Horsepower and torque are what seem to make this incredible industry move. If we didn’t have the ability to twist driveshafts at will, burn the rubber off the tires or pin your passenger to the back of the seat, it just wouldn’t be fun.
At a recent dyno event by Truck Source Diesel (TSD), Randy Strey rolled up in his 2006 Dodge. If you don’t know Strey, then you haven’t been watching the dyno circuit in Texas. Strey has been laying down some serious horsepower and he certainly lived up to his reputation.
He ended up making three pulls on the dyno and the tires were spinning on all three pulls. By the last pull, he had a total of 9 guys in the back of the truck (well over 1800lbs) and the truck was still spinning. Even so, the final dyno number was 1150 horsepower and he maxed the dyno’s torque at 2000 ft-lbs. According to Strey, he still needs some tuning done to really get her dialed in.
So, what does he have under the hood of the beast to roll that type of number?
1,000 plus horsepower requires a strong bottom end. So, Strey opted for a set of 12 valve forged rods instead of using the common rail cracked cap rods. The rods were then sent out to be shot peened. A set of Mahle Motorsports chamfered and coated pistons that are 0.020” over are mated to the rods on one end. The other end is connected to a factory crank which was balanced by Kotzur Racing Heads (all machining was done by them as well). With the rotating assembly balanced it was installed and an Industrial Injection 14mm Gorilla Girdle was added to help hold everything in place. For the actual engine assembly, Strey worked with Holden Bros Diesel to get it done.
The heartbeat of the engine is the Hamilton Cams 180/220 HD camshaft. With as much boost as Strey runs, he had to upgrade his pushrods to Hamilton’s Extreme Duty and upgrade to their 110lb valve springs. On top of the engine, is the factory head that was ported and polished by Kotzur. Holding the head in place is a set of ARP’s 625 head studs.
For air, Strey is running a BorgWarner S400 with a 65mm compressor wheel that is being feed by another S400 with a billet 83mm compressor wheel. The compound kit was fabricated by the guys at Elite Performance and Fabrication. To help tune the system, a 44mm Tial Sport wastegate was installed between the Performance Diesel Inc. (PDI) 24V T4 exhaust manifold and the HP turbo. Believe it or not, all of that air blows through the factory intercooler and is met with nitrous coming from a single stage Nitrous Express kit before entering into the cylinders.
Fuel is injected with a set of F1 Diesel Flux 6s injectors that are supplied by a twin CP3 system. The factory Cummins injection pump has been replaced by a 120 percent over pump and it is paired with a 33 percent over LBZ pump. The fuel is feed into the CP3’s by a FASS 260 which pulls the fuel through a Truck Source Diesel fuel tank sump.
Maxing out a 2,000 ft-lb dyno isn’t easy but transferring that much power back to the rear wheels REALLY isn’t that easy. So, Strey went to the guys at Patriot Transmission and had them build his tranny with Goerend Transmission parts. Since Strey still uses his truck to drive around town, he opted for a 2200 stall 17 blade left cut converter from Goerend, also.
Now, controlling the entire package is handled by custom EFILive tuning done by Truck Source Diesel (TSD). The amazing part of this whole package is the fact that Strey runs around town and uses the truck daily with the big dyno tune. “It seems to get the best mileage, is low smoke, and has great performance,” Strey says.
“I just wanted to give a big Thank You to the guys at Truck Source Diesel, Patriot Transmission and Elite performance and Fabrication for all of their help,” continued Strey.