The 51 Chevrolet was just too low and when it went over a bump the differential would hit the body causing a terrible noise. Sometimes the choice has to be function over form. The new blocks raised the rear a strong inch.
Here is the original spacer that was on the vehicle.
Here is the new spacer in the box before install. This raises the vehicle by a little more than an inch.
Because we are installing a shorter block, we use threads higher up on the spring plate u-bolts. These threads are typically worn and rusted so we like to run a threading die over them to help rejuvenate them. This also helps prevent galling when installing the nuts. It is always a good idea to replace the u-bolts especially on trucks.
The new spacer blocks has a slightly larger pin that aligns the springs with the axle. We drill out the hole and the spacers install nicely.
An overall vehicle view at the new height.
A close up of the new height.
Function over form on this 51 Chevy still looks good.