Energy Suspension poly mounts
Thread Starter
Tech Contributor
Joined: Aug 1999
Posts: 15,179
Likes: 3,999
From: Connecticut, USA
Energy Suspension poly mounts
Hopefully I'll save someone some time and trouble. I ordered the ES poly eng & tranny mount kit from Summit. Last year I found out the ES tranny mount for a manual car doesn't fit. The mount for a TH400 was supposed to fit BUT- same mount,same problem it's .300" taller then the stock mounts.
ES #3.1108 doesn't fit TH400,Muncie, or BW ST-10 corvettes regardless what the Summit or the ES web site says. The ES customer service dept confirmed it fits everything BUT Corvette!
why should parts for corvettes fit now anyway,they haven't for some time!
Gary
ES #3.1108 doesn't fit TH400,Muncie, or BW ST-10 corvettes regardless what the Summit or the ES web site says. The ES customer service dept confirmed it fits everything BUT Corvette!
why should parts for corvettes fit now anyway,they haven't for some time!
Gary
Melting Slicks
Joined: Nov 2001
Posts: 2,668
Likes: 43
From: Eastern US XX
Originally Posted by gtr1999
Hopefully I'll save someone some time and trouble. I ordered the ES poly eng & tranny mount kit from Summit. Last year I found out the ES tranny mount for a manual car doesn't fit. The mount for a TH400 was supposed to fit BUT- same mount,same problem it's .300" taller then the stock mounts.
ES #3.1108 doesn't fit TH400,Muncie, or BW ST-10 corvettes regardless what the Summit or the ES web site says. The ES customer service dept confirmed it fits everything BUT Corvette!
why should parts for corvettes fit now anyway,they haven't for some time!
Gary
ES #3.1108 doesn't fit TH400,Muncie, or BW ST-10 corvettes regardless what the Summit or the ES web site says. The ES customer service dept confirmed it fits everything BUT Corvette!
why should parts for corvettes fit now anyway,they haven't for some time!
Gary
Thread Starter
Tech Contributor
Joined: Aug 1999
Posts: 15,179
Likes: 3,999
From: Connecticut, USA
Gentlemen,
I kid you not. I have the same tranny mount on my desk for over year now that came in the kit. # 3.1108G- G = black.
Here's what I talking about. The mount on the right is an original 72 TH400 mount,middle is the ES mount, left is an original 75 BWST-10 mount. The bolt hole spread on the 2 original are slightly different.
Here is the 75 4 spd mount,1.788"
Here is the ES poly mount -called for both Th400 and 4 spd cars
When I measured the brand new ES mount and compared it to the TH400 it was .300" taller. I called ES and spoke to the customer service tech,don't recall his name, and he checked with someone else and they said NG on Corvette. last year I went to Prothane I believe that Jegs uses and they had the 4 spd poly mount that fit. I called Prothane today and I'm waiting on a return call.
I kid you not. I have the same tranny mount on my desk for over year now that came in the kit. # 3.1108G- G = black.
Here's what I talking about. The mount on the right is an original 72 TH400 mount,middle is the ES mount, left is an original 75 BWST-10 mount. The bolt hole spread on the 2 original are slightly different.
Here is the 75 4 spd mount,1.788"
Here is the ES poly mount -called for both Th400 and 4 spd cars
When I measured the brand new ES mount and compared it to the TH400 it was .300" taller. I called ES and spoke to the customer service tech,don't recall his name, and he checked with someone else and they said NG on Corvette. last year I went to Prothane I believe that Jegs uses and they had the 4 spd poly mount that fit. I called Prothane today and I'm waiting on a return call.
Thread Starter
Tech Contributor
Joined: Aug 1999
Posts: 15,179
Likes: 3,999
From: Connecticut, USA
Gentlemen,
I kid you not. I have the same tranny mount on my desk for over year now that came in the kit. # 3.1108G- G = black.
Here's what I talking about. The mount on the right is an original 72 TH400 mount,middle is the ES mount, left is an original 75 BWST-10 mount. The bolt hole spread on the 2 original are slightly different.
The 75 4 spd mount is 1.788"
Here is the ES poly mount -called for both Th400 and 4 spd cars
When I measured the brand new ES mount and compared it to the TH400 it was .300" taller. I called ES and spoke to the customer service tech,don't recall his name, and he checked with someone else and they said NG on Corvette. Last year when I had th eproblem with Es on the 4 spd car I went to Prothane. I believe that Jegs uses them and they had the 4 spd poly mount that fit. I called Prothane today and I'm waiting on a return call.
