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-   -   700R4 Transmission Mount (https://www.trifive.com/forums/showthread.php?t=177219)

Trifecta 09-12-2017 12:55 PM

700R4 Transmission Mount
 
5 Attachment(s)
I'm sure this query has been raised before, but I need to open a new thread on it.
I have a split frame I'm using for my '55 Nomad project. It has been sand blasted and powder coated. The 350 sb has been mounted and the new Sanderson block hugger headers are clearing everything nicely including the Borgeson 600 steering box.
The headers are shorties and the collectors are not positioned perfect, but OK. My problem is with the 700R4 tranny mount. It secures nicely on the inside parts of the frame, but it obstructs the path for the exhaust pipes.
I used a different mount when I installed a similar tranny on one of my '56's, but it had to be modified to mount on the bottom side of the frame allowing passage of the exhaust pipes along the inside of frame.
My question is whether there is a 700R4 tranny mount that will bolt on to the bottom side of the frame without having to be modified?
Any ideas before I buy the curved support from Summit?
Bob

Attachment 157351

Attachment 157352

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Attachment 157355

USA1 09-12-2017 02:06 PM

Looks like a job for A 1ST gen or early 2ND gen Camaro crossmember. If it was mine I would just pull one out of the pile and use it

hotrodg726 09-12-2017 02:40 PM

either of the afore mentioned units work very well. what you have currently is a poor choice and looks like someone just thru something in there with no regard to where the exhaust would go.

TheHotrodHandyman 09-12-2017 02:47 PM

Quote:

Originally Posted by hotrodg726 (Post 1940740)
either of the afore mentioned units work very well. what you have currently is a poor choice and looks like someone just thru something in there with no regard to where the exhaust would go.

Exactly.

Trifecta 09-12-2017 03:42 PM

That cross member came as part of a kit I bought for a 350 tranny. The guy installed it because it was what he had available. He is the one who brought it to my attention that the mount would make the exhaust pipes hang to low.
I know there's one from Summit I can use by modifying it.. I used it on my '56 with the 700R4. Using an "H" pipe will create a tight fit.
Bob

USA1 09-12-2017 04:15 PM

Quote:

Originally Posted by Trifecta (Post 1940754)
That cross member came as part of a kit I bought for a 350 tranny. The guy installed it because it was what he had available. He is the one who brought it to my attention that the mount would make the exhaust pipes hang to low.
I know there's one from Summit I can use by modifying it.. I used it on my '56 with the 700R4. Using an "H" pipe will create a tight fit.
Bob

Why buy something that needs modified when there are readily available parts that fit.

Trifecta 09-12-2017 05:04 PM

Quote:

Originally Posted by USA1 (Post 1940758)
Why buy something that needs modified when there are readily available parts that fit.

Nothing is perfect in this world. J:-)
I'll see what I can find. Thanks for the help!
Bob

hotrodg726 09-12-2017 05:06 PM

Earl Williams has nice ones at a reasonable price.

acardon 09-12-2017 05:59 PM

Crossmember: http://www.classicchevy.com/chevy-re...1955-1957.html

Trifecta 09-12-2017 06:57 PM

Quote:

Originally Posted by acardon (Post 1940780)

Dang, this looks like the one I used on my '56 4dr HT. But I do remember it had to be modified.
The frame on the 4dr '56 is a "California" frame which has a wider spacing between frame members. The Nomad frame I'm using has the narrower split frame spacing, which may mean no modifying is necessary.
On a side note, there's a rear shock mount bracket sold by just about everyone that wont fit on a "California" frame. The shock mount is a half inch too short.
Bob


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