Radiator mount support - The 1947 - Present Chevrolet & GMC Truck Message Board Network

freds · 12-24-2020, 12:31 AM

Hi,
In the final stage putting together the my 1967 Chevy c10 pickup, and have run into a problem. the radiator mount support mount holes are way larger than the bolts, the mounting holes dementions is ( 1" 3/16 diameter) and the mounting bolts is ( 7/16 ) lots of play. I've received the mounting bolt kit for that year. further reviewing shows the 1969 kit has a rubber mount that goes directly into the hole and seat tightly in the hole ( no give while in the hole).
Has anybody experienced this problem and if so, how was it remedied ?.

MAC71Cheyenne · 12-24-2020, 10:34 AM

How about a rubber grommet you could slip in there and then slides the bolt through.
Most and good hardware store has them.

**Grumpy old man** · 12-24-2020, 01:12 PM

You have to use the earlier core support bushings on the 67's

https://www.classicparts.com/1960-68...yABEgJnZvD_BwE

https://www.youtube.com/watch?v=vMAwVrGpWm0

**Boog** · 12-24-2020, 01:23 PM

The over sized hole you asked about is for side to side adjustment of the front end sheet metal alignment.

freds · 12-24-2020, 05:25 PM

Quote:

Originally Posted by Grumpy old man

You have to use the earlier core support bushings on the 67's

https://www.classicparts.com/1960-68...yABEgJnZvD_BwE

https://www.youtube.com/watch?v=vMAwVrGpWm0

thanks, I did purchase the kit you mentioned which is the original kit. I'v also watched the second "youtub" address that you send me real closely focused-in, and you can clearly see that the mounting hole is for a " 7/16 " bolt close tolarance. were as my mount hole is " 1-3/16 diameter ". I'm thinking of using the rubber bushing for a 1969 which is cone shaped and will fit tightly into the hole or make a metal bush to seat in the hole. thanks a lot

freds · 12-24-2020, 05:58 PM

Quote:

Originally Posted by MAC71Cheyenne

How about a rubber grommet you could slip in there and then slides the bolt through.
Most and good hardware store has them.

thanks,
presently looking at that thought, but so far unable to find any strong grommet material. having to consider the bushing being used for the 1969 Chevy mounts. thanks

freds · 12-24-2020, 06:03 PM

Quote:

Originally Posted by Boog

The over sized hole you asked about is for side to side adjustment of the front end sheet metal alignment.

thanks for the info, I appreciate.

**OL SKOOL** · 12-25-2020, 08:59 AM

The 69-72 rad mount holes are larger and sit lower. The 67- 68 are smaller and sit higher. The top frame pics was a 70 the bottom pic was a 68.

**Boog** · 12-25-2020, 10:54 AM

That is why the cushions are different from 67-68 and 69-72.

12-24-2020, 12:31 AM	#1
freds Registered User Join Date: Aug 2017 Location: valloejo ca, Posts: 22	Radiator mount support Hi, In the final stage putting together the my 1967 Chevy c10 pickup, and have run into a problem. the radiator mount support mount holes are way larger than the bolts, the mounting holes dementions is ( 1" 3/16 diameter) and the mounting bolts is ( 7/16 ) lots of play. I've received the mounting bolt kit for that year. further reviewing shows the 1969 kit has a rubber mount that goes directly into the hole and seat tightly in the hole ( no give while in the hole). Has anybody experienced this problem and if so, how was it remedied ?.

12-24-2020, 10:34 AM	#2
MAC71Cheyenne Registered User Join Date: Aug 2020 Location: Mount Pleasant Iowa Posts: 303	Re: Radiator mount support How about a rubber grommet you could slip in there and then slides the bolt through. Most and good hardware store has them.

12-24-2020, 01:12 PM	#3
Grumpy old man Senior Member Join Date: Dec 2013 Location: Gods country East,Tn Posts: 8,545	Re: Radiator mount support You have to use the earlier core support bushings on the 67's https://www.classicparts.com/1960-68...yABEgJnZvD_BwE https://www.youtube.com/watch?v=vMAwVrGpWm0 Attached Images __________________ 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop

12-24-2020, 01:23 PM	#4
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,514	Re: Radiator mount support The over sized hole you asked about is for side to side adjustment of the front end sheet metal alignment. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross

12-25-2020, 08:59 AM	#8
OL SKOOL Registered User Join Date: Feb 2010 Location: rochelle il. Posts: 355	Re: Radiator mount support The 69-72 rad mount holes are larger and sit lower. The 67- 68 are smaller and sit higher. The top frame pics was a 70 the bottom pic was a 68. Attached Images

12-25-2020, 10:54 AM	#9
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,514	Re: Radiator mount support That is why the cushions are different from 67-68 and 69-72. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross

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