One of the most popular tractor classes in the eastern United States is the combined division for Limited Pro Stock and Super Farm Tractors. This group of tractors closely resembles the normal Pro Stock Tractors. The primary difference is that the Limited Pro Stock class is ‘limited' to a 540 cubic inch engine and is required to use a much smaller fuel pump for competition.   The Super Farm Tractors may run up to 640 cubic inches but that class is limited to a much smaller turbo-charger.

The other noticeable difference with this class when compared to their ‘big brothers’ in pulling is the great variety of manufacturers and thus a great diversity of ‘color' in the class. Ford, New Holland, International, Case, John Deere, Oliver and Duetz are all seen in this class.  The division is sanctioned through USA-EAST Sled Pulling, Inc.

The Limited Pro Stock/Super Farm class is sometimes seen along with the Interstate Pullers Association but is called ‘Mod Turbo' in the eastern part of Pennsylvania as well as Virginia and Maryland . The rules for the Limited Pro Stock division and those of the Interstate Pullers are quite similar allowing tractors to move back and forth between the two divisions. The annual pull at the Bedford County Fair in Bedford, Pennsylvania is an opportunity for both the USA-EAST and Interstate pullers compete in the same class at the same pull.  This class of ‘smokers' is promoted regionally by Full Pull Productions, Inc.

 
For the second time in the past five years the Bell Farms Pulling Team from Mount Pleasant, Pennsylvania captured the USA-EAST championship with their super farm tractor named “Fire Fox”.  Originally built by Bullet Motorsports, the “FireFox” was driven this summer by Mark Bell to its championship position.  “Fire Fox” is a John Deere 7800 with a big block Deere engine for power.  Nathan Graham from Greensburg, PA – the winner a year ago – was the runner-up in 2011 with “Blue Reaper”.