The Outlaw uses a 44-amp MSD Magneto ignition system for spark and the alky is pumped to the injector with a 20-gallon-per-hour Sid Waterman fuel pump.
Leverentz told us that one issue that you have to be especially careful with one of these types of engines is the oiling system. “It has to be a dry-sump system and the oil pump has to be the best you can buy. Oiling on this engine is critical.”
Because these engines are designed to turn up to 9500-9600 rpm, Leverentz recommends replacing the rods every 20-25 passes if you race the eighth mile; if you are a quarter-mile racer, then every 16 passes.
The main speed secret for the Outlaw Hemi is what’s up top: a PSI screw supercharger. This engine has a PSI “C” Compressor that is only overdriven either 96 percent or 115 percent. In some applications these blowers are routinely turned over 150 percent over crankshaft speed, so there is potential for making more power with this combination.
“These blowers make so much more power than a conventional blower that we don’t recommend our customers to overdrive them any more than those two numbers because most racers are having problems just controlling the power the engine makes at that percentage of overdrive,” Leverentz said. As for a fuel injector, this engine has what is known as a deep-throat injector.
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This engine made 2917 hp at 7,000 rpm and 2915 at 7500 rpm and over 2000 lbs of torque. Leverentz added, “We think the engine will make about 3300 hp at 9600 rpm but our dyno won’t hold that kind of power. One of the great advantages we have seen with the screw blower is that the engine tends to make and hold more torque through the entire RPM range than the roots blowers do.”
The only disadvantages to these engines are that the screw blower is heavier than a roots by about 40 lbs., according to Leverentz, and that one of these engines, complete pan to injector, ready to bolt in and fire, will set you back about $85,000.
But as Leverentz said as he was ushering us out of the dyno room, “This engine doesn’t have a real weak spot and besides, if you are a really serious racer and you can have one, why wouldn’t you have it?”
If you are an Outlaw Pro Mod racer you probably will have to have one, or you’ll get beaten by the racer that does.