photo 4/15   |   014 Ray McClelland 2007 Dodge Ram 2500
Build Sheet
Name: Ray McClelland
City: New Castle, Pennsylvania
Vehicle: ’07 Dodge Ram 2500
Driver Experience: Dyno, drag race, tow
Engine: 6.2L Cummins I-6 by Kingspeed Race & Repair
Turbo(s): Comp Turbo Technology 72mm and 94mm triple-ceramic ball bearing
Fuel: Exergy Performance 400-percent-over injectors with ATS Diesel Performance twin 12mm CP3 injection pumps
Electronics: EFILive with tuning by FTK Diesel & Performance
Injectables: None
Intake/Exhaust: ATS Diesel Performance intake horn, Kingspeed Race & Repair intake manifold, Mishimoto intercooler, Steed Speed exhaust manifold, and custom 5-inch exhaust with 6-inch stack
Transmission: Comp 3 48RE five-speed automatic by Firepunk Diesel with Diesel Performance Converters quad-disc torque converter
Suspension: Stock height, Fox Shox shock absorbers, tubular traction bar with heavy-duty polyurethane bushings, BD Diesel Performance track bar, sway bar end links, and control arms
Tires/Wheels: LT305/45R22 Nitto Terra Grappler G2 with 22-inch Hostile Wheels Sprocket
Differentials: Detroit Truetrac (front, rear) with a Mag-Hytec cover (rear)
The big 6.2L Cummins in Ray McClelland’s ’07 Dodge Ram 2500 is Mishimoto-intercooled and force-fed air by a compounded pair of Comp Turbo Technology turbochargers: one 72mm piece and a big, 94mm unit. A pair of ATS Diesel Performance CP3 injection pumps feeds fuel to the beast’s Exergy Performance 400-percent-over injectors.
Photo 7/15   |   005 Ray McClelland 2007 Dodge Ram 2500
The Optima battery gets the engine cranking, while an ATS Diesel Performance intake horn routes air into a Kingspeed Race & Repair intake manifold.
Photo 8/15   |   006 Ray McClelland 2007 Dodge Ram 2500
The polished Hostile Wheels are wrapped with LT305/45R22 Nitto Terra Grappler tires.
Photo 9/15   |   007 Ray McClelland 2007 Dodge Ram 2500
Fox shocks are held in place with a low-profile shock tower for more clearance.
Photo 10/15   |   008 Ray McClelland 2007 Dodge Ram 2500
Two Fox Shox shock absorbers keep the rear axle under control. A Mag-Hytec differential cover increases lubricant capacity and provides better cooling. Along with the oil increase, the cover features a magnetic drain plug to separate metal particles from the fluid.
Adjustable tubular traction bars keep the rear axle in place during acceleration
The interior remains mostly stock except for added safety equipment. A roll bar with side-impact bars, sport seats, and four-point harnesses are there to protect the driver during competition.
Photo 15/15   |   015 Ray McClelland 2007 Dodge Ram 2500
This 6-inch bed stack expels exhaust up and away from the Dodge Ram 2500.

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