When we’re at a tradeshow, there are always a few things that stand out from the crowd. It could be an innovative product, a new company, or a vehicle that was just unveiled. At the 2021 PRI Show, one car that certainly got our attention and attendees was Vengeance Racing’s (VR) C6 Z06 Corvette, known as the Fatman 3.0. Now, we’ve done a couple of stories on this car as VR has gone through the build stages, and while we’ve seen pictures, this was our first time seeing the Corvette in person, and it’s incredible.
Vengeance Racing has made some changes to the Fatman 3.0 since our last article. We spoke with Ron Mowen, Vengeance Racing owner and Fatman driver, to get all details on this killer machine. Mowen said, “We’ve made several changes to the car since the last time you guys (LSX Magazine) covered the build. When you last saw it, the car was just out of the chassis shop with a mockup block and the turbos hanging off the nose. We had put the turbos there initially, but didn’t like how it looked with the exhaust having to go up and over, so we redid everything.”
For the final assembly, the mockup block was removed and replaced with a Late Model Engine (LME) powerplant, consisting of a Noonan billet block, heads, intake manifold, and of course, all of the “right” internal parts to make some massive power. For this go-around, Mowen decided on a pair of Precision Turbo XPR91s for the turbos for this monster which should put it in the power numbers in the 3,500 horsepower range. A Holley Dominator ECU will control the engine functions and allow for all the tunability Mowen and his team needs for this monster of an LS.
The Fatman 3.0 is very close to completion, and Mowen expects to hit the dyno soon. “All that’s left is to make a windshield support, throttle cable bracket, put it on the hub dyno, and get ready for testing next week,” Mowen explained. He also said the car would be race-ready in January 2022.
Mowen wants to accomplish some personal pursuits with the Corvette and didn’t build it for any particular class of racing. “My goals for the car are a three-second 1/8-mile, five-second 1/4-mile, and run over 250 mph in the 1/2-mile, in that order,” Mowen explained. And even though VR didn’t build the car for a particular class, we can expect to see him at Lights Out and also participating in either the Pro 275 or Radial Vs. The World class. “I don’t expect to be competitive in these classes because I won’t have spare engines or transmissions,” Mowen said.
While this car may look like a well-thought-out plan from day one, Mowen told us that was not always the case. He said, “We built it by mistake and never intended for it to go this far. The main goal was to have a clean-looking car and show off what we can do as a company. That is one reason we kept it a small-block LS. I could have easily used the money invested and installed a 481X big-block instead, but I wanted to stay true to what Vengeance is and what our customers can relate to.”
While VR might have taken this build a little further than they once planned, make no mistake that the Fatman 3.0 is one baaaad machine. This car showcases the talents and vision of the Vengeance Racing team, making it a true standout at this year’s PRI show.