need advice on angle shims

[gmcjimmy4x4]

Im getting rid of the old blocks and putting in new springs.Should i add them to the spring pack. Or can i just put them under the springs with the positioning oin. Somebody also suggested welding them in. Id like to do it right this time. The combination of blocks and 2 shims failed completely the first time.

 

[Citizen Rider]

attach the to the bottom of the spring pack with a new spring centering pin.

 

[gmcjimmy4x4]

Would the new pin be the same? Why new?

 

[ryan22re]

The old one will likely break or strip out.

Plus it's kind of like re-using u-bolts. A risky proposition.

The new pin would probably have to be longer. A local spring shop will have new pins, or you could use allen head bolts (grade 8 or 12.9 if metric).

 

[gmcjimmy4x4]

Actually im the springs im puttin on are new. They will eliminate the need for the old blocks.

 

[ryan22re]

But you'll need a shim right?

Set up the truck with the new springs, check the driveline angles and then go from there. If you need a shim, I (and others) recommend bolting it to the spring pack. You will probably need new center pins as the old ones may be too short to bolt to the shim to the spring pack.

 

[Citizen Rider]

your problem is if the centering pins are long enough or not. Most likely, they arent long enough. I took some grade 8 bolts, stuck the threaded part into a drill, and spun the drill with the head on a spinning bench grinder. Rounded it out nicely. And never gotta worry about bending them.

 

[big dan]

yes bolt it into the spring pack. I used bolts too cause the only centering pins I could find where way to small so I got some 3/8 bolts and rounded the heads of them.

 

[gmcjimmy4x4]

Went to a local suspension shop today and they made me a new set of u-bolts. They also had all different sizes of centering pins for about $3 each. Now just have to figure out how much angle shims to add. Does anyone no how large of angle is available? And is aluminum ok. where is best place to get them?