Core Support Mounts - The 1947 - Present Chevrolet & GMC Truck Message Board Network

tdangle · 07-30-2019, 02:51 PM

I have changed out the 4 body support mounts, but not the core support. They don't seem to be in too bad of shape. My fender and hood stuff line up pretty good for a 50 year old truck. Just wondering how much of a difference I would see with new core support mounts

Southpaw69 · 07-30-2019, 11:40 PM

Maybe no difference. If you did the other 4, the core support ones aren't much different. You'll just have to pull the radiator. Now you have all new and one less thing to worry about.

**71CHEVYSHORTBED402** · 07-31-2019, 01:20 AM

I'd replace if possible. Surprised yours are decent at all. Mine were about shot (140K). Always garaged, but dry weather can be hard on rubber.

**'68OrangeSunshine** · 07-31-2019, 01:35 AM

There was a slight design change in the mount hole sizes /types on the 67-68 vs 70 - 72 Model Years. I put an off-the-shelf parts kit from a well known vendor who shall be nameless, [but their initials are LMC] and it wasn't a perfect fit. Rather than go thru exchange hell - - even if the right stuff was available -- I just made what I had fit whatever was there with a BFH and brute force.
So there's a grey area where a 69 or early MY 70 might have 67-68 style mounts.
When I built my engine and did some restores and upgrades to the cab and frame, back during 2002 - 2005, I think only the Later style was offered. One size fits all was their sales philosophy. Hopefully the Market has gotten more sophisticated since.

tdangle · 08-01-2019, 10:21 AM

Mine is an early 70 actually built in Dec 69. Gaps all seem to line up which I would think would be an issue if they were compressed. Just a pain to replace so I would just as soon put it off until I'm doing something else like an engine swap.

07-30-2019, 02:51 PM	#1
tdangle Registered User Join Date: Mar 2005 Location: Jurupa Valley, Ca Posts: 1,211	Core Support Mounts I have changed out the 4 body support mounts, but not the core support. They don't seem to be in too bad of shape. My fender and hood stuff line up pretty good for a 50 year old truck. Just wondering how much of a difference I would see with new core support mounts __________________ Terry 1970 Custom Camper/C20 , GM Crate 350/7004R, Dana 60, factory AC

07-30-2019, 11:40 PM	#2
Southpaw69 Registered User Join Date: Jan 2018 Location: Modesto, CA Posts: 92	Re: Core Support Mounts Maybe no difference. If you did the other 4, the core support ones aren't much different. You'll just have to pull the radiator. Now you have all new and one less thing to worry about.

07-31-2019, 01:20 AM	#3
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,333	Re: Core Support Mounts I'd replace if possible. Surprised yours are decent at all. Mine were about shot (140K). Always garaged, but dry weather can be hard on rubber. __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025

07-31-2019, 01:35 AM	#4
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,536	Re: Core Support Mounts There was a slight design change in the mount hole sizes /types on the 67-68 vs 70 - 72 Model Years. I put an off-the-shelf parts kit from a well known vendor who shall be nameless, [but their initials are LMC] and it wasn't a perfect fit. Rather than go thru exchange hell - - even if the right stuff was available -- I just made what I had fit whatever was there with a BFH and brute force. So there's a grey area where a 69 or early MY 70 might have 67-68 style mounts. When I built my engine and did some restores and upgrades to the cab and frame, back during 2002 - 2005, I think only the Later style was offered. One size fits all was their sales philosophy. Hopefully the Market has gotten more sophisticated since. __________________ Every 25 years I like to rebuild that 292, whether it needs it or not.

08-01-2019, 10:21 AM	#5
tdangle Registered User Join Date: Mar 2005 Location: Jurupa Valley, Ca Posts: 1,211	Re: Core Support Mounts Mine is an early 70 actually built in Dec 69. Gaps all seem to line up which I would think would be an issue if they were compressed. Just a pain to replace so I would just as soon put it off until I'm doing something else like an engine swap. __________________ Terry 1970 Custom Camper/C20 , GM Crate 350/7004R, Dana 60, factory AC



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