| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#1
03-09-2014, 10:09 AM
|
||||
|
||||
Muncie M20- Driveshaft Yoke Question
I replaced the scatter shield with a stock bell housing. It appears now the yoke doesn't penetrate into the transmission as far. It was approximately 2 5/8" now it's approximately 2". The car is a '67 Firebird, 455, M20. I'm not sure that matters as my guess is the proper depth for the yoke to enter the transmission should be a consistent dimension from model to model. The witness marks on the yoke lead me to think it lived at the shallower depth for at least part of its life. Is there a specification or an accepted practice for how far the yoke should enter the transmission?
|
|
#2
03-09-2014, 02:27 PM
|
||||
|
||||
|
True dimension to look for is between 5/8" and 1" gap of the yoke from being bottomed out in the Trans. More than 1" and you need to add to the Drive shaft length. Less than 5/8" inches and you need to have the drive shaft shortened.
You DO NOT want the yoke bottoming out in the trans under vehicle/rear axle movement or YOU WILL KILL THE TRANS, GUARANTEED! Tom Vaught
__________________
"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
|
#3
03-10-2014, 07:43 AM
|
||||
|
||||
|
Did you check it with the rear supported on jack stands?
__________________
1967 Firechicken, 499", Edl heads, 262/266@0.050" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. 10.01@134.3 mph with a 1.45 60'. Still WAY under the rollbar rule. |
|
#4
03-10-2014, 09:47 AM
|
||||
|
||||
|
No....I had it up on a lift, but I see where you are headed with that. Having the suspension unloaded would change the measurement. Hmmm....I'll have to get back underneath it and do some measuring.
|
| 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
