Growing up doesn't have to suck

[tgui]

Oh,I used circle d when I built up my 4l80 and swapped into my old Yukon. They're great.

 

[iamdub]

Amazing work.

Thank you!

Still at a standstill. I'm trying to find the weight of my motor to calculate where to reposition the Tahoe on the lift to have it as balanced as possible. I wanna do the trans work with it in the air.

 

[tgui]

Thank you!

Still at a standstill. I'm trying to find the weight of my motor to calculate where to reposition the Tahoe on the lift to have it as balanced as possible. I wanna do the trans work with it in the air.

I did my swap on the floor. Don't do that.

 

[iamdub]

Oh,I used circle d when I built up my 4l80 and swapped into my old Yukon. They're great.

I've seen 'em around for a long time. I feel I got a nice unit from a very reputable company, and for a good price.

 

[iamdub]

I did my swap on the floor. Don't do that.

Lol
I try to do anything I can standing. Old knees and back require it. Plus I built a drain pan specifically for tasks on the lift and I have yet to use it.

I'm just dropping the pan to change the filter and installing the servos in the side- if that other one would ever get here.

 

[kbuskill]

Thank you!

Still at a standstill. I'm trying to find the weight of my motor to calculate where to reposition the Tahoe on the lift to have it as balanced as possible. I wanna do the trans work with it in the air.

Just put your lift arms where you normally do and then put a couple chains over the top of the frame and around the bottom of the lift arms and stick a bolt through the links to hold the chain together.

If chain won't fit between the frame and body then I guess you could use a heavy duty strap like a tow strap or ratchet strap.

 

[iamdub]

Just put your lift arms where you normally do and then put a couple chains over the top of the frame and around the bottom of the lift arms and stick a bolt through the links to hold the chain together.

If chain won't fit between the frame and body then I guess you could use a heavy duty strap like a tow strap or ratchet strap.

I'm not much concerned about it tipping off the arms, I just like it to be centered so there's as little weight as possible pulling on the column anchors.

My educated guess is that my 5.3 is about 550lbs. Estimating the Tahoe's curb weight is 5,300lbs. makes 550lbs. about 10.5% of the weight. Is it as simple as moving it forward 10.5% from the current balancing point I have marked?

 

[kbuskill]

I'm not much concerned about it tipping off the arms, I just like it to be centered so there's as little weight as possible pulling on the column anchors.

My educated guess is that my 5.3 is about 550lbs. Estimating the Tahoe's curb weight is 5,300lbs. makes 550lbs. about 10.5% of the weight. Is it as simple as moving it forward 10.5% from the current balancing point I have marked?

Maybe... possibly... heck, I don't know... if I knew I wouldn't have told you to use a chain or strap... lol

That would make sense logically to me though.

 

[Doubeleive]

the upfitter guide should show the center, it has diagrams

 

[iamdub]

Now that I think of it, the engine weight isn't exclusively on the front end. It's part of the total weight and it still loads the rear some. Buuuut, the engine is well ahead of the balancing point. The Tahoe has a weight distribution of 52/48, so the balancing point is just ahead of center, which I found to be right at/just in front of the front door handle.

I'm picturing the Tahoe hanging by a cable connected at that balance point, like a Christmas tree ornament. If you removed 10.5% of the weight from the area in front that balance, the Tahoe would tip back, nose to the sky. But if you moved that hanging cable back 10.5%- would it balance again? I don't think it's that simple... Or is it? Or is it plenty close enough to not ramble on any more about it?

 

[iamdub]

the upfitter guide should show the center, it has diagrams

I found the center of balance for a stock vehicle and marked the shop floor to align that center with the center of the lift's columns. Those upfitter guides don't account for a missing engine!

 

[kbuskill]

Now that I think of it, the engine weight isn't exclusively on the front end. It's part of the total weight and it still loads the rear some. Buuuut, the engine is well ahead of the balancing point. The Tahoe has a weight distribution of 52/48, so the balancing point is just ahead of center, which I found to be right at/just in front of the front door handle.

I'm picturing the Tahoe hanging by a cable connected at that balance point, like a Christmas tree ornament. If you removed 10.5% of the weight from the area in front that balance, the Tahoe would tip back, nose to the sky. But if you moved that hanging cable back 10.5%- would it balance again? I don't think it's that simple... Or is it? Or is it plenty close enough to not ramble on any more about it?

Well, I spoke my piece... I would chain it and not waste anymore time and brain cells... but that's me... I am certain you will figure it out as you are very persistent.

 

[iamdub]

Well, I spoke my piece... I would chain it and not waste anymore time and brain cells... but that's me... I am certain you will figure it out as you are very persistent.

*Misguidedly persistent

 

[wjburken]

*Misguidedly persistent

Drop the spare tire, remove the 3rd row seats and drain the fuel tank and your CG shouldn’t more more than 8”-12”. You could always put some 70# bags of tube sand on the front floor board.

 

[Doubeleive]

i'd put one jack stand on one side where I figure the middle is, then jack it up on the other side and fine tune.

 

[wjburken]

i'd put one jack stand on one side where I figure the middle is, then jack it up on the other side and fine tune.

Well, there’s that method as well.

 

[iamdub]

Drop the spare tire, remove the 3rd row seats and drain the fuel tank and your CG shouldn’t more more than 8”-12”. You could always put some 70# bags of tube sand on the front floor board.

I'm almost there- 1/4 tank or less and them seats are rarely in place. I estimated my curb weight accordingly.

 

[iamdub]

i'd put one jack stand on one side where I figure the middle is, then jack it up on the other side and fine tune.

Now THIS is some crazy shit I just might do! I have some really thick angle iron I'd put between the jack stand and frame to spread out the load to not bend the frame.

Thanks for the idea... I think... Maybe. lol

 

[Doubeleive]

Now THIS is some crazy shit I just might do! I have some really thick angle iron I'd put between the jack stand and frame to spread out the load to not bend the frame.

Thanks for the idea... I think... Maybe. lol

you only have to lift it up a little bit to find the fulcrum, no engine so should be pretty light anyway

 

[swathdiver]

One website writes that a fully dressed iron block LS is 580 pounds including the ECM, exhaust manifolds, wiring harnesses, etc.