Lowering Block apinions

[ck5566]

Originally Posted by raggedjim

Well, I now have 17" wheels with tires that have 4" of side wall. The lowest point of the suspension is 4.875" (the bolt head for the spring cup, and it is the lowest due to the 4" drop springs, on a stock truck the ubolt ends would be lower). So the blazer is safe from this now. My jimmy has 15" wheels with 5.5" of side wall. If I had a flat on it (and if I had 2" blocks on it) there would be some suspension drag.

This being said, I have driven for 38 years and had one blow out on tires I knew were borderline (actually, worse than borderline, but I was a poor kid). My toys get maintained much better than any of my old cars ever did.

I think Gary (Katrina10) is right if you had a fully inflated tire on the otherside then the flat side MAY not hit (I think your pictures with the blocks simulate both tires being flat instead of one...)

You have to do what makes you feel safe. Good luck, Rg

Roger (raggedjim) your 3rd sentence is half right, what you put in (parentheses) is what I (ck5566) did to show when both rear tires are flat in a extreme circumstance for the clearance and or the Scrub line problem.

[midniteblues]

I made 1 1/4" blocks with my 4/6 ece kit. With the spacer for the track bar it made it more like 1 1/2".

This was the safest I felt using with my 15" wheels.
pretty sure that gave me about one inch off the ground with 2 flats. I noticed this when each one of my roller tires decided too blow out while reassembling my 67.

It's not the greatest idea but blocks have been used many times without much problems.

The biggest issue I would have is uneven roads or the dip or arch or the shoulder of the road when the flat tire happens.

[Katrina/10]

Now I wish I had taken a picture when I did my test. From what I saw, there is no way anything would drag with one flat, but two may be a different story. I'm going to leave mine the way it is, I'm not too worried about having two flat tires simultaneously.

[CG]

Ok went out to the barn today to look for some parts for a member and snapped a couple of pics of the chassis.

15 inch wheels, 4 inch springs, two inch blocks, and I believe ECE shock relocators.

Looks like just the blocks would make it really close, but add on the shock relocators and you are below the scrub.

[raggedjim]

Yeah, that's kinda spooky...