hi i am a 98 blazer i have put on a class 3 trailer hitch how much wieght can i pull without harming my truck thanks a also put in a 2 in add a leaf and torsioned my front 1 1/2 inches

 

It depends on vehicle. Our 97 Blazer 4dr, 4x4, 3:73 gears, can pull up to 5000# max. But different gear ratios, 2 or 4 wheel drive 2dr vs 4dr are all different. The info is in the owners manual.
One thing I can tell you you need to add a B&M SuperCooler for the trans or you risk burning it up as I did. I suggest the B&M because they make a small but very good cooler that fits perfect in the Blazers. I also have one in our Jeep 5.9 Limited. They are like $49 from Summitracing.com.