1967 L71 Transmission Mount Bracket Removal Help Needed
I am attempting to remove the transmission mount bracket on my 1967 L71. The bracket contains one horizontal bolt and nut, two vertical bolts which feed from the bottom into the mount and two bolts with nuts which feed from the top on each side of the bracket which holds the mount. My problem is when trying to remove the nuts on the bolts which hold the mount, the bolts spin. It looks like it is near impossible to get anything up to the head of the bolt to hold it. Thank in advance for all suggestions.
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Re: 1967 L71 Transmission Mount Bracket Removal Help Needed
Rick,
It sounds like you are referring to the shifter bracket not the tranny mount. The tranny has 4 7/16 bolts securing the tranny 2 into tranny and 2 into mount.
On the shifter mount I suggest a die grinder with a cutting wheel to cut off the head or the nut. Must be a lot of corrosion........? -
Re: 1967 L71 Transmission Mount Bracket Removal Help Needed
Hi Geno,
Thank you for your response. It is definitely the bracket which supports the rubber transmission mount. My problem is getting to the heads of the bolts which come from the top down. There just isn't any room to get a tool up there from the bottom of the car. There is no rust or corrosion issue.Comment
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Re: 1967 L71 Transmission Mount Bracket Removal Help Needed
Here are some photos for reference....
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Shifter mount and rubber trans mount.(ignore the flat spacer, only used for C3 Sidepipe cars)
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3-
4-
5-
6-
7-
Exactly which bolts are the trouble? If the ones with the heads facing the sky, you should be able to get a open-end wrench up there to hang on to.
8-
9-
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11-
12-
13-
Last edited by Richard M.; June 17, 2016, 04:30 PM.Comment
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Re: 1967 L71 Transmission Mount Bracket Removal Help Needed
Hi Richard,
Thank you for the great photo's. The bolts I am referring to are in your photo #11. I still have the shifter in place, although I have disconnected the rods. My thoughts are that I need to remove the shifter which should allow me access.
Thanks again,
RickComment
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Re: 1967 L71 Transmission Mount Bracket Removal Help Needed
Rick, Photos 8 & 9 (I just numbered them) show the top and bottom of the bolt on the left side. You should be able to get a wrench there to hold it, or maybe a short socket on a 3/8" breaker bar with a downward angle on the handle.
I don't think removing the shifter will help much, plus it's a real pain to remove it in the first place.
RichComment
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Re: 1967 L71 Transmission Mount Bracket Removal Help Needed
Rich, thank you. I will tackle it again tomorrow.
RickComment
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Re: 1967 L71 Transmission Mount Bracket Removal Help Needed
Get back out there tonight, Gower, and take your medicine! Enjoy your battle with a great car! Sorry, couldn't resist.......Comment
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Re: 1967 L71 Transmission Mount Bracket Removal Help Needed
I just removed and reinstalled the trans mount on my 67 yesterday. I have a 327 with a 3 speed so this may not be the same , but one of the bolts was accessible from below ,both bolt head and nut the other nut is accessible from below and the head is accessible from the top thru the shifter hole. Also if you have a jack holding the trans. up while you are doing this you may be able to keep the bolt from turning by letting the jack down a bit to put strain on the bolt to hold it in place. Hope this helps . JeffComment
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Re: 1967 L71 Transmission Mount Bracket Removal Help Needed
Loren, I have a second creeper available! Jeff, thank you for the information. I appreciate it.
RickComment
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Re: 1967 L71 Transmission Mount Bracket Removal Help Needed
Rick
Assuming the bolt head must be rounded off because a swivel end box wrench goes in. On the brace that mounts the tranny mount go straight in and split the nut using a die grinder cut off wheel. All is performed best on a lift.......Comment
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Re: 1967 L71 Transmission Mount Bracket Removal Help Needed
Gene, I don't think the heads are rounded off. I think he just hasn't been able to access the heads of the bolts as they're hard to see from underneath. The tunnel is tight in there and I know it's a pain to get at.
He said he was going to get to it today so we'll hear more.
RichComment
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Re: 1967 L71 Transmission Mount Bracket Removal Help Needed
Hi Rich,
All three bolts securing the brace that mounts the transmission cushion are accessible with standard box/open end wrenches. Even easier with swivel box wrenches. Other than rust or damaged bolts and nuts I just do not see where the issue is that access is not doable.Comment
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Re: 1967 L71 Transmission Mount Bracket Removal Help Needed
It is done! The key was to remove the rubber transmission mount, loosen the brace which supports the exhaust pipes and which the rubber mount bolts go thru to the tail shaft. Once the brace bolts were removed I could slid it out of the way enough to where I was able to put a short wrench with a socket built on it to hold the top of the bolts. I also jacked up the transmission 3/4" to gain more access. It was still very tight. After the bottom bracket was removed I then could maneuver the brace to get it out. Interestingly, the two bolts which hold the rubber mount into the brace and tailshaft are two different sizes.
Thank you to all who for the great suggestions and photo's!Comment
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Re: 1967 L71 Transmission Mount Bracket Removal Help Needed
Rick,
Good that you worked it out. My photos were from a sidepipe car, and I hadn't thought about the undercar exhaust bracket. And yes, I should have mentioned jacking the transmission up a bit helps release the strain on the hardware, but you figured that out.
Strange about 2 bolt sizes in the rubber mount to tailshaft. It may be that someone stripped the threads in the tailshaft and re-tapped it for the next larger size. You could use a correctly sized Heli-Coil kit to return it to the correct size.
Rich
p.s. Just curious......Now that you got it apart, what was the main objective for removing this hardware.?
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