At 47 seconds that Dodge WJA is in excellent condition. Years ago We had WJA55 with a 412 Ci Industrial Chrysler Flathead six, Twin Manifolds Carbs 2 boxes , Dump bed , original built for mine pit duty. Polished Stainless Cross DODGE emblem and the flying hood ram too. Very cool truck. I gotta watch it again
I think they do that because they are adjusting the weight of the sled to the proper weight to use for the class. The first truck is usually what they call a sled test pull.