V10 or 7.3 power vs tundra 5.7

[woody0331]

So I've known for a long time that I'm riding heavy. I'm now in a better position to try and correct this. I currently have an 08 tundra 5.7 pullin a Dutchman rubicon 1905TH. (19' box, 25' tounge to bumper) Factory weight just around 5800 lbs so some where around 7-8k lbs. (Our toys are 2 bikes or 2 kayaks, no atvs). Factory tounge weight of 810lbs? So realistically actual tounge weight of 1k. We live in denver and our trips consist of just on the other side of the Eisenhower with a few 3-4 hr extended weekend trips into the mountains.
I'm considering an early 2000s v10 or 7.3 for their durability and longevity. But after looking in to the the power on the v10 and 7.3, they are not that much better and I would be dropping from a 6speed to a 4.
My tundra pulls the trailer ok up the the "Ike challenge course". Most of it I put it into 2nd gear, hold 4-4.2k rpm which yields 45mph.
How would the v10 or 7.3 compare in performance.
Keep in mind, I know the truck handling and suspension will be better in a 250/350 I'm more concerned with pulling.

[hotpepperkid]

Dragging 6K lbs up that hill with a 7.3 and you can pick whatever speed you want. My 7.3 chipped with a 68 HP chip and 11K lb 5er and I can do it at 50 to 55 in 3rd, its working it hard pulling 22 to 24 lbs boost

[marcsbigfoot20b]

12thgenusa wrote:

valhalla360 wrote:

Yes, I was exaggerating... a little bit...if the Toyota is rated at 300hp, it's probably down to around 160-170hp near the peak and you will notice it.

381 hp at sea level is 255 hp at 11,000 ft. The Tundra 5.7 is certainly not lacking in power up to and beyond its payload and towing ratings, even at extreme elevation.

A stock 7.3 will make about 235 hp at any altitude because of the turbo.

Now add just a $375 PHP Hydra tuner chip with 16 different tunes and let's say use the 80 hp tune.......

You end up with 315 hp and 650 tq.

With the toyo you have stock 381 hp and 401 tq.
At altitude, 255 hp and 268 tq.

BTW it is important to me to go up a big nasty hill at speed.
I don't want to go up a 65 mph hill at 35-40 mph while holding everyone up, not to mention at speed you have plenty of airflow for your Trans cooler, radiator , intercooler, and AC. When you just creep up the hill, your torque converter will unlock in 2nd gear and heat up the trans, and your fan (if mechanical) will kick on dragging another 20-35 hp to keep everything cool enough due to low speed.

[12thgenusa]

valhalla360 wrote:

Yes, I was exaggerating... a little bit...if the Toyota is rated at 300hp, it's probably down to around 160-170hp near the peak and you will notice it.

381 hp at sea level is 255 hp at 11,000 ft. The Tundra 5.7 is certainly not lacking in power up to and beyond its payload and towing ratings, even at extreme elevation.

[dodge_guy]

Kevin O. wrote:
Can't we all just get along??!! As long as it has 8 lugs and no plugs it's all good!!!:B

That`s actually pretty good! although we all know that more cylinders and RPM are where it`s really at!!!

[12thgenusa]

.

[Kevin_O_]

Can't we all just get along??!! As long as it has 8 lugs and no plugs it's all good!!!:B

[valhalla360]

John & Angela wrote:

Powerdude wrote:

valhalla360 wrote:


Isn't the top of that pass around 11,000ft. With a naturally aspirated engine you lose something like 3-4% per 1000ft above sea level, so your current truck is probably putting out the power of a smart car near the top..

Now that's some funny stuff. :B

SmartCar 2014 is 70 hp.

The gassers are 70 HP. My diesel smart car is 44 HP. More torque though. 🙂

Yes, I was exaggerating... a little bit...if the Toyota is rated at 300hp, it's probably down to around 160-170hp near the peak and you will notice it.

On a side note, I had one of the pre-turbo 7.3's and while I never worried if I would make it to the top, it was often slow. Crossing the pass in question (not towing) I was peaking at around 50mph. Of course it was only rated at 180hp, so I probably had around 100hp trying to pull better than 6000lbs up a good grade.

[Turtle_n_Peeps]

rhagfo wrote:

FishOnOne wrote:

rhagfo wrote:

N-Trouble wrote:
Save up a few more pennies and pick up an early 200x Duramax or 5.9 Cummins. I don't think you would be to happy with either of your two current choices.

X2!!!!

If you are considering diesel look at all three, you can find a Dmax or Cummins in newer years that will knock your socks off.

why people think Ford is the only way to go is crazy.
Loyal Ford owner for 43 years, I chose to go with the Ram/Cummins for a Diesel. Never looked back.
Yes my Cummins has 280,000+ miles and is still towing strong, that is the beauty of a diesel.

