I saw a GMC advertisement that said the Sierra could tow 16,100 pounds. Was that a misprint???????????

 

probly not. GM keeps the same name throughout the truck line. So the tow rating you saw was for a 1ton seria whith a D-max.

 

If I'm not mistaken, the F450 with a 6.8 V10 is rated to tow that much or better.

 

but the 450 is bigger than a 1ton isnt it.

 

your right - the 450 is a cab/chassis. I went back and recheck the tow ratings and the GM's highest with a pickup is 16,100 with either the 8.1 V8 or the 6.6 dsl as compared to Ford's highest of 14,200 with the 6.8 V10 or 13,700 with the 6.0 dsl (trailer life website tow ratings). I was surprised that Ford has the V10 rated to tow more than the 6.0dsl.

 

16,100???? Seems like it would have made big news if a pickup could haul that much. Maybe not.

 

That's a load of crap. GM always overrates their trucks to try and gain sales. You put a 16,100lbs. trailer on a Sierra and see what happens....the front end will be bowed out and the rear will be dragging the ground. It's obvious too, how can IFS stay straight with that much pushing down on it?

The GMC is a fine example of overrating.

G-otta
M-echanic
C-oming

 

Nah, don't be surprised.....

V10 weighs less than the diesel by at least a few hundies on the scale, so that's less torque going to moving the truck and going towards moving the load instead....

 

MW95F250, the IFS will not "blow out" under a big load. I have never had troubles whith loading down IFS rigs. Please explain that statement, becouse im lost

 

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I may be wrong, but I don't think so Alf, I mean if that's the case than a small lady in a psd should be able to tow as much as a fat hoss driving a V10 - as their weight difference would "level" the playing field. Besides 3- 400 lbs should not soak up that much power, the V10 is giving up 15 horse and 135 LBFT.


I think it's two reasons, 1. The V10 gets 4.30 gearing to outpull the PSD max for max, and 2. It has a higher RPM range and wider powerband. It also actually develops more torque at idle.
It's amazing how the V10 and 8.1L gassers have more torque than their respective diesel brothers until those turbos spool up(which is very quickly) shows what dogs both the diesels would really be without them.


MWF250;

That's a load of crap. GM always overrates their trucks to try and gain sales. You put a 16,100lbs. trailer on a Sierra and see what happens....the front end will be bowed out and the rear will be dragging the ground. It's obvious too, how can IFS stay straight with that much pushing down on it?

The GMC is a fine example of overrating.
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Yes I too would like further clarification on this. There is nothing wrong with IFS for towing in my opinion. Twin I beam is a form of IFS, which Ford has been using for many years without problem.
It can be argued that Twin I beam has the advantage of ruggedness and strength over SLA, but in many ways SLA as used in GM trucks is superior- better handling, predictable turning, tighter turn radius, and torsion bars can actually handle heavier weights with more stability than comparable coil springs can. This is why the GM axle is rated to carry more weight than Ford front axles are-even though the I beam is somewhat stronger. Look at all the motor coaches - most use torsion bar suspensions- and none use coil springs, these are all high center of gravity vehicles which put immense strain on their suspension components especially when making turns.

If your talking 4x4, well, then I agree- solid axles are much better than IFS, with a snow plow your actually hanging better than 1000 lbs give or take way out over the front end, and 4x4's are used to do things 2wd's are not- like pushing, which is a way different kind of stress on the vehicle suspension than pulling is.- I really don't know what GM went with IFS on 4x4's for- stupid I guess.

And those 13000 lb AAC 11.5", or GM corporate 14 bolt 10.5" rear axles are not going to drag or bow under any load these vehicles can even think about being used for- those HUGE GM frames would snap first.

 

What I was referring to was the front end the a-arms doing like this / \ when loaded down, bowing out, not blowing out, resulting in increased tire wear and poor handling.

 

alrighty i gotchya now. But i still dont realy understand why your thinking this way. A properly loaded trailer shouldnt pick the front end like that. If you have towed like this then your not doing it right...

 

I've noticed it more with slide-in campers, but I have seen a couple of more forward-loaded 5th wheels and gn's do it.

 

16,100 is the rating for a reg. cab LB 4X2, my CC 4X4 SB with the Duramax/Allison is only rated to pull 15,300. Properly overloaded and leveled, I have pulled 21,000 for the gravel pit to my house. Not a problem, would not take it out on the hiway as it might endanger other drivers if something were to go wrong....flame away, everyone overloads if they work there truck not just show it.

 

oh yeah, i over load my 80 chevy luv alot. Its rated to hual 900lbs in the bed, when we had a pellet stove i would load 2,000lbs pallets on it in one go. I have hauled 2yards of gravel in a single axle trailer (total wieght roughly 3500-4000lbs). Over loading is a fact of life, i think truck companies under rate thier trucks if anything know thier costomers will work em like a dog...