Forum Discussion

curtbaker's avatar
curtbaker
Explorer
Apr 05, 2016

We are considering a new tow vehicle.

We now have a 2005 Suburban 2500 w/Vortec 8100 496 cu in V8 (325 hp at 4200 rpm and 447 lb·ft of torque at 3200 rpm) and 4.11 axle ratio. It is rated to tow 12,500 lbs and our trailer is a Keystone Outback KRS 23' with the garage in front where we store an 800 lb. HD Road Glide. The trailer is 7500 lbs. loaded. The tongue weight is a little close to max due to the bike in front.

Our Suburban is almost pristine, very well taken care off and just had a new cam and lifters installed at 200K miles. Maybe it's time to get a newer tow vehicle, maybe not.

POSSIBILITIES:

2015/16 Ford Expedition w/3.5L EcoBoost® V6 - 365 @ 5,000 420 lb torque @ 2,250 - tow capacity 9200 lbs

2015/16 Chevy Tahoe w/EcoTec3 5.3L V8 - 355 hp 383 lb torque - tow capacity 8600 lbs. w/3.42 axle ratio

2015/16 Yukon Denali w/6.2L V8 - 440 hp 420 lbs torque - tow capacity 8400 lbs.

QUESTIONS:

What will the towing experience be with any of these new vehicles compared to our "old" Suburban? The tow ratings are much lower but there is 10 years of newer technology to consider.

How can they get that much torque/tow capacity from the Ford? It seems like a less substantial vehicle although I haven't checked the weight.

Why does the Yukon Denali have less tow capacity than the Tahoe? I believe the axle ratio is higher but the engine is larger ...?
  • None of the engines listed will give you the towing ease of the 8.1L because none of them have the effortless "low end" torque the big block has. It's got 455 ft lbs at 3200 rpm and 400 ft lbs at 1100 rpms. You've got to really wring out an eco boost to even aproach those kind of numbers. The 6.2, not as much. Think about all of those 5% grades that your Suburban takes without downshifting. It's diesel like. I know because I,ve pulled my 8000 lb rig all over the southeast with my 2001 2500.
  • I just replaced my old '98 Suburban 2500/454 and from what I've learned your Suburban with the 8.1 is a fantastic tow vehicle, too bad GM dropped it. I considered the Denali with the 6.2 but it's only available in a 1500, not the 3/4 ton. I wanted the 2500 with the bigger chassis, bigger brakes, etc. The shorter wheel base Tahoe with the 5.3 wasn't even a consideration for me. I can't speak about the Expedition except the specs on it aren't that impressive and it is also a half ton.
    I ended up spending more than I planned and bought a 2013 GMC crew cab with the Duramax and Allison 6 speed transmission. This truck is awesome and I'm so glad I bought it.
  • thanks again to all for some great info ...

    it now looks like a pickup truck is in our future ... maybe a Chevy High Country.

    Curt Baker