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Grit dog

Black Diamond, WA

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Posted: 09/18/21 06:22am Link  |  Quote  |  Print  |  Notify Moderator

marpel wrote:

KD4UPL,

Thanks for the reply.

Sorry, I should have been a bit more clear in the first instance. My current truck is ten years old and is rated at 403 hp and 417 lb/ft. Which is why I was curious if the added lb/ft in the 6.6L would resolve the question I posed, or if it would benefit from a higher hp, more than the increase in torque.

As mentioned, my truck pulls fine for most applications, it's just when we are out on the interstates and extremely long distances that I wish for a wee bit better performance.

Marv


Yeah, look at power, and final drive ratio and you’ll see your truck is at the upper end of the scale for gassers. Not far behind the new 3/4 tons


2016 Ram 2500, MotorOps.ca EFIlive tuned, 5” turbo back, 6" lift on 37s
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JIMNLIN

Oklahoma

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Posted: 09/18/21 06:46am Link  |  Quote  |  Print  |  Notify Moderator

marpel wrote:

wing zealot and JIMNLIN,

I guess you posted while I was replying to KD4UPL.

I must really not understand trucks and towing. I often read comments about guys towing a zillion pound trailer down the highway at 65+ mph, with little effort. I just presumed the bigger HD truck/motor they describe would pull a small trailer like mine with ease, even at interstate speed.

I'll have to do some more learning.

Marv

As another poster mentioned the later model 6.2 gm cranks out 420 hp and 460 torque. Thats a big jump in towing performance over your older vehicles hp/torque.
I sometimes tow with the wifes '16 1500 chevy 4wd crew cab short bed 5.3 engine at 355 hp/383 torque and the 6 speed tranny 3.42 gears pulling a 12k or a 10k flatbed trailer with a tall 7600 lb tractor FEL and a cab (9400-9600 lbs on the trailers axles). Out on the highways at speed I use either 4th or 5th manually and never go over 60 mph. It pulls like a lead sled even with my 355 hp/650 torque Dodge/Cummins.

The 3/4 ton GM/Ram/Ford with the deeper gear ratios available would pull my 10k-12k lead sled easier but not in top OD pulling steep grades.

For pulling at interstate speeds out here in high head wind country or long mountain grades for that kind of performance the new gen diesel will do it in top OD gear.


"good judgment comes from experience, and a lot of that comes from bad judgment" ............ Will Rogers

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Sjm9911

New Jersey

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Posted: 09/18/21 07:34am Link  |  Quote  |  Print  |  Notify Moderator

I had a 2012 sierra, with tow pacage, and went to the 2000 6.6 gasser. Much better in all aspects for a TT. The 1500 can tow it, but it wasnt fun on ling rides. I think the variable engine stuff effected the performance of the older truck. So there was a delay from the cylanders after stepping on the gas. I think some bypass it, but i just got the 2500. Other stuff is the larger gas tank, so while not much better mpg, you will stop less as the 2500 tank is huge. Stability wise is better also. I was at 60 mph to 65 depending on the roads with the 1500. Now 70 is np. Grades are much easier also, 1500 on large grades with the petal pinned, i had to move over to the truck slow down lanes, with the 2500 i can pass at will. My camper is 4500 ish dry , so 5500lbs packed. And the bed of the 2500 is larger, so you xan load up more ****. Hope this helps.


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Sjm9911

New Jersey

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Posted: 09/18/21 07:39am Link  |  Quote  |  Print  |  Notify Moderator

Oh , and i had the 5.7 i think.

pitch

NY

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Posted: 09/18/21 07:46am Link  |  Quote  |  Print  |  Notify Moderator

1/2 ton.3/4 ton,1 ton, will be the same driveline wise.
Only difference being the differential ratios. Most often the engine is even detuned on 3/4 and above!

MFL

Midwest

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Posted: 09/18/21 08:59am Link  |  Quote  |  Print  |  Notify Moderator

Sjm9911 wrote:

Oh , and i had the 5.7 i think.


