| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#1
08-16-2007, 11:09 PM
|
|||
|
|||
78 TA trans question
Which TH400 trans will fit in a 78 TA? A long or short tail? Thanks for any advice.
|
|
#2
08-16-2007, 11:28 PM
|
||||
|
||||
|
Short will fit the best.
|
|
#3
08-17-2007, 12:31 AM
|
|||
|
|||
|
OK, Thanks
|
|
#4
08-17-2007, 11:01 AM
|
||||
|
||||
|
Switched a 4-speed over to a short shaft 400 once. Think we had to move the crossmember back, drill new holes in the frame, driveshaft was a bolt in.
|
|
#5
08-17-2007, 12:21 PM
|
|||
|
|||
|
That's what I was wanting to do. That would be great if I can reuse the driveshaft. Pitch
|
|
#6
08-18-2007, 03:27 AM
|
||||
|
||||
|
Quote:
__________________
"It is foolish and wrong to mourn the men who died. Rather we should thank God that such men lived."- General George Patton "Perpetual peace is a futile dream."-General George Patton "I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them."-Thomas Jefferson "Any society that would give up a little liberty to gain a little security deserves neither and will loose both."-Benjamin Franklin |
|
#7
08-18-2007, 07:59 AM
|
||||
|
||||
|
There are at least three trans possibilities.
TH400 Short 32 spline TH400 Long 32 Spline TH400 Long 27 spline Any could work, the short was OEM for 70-74 The 27 spline is mid/late 70's and probably not as strong as the 32 spline. Unless you currently have a 71-81 4 speed, you will need to shorten your driveshaft. If you have a TH350 now, you will need to change your yoke uless you use the 27 spline TH400. I believe the 78 OEM crossmember is the same as the 70-74 TH400 except it has one slot versus two for the tranny mount. I have a repro TH400 x-member for sale in case your interested, pm me.
__________________
Gregg V. |
| Reply |
|
|
The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.
Linear Mode
