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Simp, I'm not sure I understand why you say he wouldn't have enough power to spin those tires. Isn't the extreme gearing ratio in the 20 ton Clark axles + his custom transfer case multiplying his torque immensely? Also, I just explained the math on how to get to 35k, and that is before he adds...

When we pulled against each other, he was connected to the strap on his rear axle. This resulted in the strap being level. Great idea on the sand. I was thinking about making molds to make concrete blocks, and then loading them up with the tractor just before going.

Based on how easily I was pulled, I believe the weight. My gut tells me those 35.5 tractor tires were filled with liquid ballast. If the tires were filled with water (not a heavier ballast) the 4 tires without wheels would weigh over 25k. Add in the wheels, 20 ton Clark axles, sub-frame, full...

Those two trucks with ag tires next to me weigh in at around 35k pounds. My M923 doesn't even get up to the 25k mark, without weight being added.

It was a truck tug-o-war. I didn't get any pics / video worth sharing with the trucks back to back, but here is a pic of some of us lined up beside each other. I lost both pulls before the leak started. Next time I will be prepared (lower pressure in the tires and LOTS more weight - I was...

Wow. You all are a wealth of information. I appreciate the willingness to help. Wheelspinner – I do have the yellow tags on the dash. I was competing in a truck pull contest. I admit that I reversed in low - shifting from high to low in the truck when under pressure is a challenge. Did the...

Jericho - That will just prevent me from cracking it again once it is fixed, right? Do you have any suggestion on how to weld / fix the crack? Here is a picture. The crack is only 2 to 3 inches long, starting at the fitting, and going about half way to the flange. Mods - I don't mean to hijack...

Newbie here. I reversed in low and cracked my transfer case in a 1983 M923A0! I should have read the TM's first! Has anyone ever tried welding these cases? Are these cast iron or cast steel housings? I can't find details after many searches trying different keywords. Any help is appreciated!