My front cab mounts were pretty much gone when I bought the truck, so I am running a little blind.

I am making new ones from scratch. I am not looking for the suggestion that doing this is dumb. That, I know.

It seems to me, OEM design had two pieces of steel welded together...with the "bottom" piece having a 1" deep "channel" stamped into it...and this channel was where the mounting bolt went through the cab mount. My question is, is that right?

Every bit of that channel is gone on my truck, is why ask.

Question 2. All the AM cab mounts I can see on the internet don't seem to have the piece of steel which had the OEM channel. Now, the pics the AM people provide are not showing the bottom of the mount, so I could be wrong. It looks like they add an extra-beef 3"x3" plate on the top of the 1-piece mount, weld the plate to the longitudinal floor element, and call it good.

Question 2...am I right about the AM design not having the channel and the large piece of steel it was formed out of?

Question 3. You think the AM mounts account for that 1"? Making their main cab mount 1" lower? Or, are they punting on the 1" and letting the cab sit 1" lower?

Attached: a typical AM cab mount pic from the internet.

Thanks for looking,

Roy

 

Here you can see the lower steel piece, with channel, which I think AM designs don't have...it's #10604

 

I guess, I just answered my Question 1. Yes, the bottom metal had a channel where the bolt went.

 

What is AM?

 

Oops....sorry.

After-market.

 

Ah. I got both mounts from Mill Supply. Body shop only needed to replace the driver’s side. I’m not sure if the difference between the two matters. The aftermarket mount works perfectly fine.

 

Am I right...the AM mount doesn't have the OEM channel on the underside?

I am sure you're right...1" +/- ...not much of a deal.

 

Yes. Aftermarket. The truck is not here. I can look in a couple hours

 

Thanks. No hurry.

 

My factory and aftermarket mounts both look the same. There is no channel on my ‘89.

 

Thanks for the intel.

That makes it even odder. I was thinking many body elements ran a lot of years...even beyond front-clip changes.