They are both 2wd crew cab 6' beds. One is a 2500 hd with 4.1 gears the other is 1500 hd with 3.73's. Both have stock size e range tires.

Change your 3k on startup to 2 or 2500 rpm it will go up. If your gonna call it grandpa driving I never saw grandpa ever hit 3k

At the end of the day I love and have owned a couple diesel trucks, no a gas wont pull like a diesel, but that's a far cry from not doing it. May turn a few more rpm bur a bit more gas and take a little longer to get to speed, but that don't mean they cant do it.

BS! Back before the modern day diesels came to be all you had were the 454's and 460's. In the 70's and 80's the town I worked in was ruled by the oil field. There WERE NO DIESELS and 100's of 454's pulling 15k to 16k pound backhoes on tandem dual trailers everywhere and for a long time. That is all there was back then unless you went with a semi setup. I've had all the diesels, have had a 4wd diesel with a few mods that would smoke all four tires from a roll. Saying a gas truck won't last hauling a load is nothing but ego talking or lack of being realistic. I have several trucks, one being a 97 Ford F350, regular cab, flat bed, with a 460 and 5 speed manual, still going, still hauling 16k pounds of round bales all over a few times a year, when is it supposed to fail? Hauls a 4020 with duals and water in tires, dozer blade on front,6 ft round baler, well over 20,000 lbs not including the trailer. On a long hill I may need to drop from 5th to 4th, so what, does that mean I must turn in my man card because, heaven forbid, I down shifted? What is it I'm not supposed to be able to tow? Will the newer diesels do it easier, sure, but I haul it the speed limit just fine, do I need to be able to haul it faster? If I needed to tow often and heavy, I'd 100% go back to a diesel. But for a few times a year now, the numbers are just not there.

In a 5.3 you should have about 2800 rpm to get to read line.

In a chevy diesel the 04 and 05 we have reline at 3200 and tow at 65 at 2000-2100 rpm in OD they are only 1200 rpm away from redline, whats your point?

I never saw OD in the 5.3 towing bigger stuff with it, lighter stuff the boat light flatbed you put it in 5th and it runs about 2200 at 70 put it in 4th for bigger stuff in it runs less than 3k, which is perfectly acceptable.

My 94 in the onwners manual directed you to take it out of OD if towing anything or even in hilly terrain. I towed our 20 foot boat in OD with no issues. Towing in 3rd gear wound the rpms up to about 27-2800 rpm at 65, at 70 it was 3k rpm and it redlined at 4k rpm. I sold that truck with 265k miles on it original motor and transmission never been rebuilt or had motor or transmission work done. Pulled a trencher with that truck that weighed over 9k lbs dry by itself not counting the trailer it was on 100 miles each way on I-10 going 65 with no issues other than a little sway. In no way would I recommend doing that every day with the truck or even often, but there is a huge difference between a 90's model 350 with a 700R4 that barely squeaks out 200 hp and 300 lb ft of torque on a good day and a modern hd gas truck putting out 2x the hp and a lot more torque.

Pull this and tell me a 6.0 isn't gutless

You are pulling a dang sail... What do you expect??? That's like running your pickup into a pond and claiming that the 4WD sucks because you got stuck...

Because a diesel actually pulls that damn thing and doesn't have to drop to 2nd gear at a little incline. With a tailwind. It's sucks no matter what you're pulling it with but it's a joke hooking it to that 6.0

If the 6.0 is gutless so are the MUCH higher rated and newer Dodge and Ford gassers. Not much difference real world power or mileage wise.

http://special-reports.pickuptrucks.com/2014-ultimate-three-quarter-ton-hd-challenge.html

So why hasn't Ford made a v8 ecoboost for their 3/4 ton trucks?