Doug Noelke's BigDawg Monster truck in action. Doug started racing a monster truck in the summer of 2000 after several years of mud racing locally with a Ford truck. The engine in the BigDawg truck is a 572 cubic inch blown alcohol engine which makes around 1200Hp. It takes a ton of torque and Hp to move a monster truck so blown alcohol is the only way to go. The rules of the PRO/MT racing organization limit monster truck engines to 572 cubic inches an 8:71 supercharger 10% over driven and alcohol as fuel, no nitro.
Tony Blue ran this street stock car for several years at Montgomery County Speedway. The engine package was actually built for the rules package at another track, but he started running at Montgomery County. He liked the track so much, he started running the track very often. The engine package consisted of a 355Chevy built with flat top 4 valve relief pistons, a stock Chevy crankshaft, unported Vortec cylinder heads, a flat tappet camshaft, stock rockers and non airgap style intake topped with a Competition Carburetion prepared Holley 4412. He also ran an iron flywheel and a full size clutch as required by the rules.
Another one of my short track racers Gary Zenhle races at Tri City Speedway in Granite City IL. At that track they have a very good class of limited late models which use two barrel carbs as a restriction. They have very well defined rules as do most circle track racing classes. They have to use 358 max cubic inches, cast iron heads, Holley 500cfm two barrel and flat tappet cam. They are allowed to run any compression ratio, crank and steel rods that they want to but the block has to be production based.
Here is a picture of Jerry Bosson's race car running at Lebanon Speedway in Lebanon MO. He runs on asphalt in the modified class and it's very, very competitive. They are limited to a 350cfm Holley carb on an Edelbrock 2101 Performer intake manifold. They also have to use production or Bow Tie cast iron cylinder heads, 11:1 max compression,355 cubic inches and a spec tire. This is the toughest engine combination to build competitvely or so it seems. The small carb size makes getting horsepower improvements very difficult and they come only after much dyno testing and development time. When you visit the track it is always amazing to see how fast these guys go, especially when you consider how much is being done to slow them down!!
