Towing Capacity 77 3/4 Ton 4X4

[Number21]

Originally Posted by Grease Monkey Kuztum

Brake size, Im not 100% sure what the differences in front brakes were compared between the trucks besides 2wd and 4wd obviously have different brakes and same with 44 vs 60 front axles 60 is gonna have bigger rotors atleast.....
axle or differential size is a huge factor on how much weight it takes before it shreds itself apart.... A 1 ton truck can look the same and one has a 10 bolt while other has 14 bolt obviously the 14 bolt will take more abuse... Usually they have bigger drums as well... the bigger the differential the more abuse it will take towing heavy.

the actual gauge of steel used on frame rails differs...
uhm theirs alot that can make small differences in load capacity... You can modify almost anything nowdays to make it do what you want, will it do it well is the question...

I Never said an i6 would out tow your big block so please dont put words in my mouth
The way I described it is if you have a big block in a half ton not meant for it and then a 1 ton truck with

My point is that the published information from GM WITHOUT listing any drivetrain parts is completely worthless. My K20 has the same rear axle, brakes, and 350 engine, as my C30 rated at twice the towing load. It's only rated at 800lbs less GVW (8200 vs 9000) and that's about what the extra running gear weighs. So why can't I pull 12,000lbs with it, according to GM literature? Should be able to do at least 10k, if a 2WD of the same gearing/axle/engine can pull 12k.

Brakes really have little to do with it, as you're not supposed to tow anything over 1000lbs without trailer brakes.