Good review (post above this), but you need to preview your post, before posting. [emoticon]

Now in this post, you say "i think". It would appear you owned the Sierra for 8 yrs, and unsure of what engine it had? I am not a GM guy, but I'm pretty sure it was a 5.3 (ICBW).

Anyway...carry on, don't mind my nit picking! [emoticon]

Jerry





BenK

SF BayArea

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Posted: 09/18/21 12:33pm Link  |  Quote  |  Print  |  Notify Moderator

There are other thermal safety set points to save it self from harm

Think towing in double OD is hard on the automatic *AND* the engine.

As the 6.2L is an aluminum block designed for ‘cars’ that rev higher and is NOT available on higher rated trucks (3/4 ton and up), whereas a half ton is more car these days than truck.


-Ben Picture of my rig
1996 GMC SLT Suburban 3/4 ton K3500/7.4L/4:1/+150Kmiles orig owner...
1980 Chevy Silverado C10/long bed/"BUILT" 5.7L/3:73/1 ton helper springs/+329Kmiles, bought it from dad...
1998 Mazda B2500 (1/2 ton) pickup, 2nd owner...
Praise Dyno Brake equiped and all have "nose bleed" braking!
Previous trucks/offroaders: 40's Jeep restored in mid 60's / 69 DuneBuggy (approx +1K lb: VW pan/200hpCorvair: eng, cam, dual carb'w velocity stacks'n 18" runners, 4spd transaxle) made myself from ground up / 1970 Toyota FJ40 / 1973 K5 Blazer (2dr Tahoe, 1 ton axles front/rear, +255K miles when sold it)...
Sold the boat (looking for another): Trophy with twin 150's...
51 cylinders in household, what's yours?...

garyp4951

TN

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Posted: 09/19/21 07:21am Link  |  Quote  |  Print  |  Notify Moderator

pitch wrote:

1/2 ton.3/4 ton,1 ton, will be the same driveline wise.
Only difference being the differential ratios. Most often the engine is even detuned on 3/4 and above!


The 1/2 ton does not have the same drivetrain, and the diesels are only detuned in the cab and chassis models.

deltabravo

Spokane, WA

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Posted: 09/19/21 08:15am Link  |  Quote  |  Print  |  Notify Moderator

pitch wrote:

1/2 ton.3/4 ton,1 ton, will be the same driveline wise.


Nope. Not true.
You can't get the GM 6.6 gas or diesel in a 1500. You can't get the 5.3 or 6.2 in a 2500 or 3500.


2009 Silverado 3500HD Dually, D/A, CCLB 4x4 (bought new 8/30/09)
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Sjm9911

New Jersey

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Posted: 09/19/21 10:23am Link  |  Quote  |  Print  |  Notify Moderator

MFL wrote:

Sjm9911 wrote:

Oh , and i had the 5.7 i think.


Good review (post above this), but you need to preview your post, before posting. [emoticon]

Now in this post, you say "i think". It would appear you owned the Sierra for 8 yrs, and unsure of what engine it had? I am not a GM guy, but I'm pretty sure it was a 5.3 (ICBW).

Anyway...carry on, don't mind my nit picking! [emoticon]

Jerry


Your right, thats why i said i think. Lol. It wasnt bought for towing, that came later. But it did have like an 8000 lb tow rating. And at 5500 or so was not fun to tow. I know people say that it was fine, and i do it all the time. But the fact is that it was a dog towing. I even got better suspention and tires. Helped a bit but not enough to make towing not a chore. While it can be done, its not fun. The 6.6 gasser is fun to drive, and tow, just dont expect good gas millage. But it does get better mph towing. I get 14 mph now towing, before i got 10 to 12. I get 14 to 18 otherwise, but I tend to drive faster then most. The back up camera on thr tailgate is spot on for lining up the hitch and it automatically puts the parking break on for you so you dont roll out from under the hitch. Other niceties of the newer ride is it has a camper test feature that cycles through the lights and bliners. So ,no need to put a weight on the break pedal to see if the lights are working.

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