The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-01-2013, 11:26 PM   #1
profe56
Registered User
 
Join Date: Nov 2008
Location: Chula Vista California
Posts: 526
Automatic transmisison & manual transmission crossmember

Good evening folks, from San Diego:
At first my truck used to have manual transmission and then I swaped a 700r4.
The truck still having installed the original crossmember for manual trany, but I can not install the converter cover, is there any diference betwen auto & manual crossmembers?
I was thinking about take it out, installing the cover, and then reinstal the crossmember.



Uploaded with ImageShack.us
profe56 is offline   Reply With Quote
Old 05-02-2013, 12:53 AM   #2
RManson
Registered User
 
Join Date: Jun 2011
Location: United States
Posts: 159
Re: Automatic transmisison & manual transmission crossmember

I'm assuming you have an actual trans crossmember that the tranny is mounted to. That replaces the original bellhousing manual trans crossmember. Cut out the rivets and get rid of it. I'm putting an LS in my '68 and that's what I'm doing.
RManson is offline   Reply With Quote
Old 05-02-2013, 01:01 AM   #3
70blackfish
Registered User
 
Join Date: Oct 2012
Location: Newhall CA
Posts: 1,195
Re: Automatic transmisison & manual transmission crossmember

you need to get the rear crossmember for that 700r4 and then cut that one out...its no longer needed.

I just did this to mine a week ago...now i need headers and my driveshaft is to short,
Attached Images
 
__________________
69 SWB 780hp Hellcat powered, manual 6 speed, currie 9
70blackfish is offline   Reply With Quote
Old 05-02-2013, 01:17 AM   #4
profe56
Registered User
 
Join Date: Nov 2008
Location: Chula Vista California
Posts: 526
Re: Automatic transmisison & manual transmission crossmember

I don't know if you say about this crosmember.
But, can the frame safe if I cut the front crosmember?
http://img854.imageshack.us/img854/4584/p9260129.jpg
profe56 is offline   Reply With Quote
Old 05-02-2013, 01:19 AM   #5
profe56
Registered User
 
Join Date: Nov 2008
Location: Chula Vista California
Posts: 526
Re: Automatic transmisison & manual transmission crossmember

And also I want to install headers and I think this crossmember is on the way of the headers.
profe56 is offline   Reply With Quote
Old 05-02-2013, 01:20 AM   #6
RManson
Registered User
 
Join Date: Jun 2011
Location: United States
Posts: 159
Re: Automatic transmisison & manual transmission crossmember

That's the crossmember that supports the trans. Keep it and get rid of the one that's under the bellhousing.
RManson is offline   Reply With Quote
Old 05-02-2013, 01:59 AM   #7
SS Tim
Registered User
 
SS Tim's Avatar
 
Join Date: Aug 2010
Location: Edwards, CA
Posts: 7,503
Re: Automatic transmisison & manual transmission crossmember

It really is that simple.
The manual transmission trucks used a crossmember under the engine mounts and another at the clutch bellhousing. This provided a strong stable four point mount system.
Automatic trucks (4x2) used a crossmember under the engine mounts and another at the rear of the transmission under the extension housing. These vehicles had a three point mount system.

To convert it you will probably want to remove the crossmember. As the rivets are difficult to remove and more so with a cab in place many people simply cut the crossmember out at the frame rails.

In any event you will want to use the complete factory style automatic crossmember for best results.
Attached Images
   
SS Tim is offline   Reply With Quote
Old 05-02-2013, 12:10 PM   #8
profe56
Registered User
 
Join Date: Nov 2008
Location: Chula Vista California
Posts: 526
Re: Automatic transmisison & manual transmission crossmember

Thanks folks: "more clear, only the water"
I'll take advantage, the engine is not mounted, to take the rivets off.
More questions within few days.
profe56 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 02:38 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com