4wd rear cab mount Updated w/pics

[jdl71]

Anyone have a good pic of this? I ordered one from Chris but it looks like there's a separate upper part I don't have and didn't see listed on the site. Looks like 2 stacked donuts below the cab and above the cross brace.

[jdl71]

The FSM shows a different mount for 1/2 ton and 3/4 and 1 ton, but says each respectively is for both C and K series. Anyone have any insight on this?

[KY..Rob]

What year is your truck? All your body mounts should match your frame.

[jdl71]

It's a 78.

[jdl71]

Here's the factory mount:



Here's what I ordered from the site:



It looks to me like there should be a couple of more bushings. Doesn't seem like it's quite long enough.

[1979C20]

What you have is the upper mount. That goes above the cross member. You didnt get the lowers, it seems.

[HAULIN IT]

Jdl, What you have on your truck seems to be a "Mickey Mouse" job...when the upper bushing collapsed, someone stuck the hockey puck looking thing in there (one just below the crossmember) to take up the extra space on the bolt, maybe to keep in cab from rattling?
Chris can get you straightened out on the details, however the double Michelin man one is the upper (your is just VERY collapsed), the lower in your picture of the new parts looks to be a front lower, not a rear lower...'78 rear lower should look like your old one minus the "hockey puck" on top of it.   

[jdl71]

Jdl, What you have on your truck seems to be a "Mickey Mouse" job...when the upper bushing collapsed, someone stuck the hockey puck looking thing in there (one just below the crossmember) to take up the extra space on the bolt, maybe to keep in cab from rattling?
Chris can get you straightened out on the details, however the double Michelin man one is the upper (your is just VERY collapsed), the lower in your picture of the new parts looks to be a front lower, not a rear lower...'78 rear lower should look like your old one minus the "hockey puck" on top of it.   

Both sides are like that so I figured that's the way it was supposed to be. I ordered a front and rear and the front is about the same except only 1 "Michelen Man". It was also different that the factory mount, but it was the proper height once I figured out how it goes in there.

If I understand properly the 2 donuts (or michelen men) go between the cab floor and the crossmember, and the cone shaped piece goes under?

[jdl71]

What you have is the upper mount. That goes above the cross member. You didnt get the lowers, it seems.

All of that goes above the crossmember?

[HAULIN IT]

All of that goes above the crossmember?

No! Definitely not. The double one only goes above the crossmember. I just don't recall seeing any short cone lower mounts on the rear. The parts below the crossmember are just Two parts right..."hockey puck" & odd shaped one, NOT Three, correct? What do your front lowers look like? I have to say, I'm not well versed in the different years
('81-up?), 1/2 ton, 3/4 ton, ect. My recollection was really a 3 bump upper & a long more hour-glass looking lower...the ones I'm thinking of were definitely 1/2 ton 'pre '80 trucks. Maybe that is the difference in the 1/2 & 3/4 tons? 
Where's Chris, Vile & the guys in the "know" at a time like this?  Lorne

[KY..Rob]

Heres a pick of my 75 SWB K10. I have the polly mounts, but should be the same principal. (Haulin It) and (1979c20) are all over this one.

[HAULIN IT]

What I'm making of this is that the aftermarket replacement items are different then the originals. If the spacing is correct from the frame up in all 6 areas then the shape & number of lumps (assuming it can carry the weight), length of the bottom area & bolt length aren't relevent.
I believe that is what you have going on, I would like Chris to verify that this is the case & not the wrong parts for your application. Lorne

[KY..Rob]

What I'm making of this is that the aftermarket replacement items are different then the originals. If the spacing is correct from the frame up in all 6 areas then the shape & number of lumps (assuming it can carry the weight), length of the bottom area & bolt length aren't relevent.
I believe that is what you have going on, I would like Chris to verify that this is the case & not the wrong parts for your application. Lorne

Lorne..I believe you are correct, and I don't think there is a difference in 1/2 or 3/4 ton. I think there is a slight difference in the 2x4 vs 4x4 in height due to the T-Case clearance.

jdl71..I will post the height of all the mounts in the morning.

[1979C20]

Is the last picture you posted 2 pieces or is that just one piece?

[jdl71]

The parts below the crossmember are just Two parts right..."hockey puck" & odd shaped one, NOT Three, correct?

That's correct

What do your front lowers look like?

Basically the same except only one donut piece.