I get you. The 2.94 gears with a standard 31 inch truck tire will make the truck a little lazy off the line. The less torque the engine has, the more stall it needs. A slant six will need more stall speed in a truck than a 440. Another guideline: Lower gears( 3,91, 4.10 ) can get by with higher stall since they get the engine up to speed quicker. A tall tire, tall gears and high stall speed will create much more heat in the transmission and make your truck a real slug out of the hole.