Tranny rebuild
Thread Starter
Drifting
Joined: Nov 2001
Posts: 1,469
Likes: 6
From: 68 427 4.11s Roadster
Tranny rebuild
My 4 speed shifts like crap and sometimes grinds going into reverse(might be just the clutch adjustment for reverse).
Just what is involved in rebuilding it? Is there a rebuild kit out there?
I'm assuming its the synchro dogs but not sure.
I remember my 69 (SB) shifted with 2 fingers and this one has always shifted with your entire arm, pretty heavy. Several lbs pressure to go into any gear... except reverse.
The gear linkage has been adjusted, several times and even the side cover removed to check out the detents... no luck.
Also I'm assuming the car originally was driven quite hard. Hi rev BB with close ration and 4.11s. This might have something to do with the tranny- and the broken spindle
(is broken presently but getting ready to fix the broken rear wheel spindle soon)!
Just what is involved in rebuilding it? Is there a rebuild kit out there?
I'm assuming its the synchro dogs but not sure.
I remember my 69 (SB) shifted with 2 fingers and this one has always shifted with your entire arm, pretty heavy. Several lbs pressure to go into any gear... except reverse.
The gear linkage has been adjusted, several times and even the side cover removed to check out the detents... no luck.
Also I'm assuming the car originally was driven quite hard. Hi rev BB with close ration and 4.11s. This might have something to do with the tranny- and the broken spindle
(is broken presently but getting ready to fix the broken rear wheel spindle soon)!
Safety Car
Joined: Oct 2000
Posts: 4,286
Likes: 172
From: Lake Wylie, South Carolina
I just started my first rebuild this weekend. I ordered my rebuild kit and the overhaul video from these guys.
http://www.5speeds.com/. I want to say that it looks pretty easy but right now it looks like I have a danting task ahead of me. Good luck if you decide to rebuild your your self!
http://www.5speeds.com/. I want to say that it looks pretty easy but right now it looks like I have a danting task ahead of me. Good luck if you decide to rebuild your your self!
Advanced
Joined: May 2005
Posts: 99
Likes: 0
From: Lincolnton NC
This is probably a wild guesstimate, but 
some diehard dragsters used to modify the Muncie to avoid having to use the clutch....just slam the sam out of it from one gear to the next.
..like i said probably a wild guess
I'm currently trying to get my 4 speed installed and have ran into some educational experiences about ascertaining that the correct parts are used....starting all over again tonight
Bellhousing, throwout bearing, pressure plate, clutch fork and ball stud for clutch fork, WERE ALL WRONG!! Bolted up nicely, but couldn't adjust clutch, that's when (the worst time) we started looking /investigating part numbers for this project. Practically, all parts sources were selling me the wrong quit!!
GMpartsDirect.com is a good source for correct parts and part numbers. good luck, jim
some diehard dragsters used to modify the Muncie to avoid having to use the clutch....just slam the sam out of it from one gear to the next.
..like i said probably a wild guess
I'm currently trying to get my 4 speed installed and have ran into some educational experiences about ascertaining that the correct parts are used....starting all over again tonight
Bellhousing, throwout bearing, pressure plate, clutch fork and ball stud for clutch fork, WERE ALL WRONG!! Bolted up nicely, but couldn't adjust clutch, that's when (the worst time) we started looking /investigating part numbers for this project. Practically, all parts sources were selling me the wrong quit!!
GMpartsDirect.com is a good source for correct parts and part numbers. good luck, jim
Thread Starter
Drifting
Joined: Nov 2001
Posts: 1,469
Likes: 6
From: 68 427 4.11s Roadster
I think the original owner was quite interested in drag racing so maybe the mod was done. I figure that only from the options he bought and the engine is gone. I also broke a rear spindle.
High redline BB, close ratio, 4.11s am/fm radio (not stereo) and power windows.
The clutch fork adjustment was played with and that didn't seem to make a diff. To different clutches.
Blackrat I'm waiting for you to finish yours and fill us on complexities
High redline BB, close ratio, 4.11s am/fm radio (not stereo) and power windows.
The clutch fork adjustment was played with and that didn't seem to make a diff. To different clutches.
Blackrat I'm waiting for you to finish yours and fill us on complexities