I kid you not. I have the same tranny mount on my desk for over year now that came in the kit. # 3.1108G- G = black.
Here's what I talking about. The mount on the right is an original 72 TH400 mount,middle is the ES mount, left is an original 75 BWST-10 mount. The bolt hole spread on the 2 original are slightly different.
The 75 4 spd mount is 1.788"
Here is the ES poly mount -called for both Th400 and 4 spd cars
When I measured the brand new ES mount and compared it to the TH400 it was .300" taller. I called ES and spoke to the customer service tech,don't recall his name, and he checked with someone else and they said NG on Corvette. Last year when I had th eproblem with Es on the 4 spd car I went to Prothane. I believe that Jegs uses them and they had the 4 spd poly mount that fit. I called Prothane today and I'm waiting on a return call.
Last edited by gtr1999; Oct 20, 2004 at 05:16 PM.
Thread Starter
Tech Contributor
Joined: Aug 1999
Posts: 15,179
Likes: 3,999
From: Connecticut, USA
Gentlemen,
I kid you not. I have the same tranny mount on my desk for over year now that came in the kit. # 3.1108G- G = black.
Here's what I talking about. The mount on the right is an original 72 TH400 mount,middle is the ES mount, left is an original 75 BWST-10 mount. The bolt hole spread on the 2 original are slightly different.
The 75 4 spd mount is 1.788"
Here is the ES poly mount -called for both Th400 and 4 spd cars
When I measured the brand new ES mount and compared it to the TH400 it was .300" taller. I called ES and spoke to the customer service tech,don't recall his name, and he checked with someone else and they said NG on Corvette. last year I went to Prothane I believe that Jegs uses and they had the 4 spd poly mount that fit. I called Prothane today and I'm waiting on a return call.
I kid you not. I have the same tranny mount on my desk for over year now that came in the kit. # 3.1108G- G = black.
Here's what I talking about. The mount on the right is an original 72 TH400 mount,middle is the ES mount, left is an original 75 BWST-10 mount. The bolt hole spread on the 2 original are slightly different.
The 75 4 spd mount is 1.788"
Here is the ES poly mount -called for both Th400 and 4 spd cars
When I measured the brand new ES mount and compared it to the TH400 it was .300" taller. I called ES and spoke to the customer service tech,don't recall his name, and he checked with someone else and they said NG on Corvette. last year I went to Prothane I believe that Jegs uses and they had the 4 spd poly mount that fit. I called Prothane today and I'm waiting on a return call.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Thread Starter
Tech Contributor
Joined: Aug 1999
Posts: 15,179
Likes: 3,999
From: Connecticut, USA
Originally Posted by exdrag77
I have the ES mount from the kit on my TH400 in a '77 and no problems. It may be .3" taller but I don't see a problem with that. You should have the clearance in the tunnel for it.
Gary
Instructor
Joined: Apr 2004
Posts: 235
Likes: 0
From: Mansfield Ohio
At the counter at Summit I told them I needed a kit for a '77. They looked it up and gave me the complete kit which I used with no problems.
Since mine is on stands at this time changing TH400 shift points, thought I would snap a picture to prove they work.
I also can put my hand on top of the trans so plenty of clearance. Also worth noting that I run a 2.5" driveshaft with no clearance problems either. Of course, if your body is lower on the frame, that could affect the clearance.
Also, in the picture above that shows the calipers on the ES mount, that doesn't take into consideration the compression once on the car. The gap between the mount and the steel plate shown is closed completely which preloads the mount.
Since mine is on stands at this time changing TH400 shift points, thought I would snap a picture to prove they work.
I also can put my hand on top of the trans so plenty of clearance. Also worth noting that I run a 2.5" driveshaft with no clearance problems either. Of course, if your body is lower on the frame, that could affect the clearance.
Also, in the picture above that shows the calipers on the ES mount, that doesn't take into consideration the compression once on the car. The gap between the mount and the steel plate shown is closed completely which preloads the mount.
Last edited by exdrag77; Oct 21, 2004 at 02:33 PM.
Thread Starter
Tech Contributor
Joined: Aug 1999
Posts: 15,179
Likes: 3,999
From: Connecticut, USA
Thanks for the picture,it does help to see how yours fits. I was concerned about driveshaft alignment. Interesting to see how much it compresses under load too. The people at ES didn't mention any preload compression,didn't say much in fact other then it wasn't for Corvette. In my case I'm going to pass on them. I'm glad it worked out for you. The intent of this post was not to bash ES, but to inform other CF members of the potential problem I experienced so they can make up their mind. Your input diffinately helps with this process.
Gary
Gary
