Charley will no doubt whip me like a small child -- but if I remember correctly -- the Mule was not a TT build when Mark did the car... it was an 8 stack injected small block... and CHARLEY converted it to the TT configuration that I think made 1041 HP....

I think you are right Greg.

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

Yes I'll sell anything including the Mule. You will even get cases of Stielow books. I'll even make him autograph them . The Mule was built with 8 stack Kinsler injection but was supposed to be a twin turbo while mark still owned it. The problem was the Turbo engine builder was so slow Mark ended up selling me the car before he got the engine. When he finally got the engine it went in Malitude. Then under Jody's ownership Malitude got a better twin turbo engine. The Mule still has the Kinsler intake on it under all that hand fabbed aluminum.

The Mule runs like a freight train also. If I took what I have learned over the last 5 - 7 years and tuned on the Mule it would be faster yet. Still a great iconic car. At the time I did the Mule I did not size the oil cooler big enough.

Mark

What a great discussion!


Let's face it -- it's just hard to beat great engineering!

http://camcojb.com/temp/thunderhill%20006r.jpg



http://camcojb.com/temp/thunderhill%20011r.jpg

That's Jody in a the passenger seat....:thumbsup:

Fun day beating on Charley's junk. :unibrow:

Mark

Mark,

whats the difference in oil cooler sizes between the Mule and Mayhem vs XV, is it a difference in line size or cooler size, thanks