Out of Curiosity, How Much Does the Cummins HO and Aisin Trans Weigh?

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Goose55

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I was going to Google this but felt lazy. Out of Curiosity, How Much Does the Cummins HO and Aisin Trans Weigh?
 

nlambert182

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The engine is roughly 1,070ish lbs. The Aisin weighs somewhere around 400-420 lbs if I remember right.
 

OC455

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Cummins HO 6.7 weighs: 1070 lbs.
AISIN Transmission weighs: 400 lbs.

That's what the interwebs say...

For comparison the Hemi 6.4L weighs in at about 582 lbs and the ZF 8H75 transmission weighs about 200 lbs.
 
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Goose55

Goose55

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With 3/4 of a ton plus frame, suspension, components, etc., that's why I run my front tires at 80 psi, cold
 
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nlambert182

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Cummins HO 6.7 weighs: 1070 lbs.
AISIN Transmission weighs: 400 lbs.

That's what the interwebs say...

For comparison the Hemi 6.4L weighs in at about 582 lbs and the ZF 8H75 transmission weighs about 200 lbs.
Makes sense for the added payload
 

Dean2

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With 3/4 of a ton plus frame, suspension, components, etc., that's why I run my front tires at 80 psi, cold
Check out an inflation chart, even with the extra weight, 80 psi empty is way over kill. It will even far exceed the max GVW a 3500 is rated for. Two front tires at 80 psi would be rated 6,600 pounds on an E rated tires. I have never seen a pickup with the front that heavy, even at max load.

https://tirepressure.com/lt275-70r18-tire-pressure
 

nlambert182

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I run mine at about 72psi empty, but primarily because I get a low tire indicator if I drop below 70psi on any of my tires.
 

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I used alphaobd and reset mine. I run 50 to 55 front 40 to 45 back on a 2500 gaser. Rides WAY better, handles better and stops better, especially on ice and packed snow. Tires wear more evenly as well
 

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My tire wear has been perfect, so I don't really worry about it too much. I'm running Michelins with 27k miles on them and they still look like new. I guess it it's not broke, don't fix it. :D
 

Timsdually

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I used alphaobd and reset mine. I run 50 to 55 front 40 to 45 back on a 2500 gaser. Rides WAY better, handles better and stops better, especially on ice and packed snow. Tires wear more evenly as well
Now, if I run my fronts less than 75lbs they wear on the outer edge.
 

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yas I bought mine slightly used and the dealer had moved the front tires to the rear because they were already showing wear on the outside edge. before camping season starts I plan to get the front end aligned. I find my 2500 rides best with tires at 60# when empty
 

nlambert182

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What can I say, some guys like riding a Pogo stick. ;) :happy107:
TBH... I've never noticed it. :)

I was a little concerned with driving it last Tuesday to the airport in 3" of ice without airing down but it did surprisingly well.
 

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I run my tires at 50 PSI front and rear when unloaded. Couldn't care less about the warning in the EVIC. Could probably go down to 45 PSI according to load chart.

No reason to run your tires at high pressure unloaded, unless you don't care about your back.
 

Jbinramona

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Charts are general guidlines. It doesn’t mean squat. You need to do a chalk test to see how your tread pattern meets the road surface.

Here’s how to do the chalk test:
Load your vehicle as you plan to drive it. Adjust to your desired tire pressure. Drive around until tires are at operating temp. Find a smooth asphalt surface for test. Rub chalk across tire tread until your tread is covered with chalk drive forward just enough for one revolution. Check to see how chalk has changed. If chalk only removed on outside of tread, your under inflated, only the center over inflated.

Jeepers do this when installing bigger tires since there is no “chart” for your specific setup.

Try it, you will be surprised at the results.
 

Riccochet

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Charts are general guidlines. It doesn’t mean squat. You need to do a chalk test to see how your tread pattern meets the road surface.

Here’s how to do the chalk test:
Load your vehicle as you plan to drive it. Adjust to your desired tire pressure. Drive around until tires are at operating temp. Find a smooth asphalt surface for test. Rub chalk across tire tread until your tread is covered with chalk drive forward just enough for one revolution. Check to see how chalk has changed. If chalk only removed on outside of tread, your under inflated, only the center over inflated.

Jeepers do this when installing bigger tires since there is no “chart” for your specific setup.

Try it, you will be surprised at the results.
Jeeps do it because the tires are generally oversized and a Wrangler weighs nothing. I have to run my 35's at 24-26 psi on my JKR. If you're running OEM sized radials on a 3/4 or 1 ton truck a chalk test is useless. I get full tread wear at 70 PSI or 50 PSI on the rears, and 60 or 50 on the front. Quality of the ride is far different between the pressures when unloaded.
 

Jbinramona

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Is it 70 or 50 in the rear? You just destroyed your own logic.

I tow a 45’ fifth wheel with my dually. Being a retired truck driver I actually ran my rig over the scales 33,000lbs. I know my axel weights, do you?

And yes I am running g rated tires because the stock tires are inadequate.

How many of us drive a box stock truck with zero load?

Ya gotta know yer vehicle!!
 

Riccochet

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Is it 70 or 50 in the rear? You just destroyed your own logic.

I tow a 45’ fifth wheel with my dually. Being a retired truck driver I actually ran my rig over the scales 33,000lbs. I know my axel weights, do you?

And yes I am running g rated tires because the stock tires are inadequate.

How many of us drive a box stock truck with zero load?

Ya gotta know yer vehicle!!
I drive a box stock truck with just me in it and maybe 20-30 lbs of gear. It's pretty easy to do math here. I did stay at a holiday inn express once or twice. At 50 PSI my tires are capable of holding 2680 lbs each. My truck weighs 6953 lbs empty. Are you following?

I air up when I tow, I air down when I don't. It's pretty simple. They make these things called air compressors. Amazing devices. They really are.

There really is no need, for me, to drive around with my tires at 65 front and 70 rear when I'm unloaded. That's what the door sticker calls for, because that's what Ram spec'd the tires to be at in order for the tires to handle the full load capacity of the truck. I don't have 3000 lbs of shtuff in my truck. I'm not a hoarder. Heck, I don't even air up when I tow my bass boat.

You do you, boo.
 

nlambert182

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Is it 70 or 50 in the rear? You just destroyed your own logic.

I tow a 45’ fifth wheel with my dually. Being a retired truck driver I actually ran my rig over the scales 33,000lbs. I know my axel weights, do you?

And yes I am running g rated tires because the stock tires are inadequate.

How many of us drive a box stock truck with zero load?

Ya gotta know yer vehicle!!
Did you replace your rims when you upped to G rated tires? Your stock rims are only rated for 85 psi. G rated tires fully inflated are rated for 110 psi so if you kept the stock rims you've reduced the load capacity of the G rated tires just on the rims air pressure rating unless you're running pressures higher than the rim's rating. You didn't gain as much as you may think (unless you did upgrade the wheels).

For example:
A load range G tire (17.5 rims) aired up to 85 psi is rated around 3,095 lbs ea when ran on a dually. Aired to 110psi they're rated at 3,525 when ran on a dually.
A load range E tire (17" rims) aired up to 85psi ran on a dually is right at 3,000 lbs ea.

It will vary a bit based on the brand of tire, but you get the idea. I don't see the benefit of moving the truck up to a G rated tire unless you're airing it to full psi.

Yes, you definitely need to know your vehicle... and what you install on it.
 
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