New cab mounting hardware - The 1947 - Present Chevrolet & GMC Truck Message Board Network

D13 · 10-01-2008, 07:05 AM

I have an 84 running chassis. I think I've found a 86 cab for it. The problem I have is cab mounting. I'd like to put the PST polygraphite cab mounts on it, but they require reuse of your old hardware. Since I have a bare cab and chassis I don't have the cups, sleeves or bolts. LMC will sell me the bolts as part of the mounting kit, but I really don't want the rubber body mounts. Does anyone sell the bolts seperate? And am I basicaly on a j-yard search for cups and sleeves? Or am I missing something? Thanks!

**old Rusty C10** · 10-01-2008, 10:34 AM

you can use grade eight bolts from any hardware store the cups and sleeves youd have to buy elsewhere
do you have pics of the cups you need?

D13 · 10-01-2008, 10:54 AM

No, I'd have to disassemble one of my complete trucks for that, and I'm not quite up for it. Any guesses on the bolt size? I want to say someone said 1/2" x 3 1/2". Are all the cab and rad support bolts the same?

D13 · 10-07-2008, 05:27 AM

Bolt size anyone? Cup and sleeve source? Donations?

bigblock73 · 10-07-2008, 07:07 AM

If you get the PST kit, all you need are the bolts. My PST kit came with everything except the bolts. I have a set of bolts that I am keeping for the cab swap on my 77, but can measure them for you late tonight when I get home.

**old Rusty C10** · 10-07-2008, 10:48 AM

lemme look downstairs how many bolts do you need?

bigblock73 · 10-07-2008, 10:53 AM

There are 4 for the cab

**old Rusty C10** · 10-07-2008, 11:12 AM

jeff the bolts themselves are the same between the two cab styles right?

bigblock73 · 10-07-2008, 12:14 PM

They should be, unless they went to metric sometime in the 80's

D13 · 10-07-2008, 01:39 PM

Ah, I revisited the PST site and see they include washers and sleeves. The 'must reuse existing hardware' is what threw me. I found one cap on an old mount , it's a cup-shaped washer about 4" accross, seems to go on the top between the rubber and the cab. But it looks like the PST kit has new flat washers in it.
Assuming that the rad support uses the same, I'd need 6 bolts. If someone can get me the measurement it's probably cheaper to buy them locally then have them shipped.

Thanks, Roland

**old Rusty C10** · 10-07-2008, 08:51 PM

this is what i have in the basement.. im not sure if its from the 76 i had or the 81 thats also gone but hey pieces of it live on in the basement
i can prolly go down there again in the morning and measure the bolts for you

D13 · 10-08-2008, 04:17 PM

That would be great. THen I'll step up and buy the PST kit.

**old Rusty C10** · 10-08-2008, 07:49 PM

Bolt length ( including head 4")
Bolt shaft length3 1/2 "
bolt shaft width 1/2"
Head size 3/4"
Coarse thread 13 thread per inch

Id use grade 8 bolts personally

D13 · 10-09-2008, 06:54 AM

Many thanks!

bigblock73 · 10-09-2008, 08:21 AM

Theere are 2 different bolt lengths. I forgot to measure them last night, will do it tonight...promise.

**old Rusty C10** · 10-09-2008, 11:48 AM

Quote:

Originally Posted by D13

Many thanks!

hey thats what we are all here for

D13 · 10-14-2008, 01:03 PM

2 different bolts?

now I'm all confused again....

Prong · 10-14-2008, 03:39 PM

The rears will be longer than the fronts...

bigblock73 · 10-14-2008, 09:22 PM

OK, measured the ones off the 78 GMC cab I removed.

2 @ 6 3/4"
2 @ 4"

Hope this helps you on your way.

10-01-2008, 07:05 AM	#1
D13 Registered User Join Date: Feb 2007 Location: Memphis MI Posts: 1,851	New cab mounting hardware I have an 84 running chassis. I think I've found a 86 cab for it. The problem I have is cab mounting. I'd like to put the PST polygraphite cab mounts on it, but they require reuse of your old hardware. Since I have a bare cab and chassis I don't have the cups, sleeves or bolts. LMC will sell me the bolts as part of the mounting kit, but I really don't want the rubber body mounts. Does anyone sell the bolts seperate? And am I basicaly on a j-yard search for cups and sleeves? Or am I missing something? Thanks! __________________ 1987 2 ton 1982 250/TH350 beater in progress Dad's 1981 3/4 L6 3 on tree posi and no options, awaiting restoration or scrapping Plus a mess o' tractors

10-01-2008, 10:34 AM	#2
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,313	Re: New cab mounting hardware you can use grade eight bolts from any hardware store the cups and sleeves youd have to buy elsewhere do you have pics of the cups you need? __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

10-01-2008, 10:54 AM	#3
D13 Registered User Join Date: Feb 2007 Location: Memphis MI Posts: 1,851	Re: New cab mounting hardware No, I'd have to disassemble one of my complete trucks for that, and I'm not quite up for it. Any guesses on the bolt size? I want to say someone said 1/2" x 3 1/2". Are all the cab and rad support bolts the same? __________________ 1987 2 ton 1982 250/TH350 beater in progress Dad's 1981 3/4 L6 3 on tree posi and no options, awaiting restoration or scrapping Plus a mess o' tractors

