GMCtrk

iTrader: (27)

I've measured the distance from the front of the trans to the mounting bolt that goes to the crossmember at 30 5/8". TCI is listing the same distance on the 60e as 23 19/32". That means that my crossmember mounting bolt needs to move back roughly 7". Yet, the number I always seen thrown around is 6 1/4" ??? Can anyone elaborate on this?

Im aware the best way to do this is to physically put the trans in and cut/weld the x member on the spot, but I can't weld so Im going to have the x member fabricated before hand, which is why I need these precise measurements.





4L60E/4L65E 1996-Later (bellhousing pattern - Chevrolet/removable)
Style A B C D E
All except Corvette & LS1/LS2 30 ¾ 21 ¾ 23 3/16 3 ¾ 18 ¼
Corvette (transaxle) N/A N/A
LS1/LS2-style (1998-later) 31 5/32 21 ¾ 23 19/32 3 ¾ 18 ¼



4L80E/4L85E 1991-Later (bellhousing pattern - Chevrolet)
Style A B C D E
Std. 2wd 32 11/16 26 30 3/8 4 ¼ 20
HD 2wd 31 15/16 26 30 3/8 4 ¼ 20
HD long 33 26 30 3/8 4 ¼ 20
4 X 4 29 26 30 3/8 N/A 20

charcold-bowtie

iTrader: (10)

6.25 will work. Im not sure why its off. One note is that the cross member has a one inch slot for the stud. Perhaps the 60 mounts towards the front of the slot, and that location is being moved. Im not sure.

GMCtrk

iTrader: (27)

Gotcha. I figured it was slotted, but I wasn't sure until I got up under there and checked.

I still think it's odd though that 6.25" was chosen as the length to move it back since the actual bolt goes back 7".

charcold-bowtie

iTrader: (10)

another note. the rubber bushing and tranny stud, or whatever you phrase it, can be turned around. When I first put back together two weeks ago it wouldnt work. Spun the rubber mount around and it fit fine. I believe it made it too long for the crossmember. 80e

GMCtrk

iTrader: (27)

Are you saying that the rubber mount wasn't fully seated on the crossmember or that the stud was too far back? Im assuming you moved your crossmember back 6.25?

charcold-bowtie

iTrader: (10)

ehh. I moved mine back right at 6.00. The stud that sticks out of the rubber mount was sitting too far towards the back of the slot of the member. t

GMCtrk

iTrader: (27)

Well, I'm glad you replied......I'm glad that there is some play in the distance you can move things back. I was really trying to measure precisely lol, guess it doesn't have to be spot on. Depending on the measurements I take on my truck as to where the 60e's stud sits, I'll probably move the crossmember back about 6.75"

Breeze

iTrader: (16)

Mine worked out to be 6 1/4 inches and is/was dead center in the slot.

Low_LSX

iTrader: (33)

Same Here.

rcmobile

do you think that will be about the same on a 2wd ecsb?? would i be safe to move it back 6 1/4 to center of slot? as mine will have to be done off truck also before hand...