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Old 04-24-2008, 04:16 AM   #1
Free88
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Question 91 Chevy cab mounts

Well I went to change the cab mounts on the wifes 91 Silverado today and to my surprise the mount was right through the frame support. Does anyone have a good fix for this or a thread explaining what to do? I was thinking of cutting a piece of plate and drilling i to fit the bushing and mount it from underneath. Is this a good idea or what? Thanks for the help in advance.
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Old 04-24-2008, 04:21 AM   #2
ed2552
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Re: 91 Chevy cab mounts

It is rusted through?
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Old 04-24-2008, 05:13 AM   #3
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Re: 91 Chevy cab mounts

ya, the mount drops through the frame support.
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Old 04-24-2008, 01:41 PM   #4
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Re: 91 Chevy cab mounts

Your idea will work... for a while... until it rusts out around your plate. The metal for these things isn't real thick and they seem to rust easy. The best way would be to cut the whole cab mount bracket off and weld on a good one. I don't know why truck manufacturers have decided to weld them on instead of bolting them on like they used to.
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Old 04-24-2008, 03:52 PM   #5
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Re: 91 Chevy cab mounts

Quote:
Originally Posted by Storm Chaser View Post
Your idea will work... for a while... until it rusts out around your plate. The metal for these things isn't real thick and they seem to rust easy. The best way would be to cut the whole cab mount bracket off and weld on a good one. I don't know why truck manufacturers have decided to weld them on instead of bolting them on like they used to.
Could probably bolt one on, just drill holes and use grade 8 hardware
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72' GMC C2500, 350, TH400(?), Dana 60
'67 K10 4-spd., 305, SM465, Dana 44, 12 Bolt, RUST!
'67 C20, 250 I6, 4 speed, LWB, Eaton HO-52, Rear Coil Springs
'65 C60 292, 4 spd, 2 spd Rearend, 15' Grain Box, MINT!
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Old 04-24-2008, 03:54 PM   #6
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Re: 91 Chevy cab mounts

give it a decent coat of paint, help prevent rust
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72' GMC C2500, 350, TH400(?), Dana 60
'67 K10 4-spd., 305, SM465, Dana 44, 12 Bolt, RUST!
'67 C20, 250 I6, 4 speed, LWB, Eaton HO-52, Rear Coil Springs
'65 C60 292, 4 spd, 2 spd Rearend, 15' Grain Box, MINT!
2003 Pontiac Bonneville SSEi, 3.8L S/C, DD
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Old 04-25-2008, 02:02 PM   #7
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Re: 91 Chevy cab mounts

Quote:
Could probably bolt one on, just drill holes and use grade 8 hardware
You could, except this bodystyle doesn't have flanges to bolt to like the previous body style (the way the riveted). This style, the body mount brackets weld to the frame at a right angle with no flanges.
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1988 R2500 Crew Cab
Immediate plans- get it running!
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Dually conversion with shackle flip-n-switch
4x4 conversion with 52" springs
Maybe some new body panels
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Old 04-25-2008, 11:05 PM   #8
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Re: 91 Chevy cab mounts

Quote:
Originally Posted by Storm Chaser View Post
You could, except this bodystyle doesn't have flanges to bolt to like the previous body style (the way the riveted). This style, the body mount brackets weld to the frame at a right angle with no flanges.
I didn't know that, thx for the info
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72' GMC C2500, 350, TH400(?), Dana 60
'67 K10 4-spd., 305, SM465, Dana 44, 12 Bolt, RUST!
'67 C20, 250 I6, 4 speed, LWB, Eaton HO-52, Rear Coil Springs
'65 C60 292, 4 spd, 2 spd Rearend, 15' Grain Box, MINT!
2003 Pontiac Bonneville SSEi, 3.8L S/C, DD
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Old 04-26-2008, 02:44 AM   #9
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Re: 91 Chevy cab mounts

I had the same problem so I had these made to sit on top of the stock frame support..


Turns out my frame was bad so I did not need them after the new section of frame was welded on..

They are 1/4 thick and could be cut to fit for the under side if need be..If you want I will let you have them for whatever it costs to ship to you..

I still think the best way would be to replace the whole frame support..

Let me know and good luck......
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Old 04-26-2008, 03:18 AM   #10
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Re: 91 Chevy cab mounts

I got that exact tool kit for x-mas last year! lol, small world
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72' GMC C2500, 350, TH400(?), Dana 60
'67 K10 4-spd., 305, SM465, Dana 44, 12 Bolt, RUST!
'67 C20, 250 I6, 4 speed, LWB, Eaton HO-52, Rear Coil Springs
'65 C60 292, 4 spd, 2 spd Rearend, 15' Grain Box, MINT!
2003 Pontiac Bonneville SSEi, 3.8L S/C, DD
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Old 04-26-2008, 03:20 AM   #11
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Re: 91 Chevy cab mounts

Quote:
Originally Posted by ed2552 View Post
I got that exact tool kit for x-mas last year! lol, small world
Thats how I got mine too........
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Old 04-27-2008, 04:05 AM   #12
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Re: 91 Chevy cab mounts

I haven't owned my 90 for all that long and obviously didn't look it over all that well. When I had the fuel pump replaced, the mechanic pointed out that someone had slid a piece of 2x4 in as a cab mount. The longer I have this truck the more I'm glad I haven't got rid of the 71 yet. I guess I'll have to adapt something.
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Old 05-29-2008, 05:29 PM   #13
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Re: 91 Chevy cab mounts

i send out that money order for them cab mount checked on the status today and still outstanding status so when you get it please send them to me
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