10-07-2008, 05:27 AM	#4
D13 Registered User Join Date: Feb 2007 Location: Memphis MI Posts: 1,851	Re: New cab mounting hardware Bolt size anyone? Cup and sleeve source? Donations? __________________ 1987 2 ton 1982 250/TH350 beater in progress Dad's 1981 3/4 L6 3 on tree posi and no options, awaiting restoration or scrapping Plus a mess o' tractors

10-07-2008, 07:07 AM	#5
bigblock73 yeller Join Date: Oct 2001 Location: Twin Cities Posts: 13,824	Re: New cab mounting hardware If you get the PST kit, all you need are the bolts. My PST kit came with everything except the bolts. I have a set of bolts that I am keeping for the cab swap on my 77, but can measure them for you late tonight when I get home. __________________ Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale Last edited by bigblock73; 10-07-2008 at 07:08 AM.

10-07-2008, 10:48 AM	#6
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,313	Re: New cab mounting hardware lemme look downstairs how many bolts do you need? __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

10-07-2008, 10:53 AM	#7
bigblock73 yeller Join Date: Oct 2001 Location: Twin Cities Posts: 13,824	Re: New cab mounting hardware There are 4 for the cab __________________ Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale

10-07-2008, 11:12 AM	#8
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,313	Re: New cab mounting hardware jeff the bolts themselves are the same between the two cab styles right? __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

10-07-2008, 12:14 PM	#9
bigblock73 yeller Join Date: Oct 2001 Location: Twin Cities Posts: 13,824	Re: New cab mounting hardware They should be, unless they went to metric sometime in the 80's __________________ Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale Last edited by bigblock73; 10-07-2008 at 12:14 PM.

10-07-2008, 01:39 PM	#10
D13 Registered User Join Date: Feb 2007 Location: Memphis MI Posts: 1,851	Re: New cab mounting hardware Ah, I revisited the PST site and see they include washers and sleeves. The 'must reuse existing hardware' is what threw me. I found one cap on an old mount , it's a cup-shaped washer about 4" accross, seems to go on the top between the rubber and the cab. But it looks like the PST kit has new flat washers in it. Assuming that the rad support uses the same, I'd need 6 bolts. If someone can get me the measurement it's probably cheaper to buy them locally then have them shipped. Thanks, Roland __________________ 1987 2 ton 1982 250/TH350 beater in progress Dad's 1981 3/4 L6 3 on tree posi and no options, awaiting restoration or scrapping Plus a mess o' tractors

10-07-2008, 08:51 PM	#11
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,313	Re: New cab mounting hardware this is what i have in the basement.. im not sure if its from the 76 i had or the 81 thats also gone but hey pieces of it live on in the basement i can prolly go down there again in the morning and measure the bolts for you Attached Images __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

10-08-2008, 04:17 PM	#12
D13 Registered User Join Date: Feb 2007 Location: Memphis MI Posts: 1,851	Re: New cab mounting hardware That would be great. THen I'll step up and buy the PST kit. __________________ 1987 2 ton 1982 250/TH350 beater in progress Dad's 1981 3/4 L6 3 on tree posi and no options, awaiting restoration or scrapping Plus a mess o' tractors

10-08-2008, 07:49 PM	#13
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,313	Re: New cab mounting hardware Bolt length ( including head 4") Bolt shaft length3 1/2 " bolt shaft width 1/2" Head size 3/4" Coarse thread 13 thread per inch Id use grade 8 bolts personally __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

10-09-2008, 06:54 AM	#14
D13 Registered User Join Date: Feb 2007 Location: Memphis MI Posts: 1,851	Re: New cab mounting hardware Many thanks! __________________ 1987 2 ton 1982 250/TH350 beater in progress Dad's 1981 3/4 L6 3 on tree posi and no options, awaiting restoration or scrapping Plus a mess o' tractors

10-09-2008, 08:21 AM	#15
bigblock73 yeller Join Date: Oct 2001 Location: Twin Cities Posts: 13,824	Re: New cab mounting hardware Theere are 2 different bolt lengths. I forgot to measure them last night, will do it tonight...promise. __________________ Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale



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10-14-2008, 01:03 PM	#17
D13 Registered User Join Date: Feb 2007 Location: Memphis MI Posts: 1,851	Re: New cab mounting hardware 2 different bolts? now I'm all confused again.... __________________ 1987 2 ton 1982 250/TH350 beater in progress Dad's 1981 3/4 L6 3 on tree posi and no options, awaiting restoration or scrapping Plus a mess o' tractors

10-14-2008, 03:39 PM	#18
Prong Registered User Join Date: May 2007 Location: CO Posts: 475	Re: New cab mounting hardware The rears will be longer than the fronts...

10-14-2008, 09:22 PM	#19
bigblock73 yeller Join Date: Oct 2001 Location: Twin Cities Posts: 13,824	Re: New cab mounting hardware OK, measured the ones off the 78 GMC cab I removed. 2 @ 6 3/4" 2 @ 4" Hope this helps you on your way. __________________ Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale

Register or Log In To remove these advertisements.