[89suburban350]

do you have to do the full drop specified on a lowering block kit or can you lower it just right where you need it?

 

[collinsperformance]

if you shave the block you will get less drop but the block is a certian thickness and that is what the drop will do. you can install a drop shackle and get some drop as well....mike

 

[89suburban350]

oh ok then.. thanks

 

[tbplus10]

you can install a drop shackle and get some drop as well....mike

IMO a drop shackle would be better. Blocks have a bad habit of applying a lot of leverage on the springs when you start or stop (axle wrap). If you like to take off fast you'll notice it even more as a thumping or binding feeling coupled with a loss of traction.
Replacement shackles dont have this negative side effect.