Jeff and Keating also found that the freeze plugs were blowing out due to high boost pressures, so a custom set of plugs were whipped up by Keating. Jeff tinkered with hisown injection pump to get plenty of fuel, and he runs a big Aeromotive lift pump at 50 psi to supply the injection pump with plenty of Number 2 diesel. The injectors went through a lot of trial and error before they finally settled upon a custom set made by Keating, which didn't smoke too badly on the street, yet provided plenty of power at the track.
The induction is where things get wild. Jeff wanted his EGTs to be as low as possible (after blowing his first motor), so he went with a twin turbo, intercooled, water-injected, and nitrous oxide-assisted setup. The compound turbos are hybrids built by Keating, with the primary being an H2E/HX50 and the big turbo a highly modified HT4C. The turbo setup, combined with an external wastegate, provides up to 100 psi of boost to the engine. Jeff had an intercooler custom built that was so large he had to change over to a Griffin radiator to get it to fit. He and Keating also designed a water-injection system to keep things cool.
If that weren't enough, a two-stage NOS nitrous system with a progressive controller is used once the truck starts to hook. The truck has never been on a dyno, but based on the truck's weight and near-140mph trap speeds (its best is 139.5 mph), it's calculated to make about 1,200-1,400 horsepower at the flywheel. At the track, Jeff shifts at about 4,000 rpm (or about when the factory tach is pointed straight down) and never sees more than 1,300 degrees while going through the traps. He's never blown a head gasket with his current setup, and the truck has seen more than 10,000 street miles with the new engine.
The heart of the white and red monster. Although Jeff's truck has never been on a dyno, horsepower is estimated to be at least 1,200 at the flywheel based on the truck's weight and trap speed. Keating Machine helped Jeff with a turbo combination (left) that would spool quick, yet provide tons of boost. "I see almost 100 psi on the street," Jeff says. | 
As if all the water weren't enough, Jeff also has a two stage nitrous system that he uses at the track. He actually backs the boost down to about 80 psi to be easier on the turbos and lets the nitrous take up the slack. | 
A simple 5-inch exhaust stack gets the job done, and the tank of the driver side is for the water-injection system. Even with the cage, the tank, and the stack, Jeff still has plenty of room left if he ever needs to haul anything. |