Camaro XV

[Stielow]

Originally Posted by mikels

While the Mule is certainly capable of making more power than Mayhem, I don't believe it has ever been run in 'track duty' at a power level higher than Mayhem due to the very thing we were talking about previously - powertrain cooling.

Dave

Yes the Mule made more dyno power. I did drive it at Thunderhill at 8 psi boost and it ran great until the oil temperature was too high. We never ran it at full boost on track. Even with very well sized turbos the turbo lag and power boost is harder to drive off the corners than the 427 SC engines. I think the installed power of Mayhem is on pair with where the Mule is on pump fuel. But, the 427 SC LS engines that Dave has tuned have great driveablty. They are like big electric DC motor. Demand torque and get torque. The engine calibration is dead on, no holes or sags. The Mule had an old FAST EFI system on it off memory and had a good cal but not a refined as the LS stuff.

I love the big inch blown LS9 based engine. I finally have great street drivabilty that makes stupid power. Both Red Devil and Mayhem’s engine idle below 800 rpm and have OEM drivability. I also love the fact I can beat them hard on the track with no issues if you can keep them cool and fed with fuel.
Mayhem makes more power more efficiently than Red Devil due to better management of air through the engine. We made more power with less boost. By working the blower less hard it makes less heat and takes less power to turn. We are now running it at a more efficient point on the compressor map. Huh… Engineering…

Mark