what decides how how many engines you can have is weight class or rules in the class. The unlimited class has no limit except for the weight limit for the class. so if a team could get 8 in the tractor and still make weight one would do it.
I am curious, where does it say that? Page 43, V. MODIFIED TRACTORS, C. Grand National/Supernational-Unlimited Modifed, 1. Vehicles that compete at this level may be any combination of engine(s), transmission(s), and final drive they can run in their weight division. 2. The Unlimited classes will weigh 6000 lb. and 8000 lb. and will allow any combination of engine(s), transmission(s), and final drive, and will only be offered on the Grand national/Super National (GN/SN) circuit. 3. ... 4. ... Of course, this changes with the 6000 pound Unlimited class in 2014.
JW
