Towing capacity of 5.9 Limited...
Forgive me crowd if this has been addressed in an archive somewhere; if so, please point me in that direction.
Anyhow, having just purchased a 98 G/C 5.9 Limited primarily for the purpose of towing my race car (damn, should have bought the Ram / Cummins diesel...), I've run into a small problem.
It appears as though the 5.9L is rated at 5000lbs towing capacity, while the 5.2L is rated at 6500lbs?? Now, I'm not sure if Quadra Trac is the culprit behind this, or perhaps a cooling issue. I fail to see how it's that much of a problem, seeing as the chassis is the same, braking should be equivalent or better, and HP/TRQ are significantly increased. So why would the capacity be decreased by 23%?
And if it is cooling, can this be corrected though a larger (2 or 3 core) radiator, and /or the combination of engine oil cooler and tranny cooler?
Any help would be greatly appreciated.
PS. The total weight I need to tow will be roughly 5000lbs (2700 lbs for race car, roughly 2000 lbs for trailer). Add in fuel, spare tires, tools etc, and I don't want to push my luck unneccesarily.