Body Mount Shims

[truckster]

I replaced my body mounts with new ones from Wes at Classic Heartbeat. I went from 3" spacers to stock height. When I reinstalled the front fenders I had to shim the front tub mounts by 3/8 on one side and 1/4 on the other side to get the gap between the fender and door even.

My question is about the other body mount bushings. How do I figure out how much to shim them? Do I split the difference?

[Spf79]

Originally Posted by truckster

I replaced my body mounts with new ones from Wes at Classic Heartbeat. I went from 3" spacers to stock height. When I reinstalled the front fenders I had to shim the front tub mounts by 3/8 on one side and 1/4 on the other side to get the gap between the fender and door even.

My question is about the other body mount bushings. How do I figure out how much to shim them? Do I split the difference?

I will have the same question soon, following along. I have the same mounts.

[A1971Blazer]

It looks like you should shim under the remainder enough to "table" (or close the gap I suppose) between the body and the mounts...

[truckster]

Thanks.

[hemi43]

These trucks were built with a +- tolerance of 1/4", so the number of shims at each point is irrelevant, so having more on one side is probably OK. What determines how much shim you need is the door gaps.

[truckster]

The door gaps are good now, and the body mounts are all torqued to spec, so I think I'm OK. Thanks again.

[k-nuts]

What torque specs did you use? also are the rear mounts (lower bushing) compressed a whole lot? See pics in recent post on body bushings
TIA

[truckster]

Originally Posted by k-nuts

What torque specs did you use? also are the rear mounts (lower bushing) compressed a whole lot? See pics in recent post on body bushings
TIA

I looked for the spec sheet I got from Wes in my file (which is really just a drawer in my toolbox) but I couldn't find it. I remember there was a range, and I believe I set my torque wrench at 45 ft-lbs for all but the radiator support bushings. You can see how much the bushings compressed in this pic.

[k-nuts]

Thanks!

[Toro]

Originally Posted by truckster

I looked for the spec sheet I got from Wes in my file (which is really just a drawer in my toolbox) but I couldn't find it. I remember there was a range, and I believe I set my torque wrench at 45 ft-lbs for all but the radiator support bushings. You can see how much the bushings compressed in this pic.

Here's a picture of the same mount on mine and it looks pretty much the same. There is a separate thread I started asking about this, and I'm relieved to see someone else's results. I tightened mine just enough until the center sleeve/bushing started to make contact with the washers on the upper and lower cushion. My kit came from GMC Pauls.