(partially) new Tundra coming?

calicamper

Expedition Leader
Great info!

Regarding the SR engine spec, peak HP and TQ are at lower rpms; 2,400 and 2,000:
Horsepower i-FORCE: 389 hp @ 5,200 rpm (SR: 348 hp @ 2,400) i-FORCE MAX: 437 hp @ 5,200 rpm
Torque i-FORCE: 479 lb-ft @ 2,400 rpm (SR: 405 lb-ft @ 2,000) i-FORCE MAX: 583 lb-ft @ 2,400 rpm

Weights are about the same as current I believe. I knew the F150 was light, but didn't realize they GMs were.
Looks like Ford bumped the 3.5 to 440 recently. Hard to say if they tweaked bits in the 3.5 to run that or not.
 

skrypj

Well-known member
Great info!

Regarding the SR engine spec, peak HP and TQ are at lower rpms; 2,400 and 2,000:
Horsepower i-FORCE: 389 hp @ 5,200 rpm (SR: 348 hp @ 2,400) i-FORCE MAX: 437 hp @ 5,200 rpm
Torque i-FORCE: 479 lb-ft @ 2,400 rpm (SR: 405 lb-ft @ 2,000) i-FORCE MAX: 583 lb-ft @ 2,400 rpm

Weights are about the same as current I believe. I knew the F150 was light, but didn't realize they GMs were.

That 2400 rpm has to be a typo. To make 348 hp at 2400 rpm it would need to be making like 760 ft-lbs of torque.

I am guessing maybe they meant 4400 or 5400.
 
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skrypj

Well-known member
Looks like Ford bumped the 3.5 to 440 recently. Hard to say if they tweaked bits in the 3.5 to run that or not.

Thats just the HO motor that makes 440. The regular 3.5 in the normal F150 makes 400hp/510 torque.

In the past, the HO that was in the 2017-2020 Raptor and 2019+ Limited models had different pistons, different compression ratio, different exhaust manifolds, and slightly different turbos and was rated on 93 Octane. The regular 3.5 Ecoboost is rated on 87 octane.

This new HO apparently has the same compression ratio as the regular 3.5. There might still be some differences, but I have a feeling most of that power difference between the HO and non-HO might be from the octane. Previous models of the F150 non-HO 3.5 would pick up something like 25-30 hp at the wheels just from switching 87 to 93 octane on the stock tune.
 

calicamper

Expedition Leader
Thats just the HO motor that makes 440. The regular 3.5 in the normal F150 makes 400hp/510 torque.

In the past, the HO that was in the 2017-2020 Raptor and 2019+ Limited models had different pistons, different compression ratio, different exhaust manifolds, and slightly different turbos and was rated on 93 Octane. The regular 3.5 Ecoboost is rated on 87 octane.

This new HO apparently has the same compression ratio as the regular 3.5. There might still be some differences, but I have a feeling most of that power difference between the HO and non-HO might be from the octane. Previous models of the F150 non-HO 3.5 would pick up something like 25-30 hp at the wheels just from switching 87 to 93 octane on the stock tune.
Yeah I have the stock 400hp 3.5 but only run 87. If I ever haul heavy and at speed I’ll bump the octane, but my typical use is all low stress stuff. Same deal for my old 07 4.7 87 around town. But highway road trips it needed 91, would ping at 75mph otherwise when pushed harder on 87. The 07 4.7 Sequoia got a hp bump over the prior yrs and had a different notation in the owners manual regarding octane needed/suggested etc.

The older yr were lower HP from factory and didn’t need it. Same for the 100 series 4.7’s they got a lazy factory tune. Vs the 07 Sequoia got the over caffeinated soccer mom stop light racer tune.
 

Grassland

Well-known member
So Toyota guys, what does the SR5 generally add over a base model?
Is that sort of like Ford's 301a and 302a option packages on a vanilla XLT?
Usual power options like windows and locks, and maybe a better interior fabric and leather steering wheel sort of thing?
The double cab SR5 TRD being around 1850# payload, having a rear locker, and hopefully being affordable, seems to be a good mix.
32 gallon tank, if available in that configuration, would only cost me roughly 80km of range compared to my current 36 gallon, but it still gives me 500km with a large safety net, which is great.
 

rruff

Explorer

tacollie

Glamper
So Toyota guys, what does the SR5 generally add over a base model?
Is that sort of like Ford's 301a and 302a option packages on a vanilla XLT?
Usual power options like windows and locks, and maybe a better interior fabric and leather steering wheel sort of thing?
The double cab SR5 TRD being around 1850# payload, having a rear locker, and hopefully being affordable, seems to be a good mix.
32 gallon tank, if available in that configuration, would only cost me roughly 80km of range compared to my current 36 gallon, but it still gives me 500km with a large safety net, which is great.
The fuel consumption should be better with the Tundra than your V6. 1850lbs sounds high. I bet it's closer to 1650.

They talked about the new Tundra in the overland journal podcast. Sounds like Toyota improved a lot of things over the previous gen.
 
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brycercampbell

Active member
That 2400 rpm has to be a typo. To make 348 hp at 2400 rpm it would need to be making like 760 ft-lbs of torque.

I am guessing maybe they meant 4400 or 5400.
To go right along with all the other typos in this launch. How do they get their own spec sheet wrong multiple times?
 

DaveInDenver

Middle Income Semi-Redneck
To go right along with all the other typos in this launch. How do they get their own spec sheet wrong multiple times?
The typo only exists in the one place that I could find, under the HP peak for the SR trim engine. It looks plausible otherwise, torque peak could be correct at 2,400/2,000 RPM. It's a pre-production document probably done by a graphics designer and not an engineer so who knows, it might not be as obvious to someone like that.

Screen Shot 2021-10-26 at 2.24.16 PM.png

Screen Shot 2021-10-26 at 2.24.37 PM.png
 
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Grassland

Well-known member
Not having locker or big fuel tank or brake control in a sr5 is a real Nissan type of move if that post is correct. I'm fine with small screen or lower HP, I don't like gadgets or big screens. I like dials and buttons.


I drive a 300 HP NA V6 right now, and I'm still here. And 18-20 liter per 100k while towing 4500-5000 lb.
A 50 HP gain at even the same fuel economy is really a win, I think it's like a 120 torque bump.
 

rruff

Explorer
Not having locker or big fuel tank or brake control in a sr5 is a real Nissan type of move if that post is correct.

Just to be clear, that's the SR...

On mine I gave up intermittent wipers (!?... $80 and a few minutes to fix), no remote locks, no big tank, no fogs... I think that was it. Came with the tow package and tow mirrors. Has a bench front seat and steerer shifter, but I would have paid extra for those. Paid $31.2k out the door.
 

brycercampbell

Active member
The typo only exists in the one place that I could find, under the HP peak for the SR trim engine. It looks plausible otherwise, torque peak could be correct at 2,400/2,000 RPM. It's a pre-production document probably done by a graphics designer and not an engineer so who knows, it might not be as obvious to someone like that.

View attachment 689595

View attachment 689596
There were a few more that they fixed. I think that’s the 3rd one. Still hoping the trucks a success but they aren’t helping themselves. They also posted a 6.5ft bed w/ a crewmax on IG with a caption about the available 8ft bed which isn’t even an option on a Crewmax.

7549F940-DFDB-4FF9-97C7-CB834F658E82.jpeg
 

rruff

Explorer
Found this on that page. Base MSRP of $51,900 on a Limited 4x4, and an EPA mpg of 17/22 and 19 combined.

2fce356db1c5022f5621fd84019e0b1f0b5ed476fc26620bc7a84606f9ab503b.jpg
 

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