C3 motor mount question
Thread Starter
4th Gear
Joined: Oct 2013
Posts: 4
Likes: 0
C3 motor mount question
I'm restoring a 78 Corvette for a customer. We installed new Energy Suspension motor mounts and now the fan hits the top of the shroud.
Are Corvette mounts different than garden variety Chevrolet motor mounts?
Do the Corvette mounts mount the engine lower?
Any knowledgable advice appreciated.
Don
Are Corvette mounts different than garden variety Chevrolet motor mounts?
Do the Corvette mounts mount the engine lower?
Any knowledgable advice appreciated.
Don
Race Director
Joined: May 2006
Posts: 18,729
Likes: 2,581
If you look at a site such as Napa the 70 corvette uses a different mount than the 70 chevelle but the 70 corvette mount is the same as the 78 corvette. I would check with energy suspension they also have two different mounts based on application,
Pro
Joined: Oct 2009
Posts: 523
Likes: 4
From: Calgary Alberta
I'm restoring a 78 Corvette for a customer. We installed new Energy Suspension motor mounts and now the fan hits the top of the shroud.
Are Corvette mounts different than garden variety Chevrolet motor mounts?
Do the Corvette mounts mount the engine lower?
Any knowledgable advice appreciated.
Don
Are Corvette mounts different than garden variety Chevrolet motor mounts?
Do the Corvette mounts mount the engine lower?
Any knowledgable advice appreciated.
Don
The mounts are referred to as long or short motor mounts.
I have the short mounts in my 77 and everything fits perfectly with no problems.
Although, I should state that I have a Dewitts aluminum rad with the dual Spal fans so there is no stock fan and no stock fan shroud.
Hope that helps!
Thread Starter
4th Gear
Joined: Oct 2013
Posts: 4
Likes: 0
I'll buy another set of mounts and install them if that's the solution. I'm just trying to find out if the mounts are the problem.
Thanks for the responses.
Burning Brakes
Joined: Jul 2009
Posts: 912
Likes: 47
From: Kansas City MO
Here is what I installed on my 71. According to their listing, they should fit 63-82?
http://www.parts123.com/parts123/yb....Z5Z5Z50000050G
http://www.parts123.com/parts123/yb....Z5Z5Z50000050G
Race Director
Joined: May 2006
Posts: 18,729
Likes: 2,581
No Listing
http://www.energysuspensionparts.com...+Corvette+1978
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Pro
Joined: Oct 2009
Posts: 523
Likes: 4
From: Calgary Alberta
The link below is exactly what I purchased from Summit and they fit on my 77 with no problems. Are they the same product that you purchased?
http://www.summitracing.com/int/part...114g/overview/
Summit lists them as suitable for 1963 to 1983 corvette with a GEN 1 Small block chevy. Pay attention to the "notes" in the description.
Are the listed dimensions for the "short wide" mounts the same as your original motor mounts? They should be.
Le Mans Master
Joined: Feb 1999
Posts: 8,351
Likes: 75
From: Tampa Bay FL
Wonderin' now if I got the right motor mounts for my recent rebuild. When I installed everything, the fan just wiped at the top of the stock fan shroud. I had to release the shroud from its two points where it passed through the radiator support; the two tabs still 'sit' in the support but do not pass through the slots.
Thread Starter
4th Gear
Joined: Oct 2013
Posts: 4
Likes: 0
Hi DRD57,
The link below is exactly what I purchased from Summit and they fit on my 77 with no problems. Are they the same product that you purchased?
http://www.summitracing.com/int/part...114g/overview/
Summit lists them as suitable for 1963 to 1983 corvette with a GEN 1 Small block chevy. Pay attention to the "notes" in the description.
Are the listed dimensions for the "short wide" mounts the same as your original motor mounts? They should be.
The link below is exactly what I purchased from Summit and they fit on my 77 with no problems. Are they the same product that you purchased?
http://www.summitracing.com/int/part...114g/overview/
Summit lists them as suitable for 1963 to 1983 corvette with a GEN 1 Small block chevy. Pay attention to the "notes" in the description.
Are the listed dimensions for the "short wide" mounts the same as your original motor mounts? They should be.
The notes read the same:
"Notes:Kit includes early style "short and wide" motor mount that measures 2 5/8 in. between the ears and 1 3/4 in. tall to the center of the through bolt hole and polyurethane mount for automatic transmissions."
Thread Starter
4th Gear
Joined: Oct 2013
Posts: 4
Likes: 0
That is a possibility. I'll measure the one that's in it and the one I took out to see if there's a difference. I used the Energy Suspension transmission mount too.
Burning Brakes
Joined: May 2007
Posts: 1,150
Likes: 14
From: LaMoille Illinois
with the preload plates (flat steel plates supplied with new mounts) it raises the motor and trans about an 1/8-3/16ths of an inch or so, found this out when i swapped them out in my 71 chevelle and was hitting fan shroud!!!
lay a stock motor mount and a ES mount with the plate under it flat on a table and you can see the height differance!!!
lay a stock motor mount and a ES mount with the plate under it flat on a table and you can see the height differance!!!