Engineering specs database?

[iamdub]

Posted this in here since it applies to all models.

Does anyone know if and where there's a database that has the engineering specs for vehicles? I'm trying to determine the front-rear weight bias (center of gravity) of my Tahoe and a few other vehicles such as a full-size crew cab (diesel and gas) that I may potentially have on my lift to determine it's best placement in my shop. I know I could put my Tahoe on the scales at the local truck stop and find it's C/G with those figures and the wheelbase, etc. But I'd have to do this for mine, my neighbor's diesel CC, my brother's gas CC, etc.

This is about the most complete info I've found so far: https://www.thecarconnection.com/specifications/chevrolet_tahoe_2008_2wd-4dr-1500-ls

 

[Doubeleive]

I found some really interesting information before that probably included that and I think I had posted a link to it on the forum but after doing several searches I can't find it and it was a while back, figures, I think it's just a matter of imputing the correct keywords into a google search.

 

[Doubeleive]

this might help there is a 2007 listed in this section and it gives a lot of specs and information for the entire product line

https://www.gmheritagecenter.com/gm-heritage-archive/vehicle-information-kits.html

search: 2000's, chevrolet trucks, it lists both suburbans and tahoes

 

[iamdub]

this might help there is a 2007 listed in this section and it gives a lot of specs and information for the entire product line

https://www.gmheritagecenter.com/gm-heritage-archive/vehicle-information-kits.html

search: 2000's, chevrolet trucks, it lists both suburbans and tahoes

Thanks, Wes! I downloaded that .pdf.

Ok, brainiac time: On page 6, it says the weight distribution is 52/48. To find the balancing point, would I need to measure back from the front 48% of the overall length (202") or does it go off of the wheelbase (116")? I'm inclined to think it goes off the overall length cuz almost dead-center between the wheelbase has got to be too far back.

 

[Doubeleive]

Thanks, Wes! I downloaded that .pdf.

Ok, brainiac time: On page 6, it says the weight distribution is 52/48. To find the balancing point, would I need to measure back from the front 48% of the overall length (202") or does it go off of the wheelbase (116")? I'm inclined to think it goes off the overall length cuz almost dead-center between the wheelbase has got to be too far back.

ya there's a math quiz involved with that , it's going vary depending on how many gallons of gas are in the tank and passengers and any modifications added, i.e. wheels, sway bars, etc

 

[swathdiver]

Thanks, Wes! I downloaded that .pdf.

Ok, brainiac time: On page 6, it says the weight distribution is 52/48. To find the balancing point, would I need to measure back from the front 48% of the overall length (202") or does it go off of the wheelbase (116")? I'm inclined to think it goes off the overall length cuz almost dead-center between the wheelbase has got to be too far back.

I would think it would be between the axles as the weigh points are the axles.

Literature says my truck's weight distribution is 52/48 and 51/49. Her factory weight (includes full tank of full and no people aboard) is 5,901.

On the CAT Scales she weighed 5900 with 3,040 pounds on the steer axle and 2860 on the drive axle or 51.53% and 48.47%.

Ok, googling I found two GM Upfitter files that I think you'll like. My brain is kinda fried today so you can do all the calculations! One or both show the formulas and pictures and even shows how to solve for CG!

Look for these: 2000_LD_GeneralInformation.pdf and Early_Release_2017-FULL_LCF_061416.pdf

 

[iamdub]

ya there's a math quiz involved with that , it's going vary depending on how many gallons of gas are in the tank and passengers and any modifications added, i.e. wheels, sway bars, etc

And the removed 800 lbs. of third row seats...

 

[homesick]

Thanks, Wes! I downloaded that .pdf.

Ok, brainiac time: On page 6, it says the weight distribution is 52/48. To find the balancing point, would I need to measure back from the front 48% of the overall length (202") or does it go off of the wheelbase (116")? I'm inclined to think it goes off the overall length cuz almost dead-center between the wheelbase has got to be too far back.

I can offer nothing solid to justify this, but I'm kinda thinking the balance point is the same, measured either way.

joe

 

[iamdub]

I would think it would be between the axles as the weigh points are the axles.

Literature says my truck's weight distribution is 52/48 and 51/49. Her factory weight (includes full tank of full and no people aboard) is 5,901.

On the CAT Scales she weighed 5900 with 3,040 pounds on the steer axle and 2860 on the drive axle or 51.53% and 48.47%.

Which is why I was thinking the wheelbase would be the measuring points but doubted myself as this just seemed way too far back. 48/52 is pretty darned close to 50/50. 52% of 116" is 60.32", which is right at the front edge of the driver's door handle. Just for kicks, I went by the overall length (202"), and the 52% point put my about 1.5" FURTHER BACK than going off of the wheelbase. So, maybe the engine, all the accessories, full radiator, etc. isn't as heavy as I thought. Since I have the third row seats removed, I'll fill up the tank and hit the scales and know for sure.

Ok, googling I found two GM Upfitter files that I think you'll like. My brain is kinda fried today so you can do all the calculations! One or both show the formulas and pictures and even shows how to solve for CG!

Look for these: 2000_LD_GeneralInformation.pdf and Early_Release_2017-FULL_LCF_061416.pdf

Tried to Google for that .pdf but it just returned a bunch of results for .pdf converter programs.

 

[iamdub]

I can offer nothing solid to justify this, but I'm kinda thinking the balance point is the same, measured either way.

joe

You posted as I was measuring, and your thinking is correct. They're really close, within 2" of each other.