The 1947 - Present Chevrolet & GMC Truck Message Board Network

The 1947 - Present Chevrolet & GMC Truck Message Board Network (https://67-72chevytrucks.com/vboard/index.php)
-   The 1988 - 1998 GMT400 Chevy & GMC Pickups Message Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=12)
-   -   Manual to Auto transmission crossmember ? (https://67-72chevytrucks.com/vboard/showthread.php?t=474371)

rchavez101 07-12-2011 11:14 PM

Manual to Auto transmission crossmember ?
 
I am in the process of gathering info for my tranny swap from a manual to a 700r4 and I am wondering if the cross member is different or does it need to be rolocated with different mount on the cross member. Please let me know thanks.

rchavez101 07-13-2011 07:05 PM

Re: Manual to Auto transmission crossmember ?
 
I know someone knows the answer.

bubba353z 07-19-2011 12:32 PM

Re: Manual to Auto transmission crossmember ?
 
I'm doing searches here for the same project.....

I found one thread (so far) that says you have to remove the manual crossmember, which makes sense. Looking at my 68' (w/ 3 on the tree) it has two side mounts to the manual's case, whereas the 700 has a single mount on the tailshaft.

I'm looking at a CPP tubular mount right now.... Others will likely suggest different options

rchavez101 07-19-2011 02:52 PM

Re: Manual to Auto transmission crossmember ?
 
Quote:

Originally Posted by bubba353z (Post 4798959)
I'm doing searches here for the same project.....

I found one thread (so far) that says you have to remove the manual crossmember, which makes sense. Looking at my 68' (w/ 3 on the tree) it has two side mounts to the manual's case, whereas the 700 has a single mount on the tailshaft.

I'm looking at a CPP tubular mount right now.... Others will likely suggest different options

I heard that you have to move the crossmember back but put a different mount for the 700R4. When I look under the truck there are different holes on the frame to move the crossmember back or forward. I have not been able to verify if that is true or not. I know some on the forum has gone from manual to Automatic but unsure how they did it.

bubba353z 07-19-2011 07:42 PM

Re: Manual to Auto transmission crossmember ?
 
Yeah, the 700 is longer than a 350/400 - but it's only two holes per side to drill (at most).

The 700/350/400 use the same rear mount. Check out Energy Suspension:

http://www.jegs.com/i/Energy+Suspens...1108G/10002/-1


All times are GMT -4. The time now is 11:01 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2026, vBulletin Solutions Inc.
Copyright 1997-2025 67-72chevytrucks.com