Height differential when removing leaves on the leaf springs...

[Super_Dave]

On my C20 project, I will be adding the 2.5" C20 to C10 5 lug drop spindle conversion kit.

I will be removing the 14 bolt rearend and installing a 12 bolt, removing the C20 the overload springs on the back as well.

Then I will be removing some leaves from the C20 spring pack. What I need to know is:

1. After the overloads are off and I start to remove leaves from the spring pack, how much will I lower the back for each leaf removed from the pack.

2. Are there any recommended leaves to remove or keep as I decide how many to remove.

My goal is to determine whether to add drop coil springs to the front to even out the drop or can I control it with the just removing certain leaves from the spring pack and deleting the overload springs.

I currently have 235-85-16's on the C20. That gives me a total sidewall of 15.7" and a total wheel-tire height of 31.7" and tire width of 9.3".

I plan of going with 285-40-18 in the back with an 8.9" total sidewall, 26.9" total wheel-tire height and 11.2" tire width. I will net -4.8" in total wheel-tire height.

I plan on going with 215-50-18 in the front with an 8.4" total sidewall, 26.5" total wheel-tire height and 8.5" tire width. I will net a -5.2" in total wheel-tire height.

So, keeping these numbers in mind, I am trying to estimate the number of leaves to remove and if I will need drop coils in the front to keep the truck level or with a very slight rake.

Thoughts or criticisms welcome...