Driveshaft install. Something odd?
Thread Starter
Race Director
Joined: Jan 2002
Posts: 11,614
Likes: 347
From: No Where USA
Driveshaft install. Something odd?
Installing the driveshaft today and came across a couple of things that didn't seem right. Trans is a recent rebuilt M-22, new u joints, new clutch.
I put the rear of the shaft in and the yoke on the rear would turn when I spun the tire to align the u joint. I tried to turn the yoke on the trans and it is super tight. I seem to remember being able to turn them by hand. Yes the trans is in neutral. Well I turned the yoke using a big screw driver to align one side of the yoke. I got that bolted up and then spun the tire to align the other side and the driveshaft didn't move. The tire spun but it seemed like the shaft wasn't bolted up. The shaft didn't turn. Now I aligned the yoke with a screw driver and when I turned the front yoke, with the screwdriver the tires now spun.
Is the trans supposed to be tight. (M-22). Now why didn't the tire spin the front yoke, it seemed like the rear is in neutral.
I drove the car before I did the 4 speed conversion and the rear worked fine and there were no noises.
I put the rear of the shaft in and the yoke on the rear would turn when I spun the tire to align the u joint. I tried to turn the yoke on the trans and it is super tight. I seem to remember being able to turn them by hand. Yes the trans is in neutral. Well I turned the yoke using a big screw driver to align one side of the yoke. I got that bolted up and then spun the tire to align the other side and the driveshaft didn't move. The tire spun but it seemed like the shaft wasn't bolted up. The shaft didn't turn. Now I aligned the yoke with a screw driver and when I turned the front yoke, with the screwdriver the tires now spun.
Is the trans supposed to be tight. (M-22). Now why didn't the tire spin the front yoke, it seemed like the rear is in neutral.
I drove the car before I did the 4 speed conversion and the rear worked fine and there were no noises.
Race Director
Joined: May 2006
Posts: 18,692
Likes: 2,572
when the tire didnt spin the front yoke and drive shaft did you notice what the other rear tire was doing, perhaps spinning in the opposite direction?
the transmission should not be tight if it really is in neutral, you checked the sihft levers on the side of the transmission case?
the transmission should not be tight if it really is in neutral, you checked the sihft levers on the side of the transmission case?
Thread Starter
Race Director
Joined: Jan 2002
Posts: 11,614
Likes: 347
From: No Where USA
when the tire didnt spin the front yoke and drive shaft did you notice what the other rear tire was doing, perhaps spinning in the opposite direction?
the transmission should not be tight if it really is in neutral, you checked the sihft levers on the side of the transmission case?
the transmission should not be tight if it really is in neutral, you checked the sihft levers on the side of the transmission case?
When I turn the p/s tire the d/s spins the opposite way. When I move the driveshaft with a long screwdriver both wheels turn the same way. I checked the shift rods and they appear to be in neutral.
The thing that seems odd is when I spin the rear tire the driveshaft dosen't move.
Safety Car
Joined: Feb 2006
Posts: 4,367
Likes: 59
From: FL
When I turn the p/s tire the d/s spins the opposite way. When I move the driveshaft with a long screwdriver both wheels turn the same way. I checked the shift rods and they appear to be in neutral.
The thing that seems odd is when I spin the rear tire the driveshaft dosen't move.
The thing that seems odd is when I spin the rear tire the driveshaft dosen't move.
1. Not really out of gear. Either shift by hand the rods underneath or have someone in the car while you watch the rods.
2. Yoke seal is new and very stiff.
3. Yoke is rusted to the seal from sitting in humid/moist area.
4. Wrong yoke. In too far and rubbing or something.
5. Transmission broken. Did you check that it spun before putting it in?
6. Yoke is hitting frame.
Now if you have a Positraction, which most before 1970 were and all after were, then wheels should turn the same direction unless the driveshaft is locked (park, in gear, etc.).
Thread Starter
Race Director
Joined: Jan 2002
Posts: 11,614
Likes: 347
From: No Where USA
A few reasons the transmission yoke could be tight:
1. Not really out of gear. Either shift by hand the rods underneath or have someone in the car while you watch the rods.
2. Yoke seal is new and very stiff.
3. Yoke is rusted to the seal from sitting in humid/moist area.
4. Wrong yoke. In too far and rubbing or something.
5. Transmission broken. Did you check that it spun before putting it in?
6. Yoke is hitting frame.
Now if you have a Positraction, which most before 1970 were and all after were, then wheels should turn the same direction unless the driveshaft is locked (park, in gear, etc.).
1. Not really out of gear. Either shift by hand the rods underneath or have someone in the car while you watch the rods.
2. Yoke seal is new and very stiff.
3. Yoke is rusted to the seal from sitting in humid/moist area.
4. Wrong yoke. In too far and rubbing or something.
5. Transmission broken. Did you check that it spun before putting it in?
6. Yoke is hitting frame.
Now if you have a Positraction, which most before 1970 were and all after were, then wheels should turn the same direction unless the driveshaft is locked (park, in gear, etc.).
The posi, I have to go to #1 for that.
Last edited by 540 vette; Mar 22, 2017 at 05:08 PM.
Thread Starter
Race Director
Joined: Jan 2002
Posts: 11,614
Likes: 347
From: No Where USA
Took the linkage off. Put the trans in neutral. Driveshaft will turn with the help of a big screwdriver like it did before.. When the driveshaft turns both tires spin the same way. Why don't the tires spin the driveshaft.
Thread Starter
Race Director
Joined: Jan 2002
Posts: 11,614
Likes: 347
From: No Where USA
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
Thread Starter
Race Director
Joined: Jan 2002
Posts: 11,614
Likes: 347
From: No Where USA
A few reasons the transmission yoke could be tight:
1. Not really out of gear. Either shift by hand the rods underneath or have someone in the car while you watch the rods.
2. Yoke seal is new and very stiff.
3. Yoke is rusted to the seal from sitting in humid/moist area.
4. Wrong yoke. In too far and rubbing or something.
5. Transmission broken. Did you check that it spun before putting it in?
6. Yoke is hitting frame.
Now if you have a Positraction, which most before 1970 were and all after were, then wheels should turn the same direction unless the driveshaft is locked (park, in gear, etc.).
1. Not really out of gear. Either shift by hand the rods underneath or have someone in the car while you watch the rods.
2. Yoke seal is new and very stiff.
3. Yoke is rusted to the seal from sitting in humid/moist area.
4. Wrong yoke. In too far and rubbing or something.
5. Transmission broken. Did you check that it spun before putting it in?
6. Yoke is hitting frame.
Now if you have a Positraction, which most before 1970 were and all after were, then wheels should turn the same direction unless the driveshaft is locked (park, in gear, etc.).
Trans guy got back to me turns out to be #2. Yoke seal very stiff.
Thanks for the help guys.