Big 10 adventure!

[Katrina/10]

I didn't like the urethane cab mounts on my truck, switched them for rubber.

[rustyfive-seven]

awesome story! I just replaced my body mount bushings also, didn't add extra shims- body alignment came right back and doors closed better. I replace pin bushings too. nice truck!

[mcm1209]

Originally Posted by Katrina/10

I didn't like the urethane cab mounts on my truck, switched them for rubber.

What was it that you didn't like?

I never have ridden in a truck with poly mounts, this will be the first time. I asked opinions and the majority said to go with poly. So I.m just going to see how it rides. If i don't like it ill just get rubber.

[VWNate1]

Urethane mounts are great for suspension and engine tranny but when used to the body/frame interface they transfer a huge amount of NVH and also fatigue the sheet metal rapidly .

Do this with caution, few like the results and the off roaders discover torn floors before long .
'

[MikeB]

Originally Posted by VWNate1

Urethane mounts are great for suspension and engine tranny but when used to the body/frame interface they transfer a huge amount of NVH and also fatigue the sheet metal rapidly .

Do this with caution, few like the results and the off roaders discover torn floors before long .
'

Added poly cab mounts to a 69 C10 around 1995. My son has the truck now, and we've never had a problem that I know of. However, the floor is rust-free and it's got pretty smooth suspension. But maybe I should check it next time I visit him.

What's funny is I had installed real GM bushings, and they were already cracking and sagging after 3-4 years. Maybe they were VOS (very old stock).

[Katrina/10]

Originally Posted by mcm1209

What was it that you didn't like?

I never have ridden in a truck with poly mounts, this will be the first time. I asked opinions and the majority said to go with poly. So I.m just going to see how it rides. If i don't like it ill just get rubber.

Sorry, I didn't see your question about cab mounts. I put the poly on mine and as soon as I took a ride on the interstate the noise is the cab was much greater. I replaced them with rubber I got from LMC, and it was back to normal. LMC seems to be the only company offering rubber. Unfortunately, the core support mounts are already cracking.

[Corts60]

Originally Posted by Katrina/10

Sorry, I didn't see your question about cab mounts. I put the poly on mine and as soon as I took a ride on the interstate the noise is the cab was much greater. I replaced them with rubber I got from LMC, and it was back to normal. LMC seems to be the only company offering rubber. Unfortunately, the core support mounts are already cracking.

I also found the poly mounts were too stiff on my shortie square. It transmitted a lot of vibration to the cab. If I ever do it again, I would go with rubber for sure.

Beautiful truck!

[mcm1209]

Originally Posted by Katrina/10

Sorry, I didn't see your question about cab mounts. I put the poly on mine and as soon as I took a ride on the interstate the noise is the cab was much greater. I replaced them with rubber I got from LMC, and it was back to normal. LMC seems to be the only company offering rubber. Unfortunately, the core support mounts are already cracking.

So yeah!! I took a 20 min ride up the road to register the truck and did notice the truck felt "stiffer' and felt the road more.. I guess that's how I would describe it. Ill see how it does in the next couple weeks and make a decision. How old are the mounts that they are already cracking?

Thanks for the input.

[Katrina/10]

Originally Posted by mcm1209

So yeah!! I took a 20 min ride up the road to register the truck and did notice the truck felt "stiffer' and felt the road more.. I guess that's how I would describe it. Ill see how it does in the next couple weeks and make a decision. How old are the mounts that they are already cracking?

Thanks for the input.

The mounts that cracked are the core supports, less than a year old. They may have been a bad batch? The cab supports are fine.