I thought the same so we gave a 5.9 cummins RAM a try for our farm/ranch use. After constant phone calls of needing to foot the bill for a repair I finally decided to cut my losses and purchase another 7.3 PSD Super Duty. And this is from a long time GM owner.

BTW... My wallet is a witness to the above. :M

Fish your crappy money pit Cummins story is getting old. Not all are good, but you Likely bought someone's beat up truck!

He lives in an alternate universe. He has to. You know; where down is up and up is down. He has to, to state a 6.0 or 6.4 are better engines than a Cummins. :B

[rhagfo]

FishOnOne wrote:

rhagfo wrote:

N-Trouble wrote:
Save up a few more pennies and pick up an early 200x Duramax or 5.9 Cummins. I don't think you would be to happy with either of your two current choices.

X2!!!!

If you are considering diesel look at all three, you can find a Dmax or Cummins in newer years that will knock your socks off.

why people think Ford is the only way to go is crazy.
Loyal Ford owner for 43 years, I chose to go with the Ram/Cummins for a Diesel. Never looked back.
Yes my Cummins has 280,000+ miles and is still towing strong, that is the beauty of a diesel.

I thought the same so we gave a 5.9 cummins RAM a try for our farm/ranch use. After constant phone calls of needing to foot the bill for a repair I finally decided to cut my losses and purchase another 7.3 PSD Super Duty. And this is from a long time GM owner.

BTW... My wallet is a witness to the above. :M

Fish your crappy money pit Cummins story is getting old. Not all are good, but you Likely bought someone's beat up truck!

[dougger222]

For what it's worth my wife's Aunt and Uncle owned a 97 PSD and 01 Cummins. Both trucks were stock and both configured the same. Pulling trailers in the mountain the PSD walked all over the Cummins. The Ram did a front flip which ended it's life and the PSD got traded off with a tad over 300K miles. They owned both trucks at the same time.

The V10 would work but it's a gas guzzler like many others have mentioned. The 7.3 PSD would be a great option but you will compromise ride quality compared to your toyota. You can find decent V10's for fairly cheap while you will pay good money for nice 7.3's.

Best advice find a dealership that has a V10 and a 7.3 and take them for a test drive. Keeping a 7.3 on the road will cost more than a V10 but the trade off is fuel mileage and pulling power.

Yes, the 4R100 trannies behind the 7.3's are not the greatest but some are better than others. For example the 340K mile F250 is on it's third tranny while the 02 Excursion is on it's original tranny and works great. 00 X with 270K miles original tranny, dually made it to 245K hard miles on it's original tranny, burnt up at land fill.

[Tystevens]

IMO, a 7.3 w/ a 4-spd auto and 235 hp isn't going to provide much of a performance upgrade over your current 5.7/6 spd. I've driven a 2000 7.3 towing about 10k of gravel, and I was honestly far from impressed. Keep in mind that the 4 spd auto behind the 7.3 isn't known for its durability, either.

The mid-2000's Duramax will have a 5 or 6 spd transmission, with a good power advantage over the 7.3. Combined w/ the great Allison transmission, power, and good history for reliability, the Duramax is the diesel powertrain I'd prefer from the early and mid-2000's. The 5.9 Cummins only has a 4 spd auto, but also has a good power advantage over the 7.3. Regardless of the badge on the front, the Duramax and Cummins will provide a noticeable improvement over what you've got.

One final note -- an F150 Ecoboost w/ the HD Payload should have enough capacity to tow your trailer well, and the twin-turbo engine won't lose power at elevation. The payload ratings and towing ratings are going to match up pretty well with an early 2000's 3/4 ton. Honestly, with the trailer you've got, that would be on my list.

[woody0331]

I'm good with the power I have. I just don't want to have less in my next truck. I would like to have a little more truck in front of my TH in case something ever went wrong and the TH got real squirrelly.
This thread has really opened my eyes on a few things. Early 2000 3/4 tons really didn't have much payload nor HP. And it pains me to admit this, but I did quick search on duramax trucks. (Yes I'm a GM hater). I had already been lightly looking at the dodges.
DW and I might have to rethink our vehicle goals.

[Grit_dog]

Put a TRD supercharger on the Tundra and let er eat!

[samsontdog]

My V10 does a great job towing my 34 ft TT nearly as well as the 7.3 that I had. My son has the Tundra 2012 that he tows a BIG BOAT with and it does a great job also. I have had 3 RVs and p/ups with the V 10s. I love them

[camp-n-family]

The turbo'd diesel won't lose power with altitude like the naturally aspirated Tundra will so they don't really compare.

If you're happy otherwise with the Tundra you could add a factory TRD supercharger. Bumps power to 504hp and 550ft/lbs torque and will keep the power up at elevation. Not cheap but will be factory warranted. It may still be cheaper than selling and finding an older used truck with unforseen problems.