Shock travel is unchanged with a lowering block in this application. The only relationship that changes with a lowering block is distance between the axle and the spring/body. Since the shock is mounted to the lower spring plate (not the axle) and the body, the motion range is unchanged... However, use of a different spring eye (as suggested) WILL change the motion range of the shock."daveSanborn" said:Something else to consider..... aside from all of the other usually discussed issues.... wheel hop, etc........ installing lowering blocks extends the distance between the spring pack mounted lower shock mount and the axle. In so doing the rear shocks should also be replaced as the effective motion range of the shock is now reduced by whatever the thickness of the block is.
As with anything else, there is a "right way" and a "cheaper way" to achieve results, but with lowering blocks the only result you are achieving is a visual one. Lowering blocks achieve the desired visual result at the expense of suspension design/operation.
BTW, unless the OP plans on driving through some local cornfields, his entire car should be much lower.
I do agree that springs are the "best" way to change ride height. However, for tweaks of 1 inch or less, blocks can be a reasonable alternative, despite their drawbacks.
I'd NEVER use a block greater than one inch. Of course, I don't believe in using wheel spacers either, but people do that every day too. :roulette