Front adj coil overs and ride height questions

[Tony1968]

You have the right idea with the math, but there's one big issue. The way you're figuring out the load would be with the spring placed at the tip of the a arm. But the spring is actually located about half way in the tip and the pivot point giving mechanical advantage... So half your figures and you'll be closer.

So you are saying it won't drop even half an inch???

 

[pontiacgp]

So you are saying it won't drop even half an inch???

why not wait until you have the car together......if you are not planning on changing the spring now why even try to figure out how much the car will drop with the spring that you have in there now

 

[Streetbu]

No, I'm talking about the number of pounds needs to be cut in about half to make it drop because of leverage of the a arm. I think you'll be fine, get the car together then mess with ride height.

 

[Northernregal]

This is where I was at. Pretty sure you have the same coil over setup? UMI and Vikings?

This was ride height.

 

[Tony1968]

This is where I was at. Pretty sure you have the same coil over setup? UMI and Vikings?

View attachment 149224



This was ride height.
View attachment 149225

Yes same setup. How tall are your front tires?

 

[Northernregal]

Yes same setup. How tall are your front tires?

245/40R18. So like 25" give or take. Tad on the small side I think.

 

[Tony1968]

245/40R18. So like 25" give or take. Tad on the small side I think.

Mine are a tick over 25"
Cool. Thanks!

 

[Macguyver]

My question has to do with how much the front suspension will drop when fully assembled with fenders, hood, bumper etc. All stock.
I had coil over spring perch up about 1.5 inches on the shock threads and when placing one fender in location not bolted in I am at 28.75 inches to ground. So I lowered the spring perch leaving only about a quarter inch of threads left on bottom of shock which should have lowered the height. But I'm still at 28.75?
My question is once the whole front end is installed including coolant, radiator, engine oil etc. Will that number drop? I'm guessing it would add about 200 lbs?
Otherwise I'm going to have way too much space between top of fender and tire. I'm talking 4x4 stance !
Sorry if this is a goofy question I'm just not sure how much it will settle
Thanks

One common problem we see is that people will over tighten the lower control arm bolts to the point where the suspension is bound. Stock lower control arms, just curious?

 

[Tony1968]

One common problem we see is that people will over tighten the lower control arm bolts to the point where the suspension is bound. Stock lower control arms, just curious?

No. All UMI. Control arms are snug but didn't torque them down yet

 

[Rodsridess]

My question has to do with how much the front suspension will drop when fully assembled with fenders, hood, bumper etc. All stock.
I had coil over spring perch up about 1.5 inches on the shock threads and when placing one fender in location not bolted in I am at 28.75 inches to ground. So I lowered the spring perch leaving only about a quarter inch of threads left on bottom of shock which should have lowered the height. But I'm still at 28.75?
My question is once the whole front end is installed including coolant, radiator, engine oil etc. Will that number drop? I'm guessing it would add about 200 lbs?
Otherwise I'm going to have way too much space between top of fender and tire. I'm talking 4x4 stance !
Sorry if this is a goofy question I'm just not sure how much it will settle
Thanks

I removed the 400lb/inch springs and installed 700lb/inch on my 87 monte with 350...air conditioning pump etc.... excellent stance