by richie61 Tue Apr 13, 2010 8:07 pmSo are we putting it to bed for good??
+3
m1dadio
61econoline
donivan65
7 posters
Ritchies 66 GMC
richie61- Number of posts : 445
Location : Van Nuys, CA
Age : 63
Registration date : 2010-01-04
donivan65- Governor
- Number of posts : 12220
Location : San Diego, California
Registration date : 2008-05-12
Hell no! we are just getting started,,,,,you need to gather all the facts,,, evaluate them,,,, list your options and choose whats best for you,,,,,you need to see the whole picture to start fixing things,,, not just fixing things you happen to find,,,,,,,we kind of know everything about that rear end,,,,,,are you man enough to pull the axles and the carrier assembly out of the housing to see the condition of the gear set, the gear ratio, if it is a PosiTraction and if there is metal in the case? What you find in there will determine if it stays or if it goes,,,,,,,,if it is a 3:08, that is pretty desirable to everyone,,,,,,if its a 4:11 that a whole different story. But you still need to do explorable surgery to find out what you got , then put a plan together. Do the master cylinder and the brake lines and then worry about that rear end,,,that yoke kinda needs to slide in and out an inch, so see if it is in the middle of its travel when it is sitting there in the rear seal. Then we will know if where it is at is a problem...........
richie61- Number of posts : 445
Location : Van Nuys, CA
Age : 63
Registration date : 2010-01-04
I can measure the travel and take the driveshaft off without a problem. So what comes out next, the axles, the carrier assembly? Once I have it apart I'll post the pictures and you can see what I've got. I'll have to change out of my skirt first....the wife in a wheelchair with a plate and 15 drywall screws in her ankle....kids to drive around....dinners to make....the van time is limited so it may take a couple of days to man up and get it started.
m1dadio- Chevy Guru
- Number of posts : 1778
Location : north saanich
Registration date : 2008-10-06
When you get that yoke out show us the splines. That will help to ID the trans. Also measure your drive shaft center to center of the u joint cups and let us know what it measures. It might be the shorter 2nd gen drive shaft.
I dought its a longer yoke, you can see its on an angle because its just hanging in there.
It should look like this when installed with the right drive shaft lenght and the wieght sitting on the rear axle.
Even mine could stand to be in about another 1/4" or so. You only need about 1" for travel as the rear end moves up and down. The more you get inside, the more contact you will have with the bushing. Make sure you clean the rust off it before pushing it in. The seal is easy to change and yours is likely hooped from the shaft hanging out like that
M1D
I dought its a longer yoke, you can see its on an angle because its just hanging in there.
It should look like this when installed with the right drive shaft lenght and the wieght sitting on the rear axle.
Even mine could stand to be in about another 1/4" or so. You only need about 1" for travel as the rear end moves up and down. The more you get inside, the more contact you will have with the bushing. Make sure you clean the rust off it before pushing it in. The seal is easy to change and yours is likely hooped from the shaft hanging out like that
M1D
m1dadio- Chevy Guru
- Number of posts : 1778
Location : north saanich
Registration date : 2008-10-06
So why tear apart the rear end? does it have a plroblem? You can find out what gear it is and if posi or not without opening it up.
Have a look at the pictures of Big noer's yoke in the I 99 problems thread. You can see by how clean it is that it was running corectly and the wear patern from the bushing is right in the midle where it should be.
Does your speedo cable work? twerl it with a drill in the right direction. (it wont hurt it if you go backwards) and see it the speed works.
I have a speedo cable if you need one.
M1D
Have a look at the pictures of Big noer's yoke in the I 99 problems thread. You can see by how clean it is that it was running corectly and the wear patern from the bushing is right in the midle where it should be.
Does your speedo cable work? twerl it with a drill in the right direction. (it wont hurt it if you go backwards) and see it the speed works.
I have a speedo cable if you need one.
M1D
richie61- Number of posts : 445
Location : Van Nuys, CA
Age : 63
Registration date : 2010-01-04
I have new speedo cable and gear except the new gear is for a 65-66 transmission and I dont think mine is the original one. I did the drill test and it spins fine. The driveshaft measures 23" How can I determine what type of rear end it is without tearing it apart??
donivan65- Governor
- Number of posts : 12220
Location : San Diego, California
Registration date : 2008-05-12
You actually got the easy rear end to take apart,,,,,,you got the good bearings that unbolt rather than fighting with the pinion bolt, shaft, spider gears, thrust washers and c clips,,,,,,,,,you pull the drums off, you reach in through the holes in the axle flange and unbolt the flange that hold them in,,,,,,undo the driveshaft,,,,,undo all the bolts on the front and pull the whole carrier assembly out without dropping it on your foot,,,,,,its all self contained, no pieces to fall out,,,,,then take pictures and we will know what that is,,,,,,try and save the gasket,,,,,RTV it back in or make a new one out of gasket material,,,,,,,,this won't take long. You don't really have to pull it apart,,,,but I would,,,,,,i want to know for sure on what I got and its condition,,,,,I want to touch it. Then I know exactly what I got and can make good decisions on what to do with it in the future. I don't like guessing,,,,,,do it once, do it right,,,,,,move on,,,,,,,
m1dadio- Chevy Guru
- Number of posts : 1778
Location : north saanich
Registration date : 2008-10-06
You do have the 65/66 drive shaft. And it looks like the right yoke too.
I think the other guys are right about the rear end being a spicer from an earlier full size GM car.
With the wheels off the ground and the trans in nutral turn on wheel. If the other wheel goes in the same dirrection it is a posi. If the other wheel goes in the oposite direction it is either an open rear end or a very worn out posi.
In order top find the gear ratio, mark both tires and the pinion yoke and housing with chalk. Rotate the tire one full turn, the other tire has to also do one full turn in the same direction so you may need some one else to help turn the other wheel if the brakes drag or anything. While the wheel is being turned one full turn count how many full turns pluss the final psrtial turn the pinnion yoke goes. Like Don said, the drive shaft will turn 4.11 times or 3.08 times for one turn of the tires or some other number of turns. You want to know the ratio and it might also help ID the rear end.
M1D
I think the other guys are right about the rear end being a spicer from an earlier full size GM car.
With the wheels off the ground and the trans in nutral turn on wheel. If the other wheel goes in the same dirrection it is a posi. If the other wheel goes in the oposite direction it is either an open rear end or a very worn out posi.
In order top find the gear ratio, mark both tires and the pinion yoke and housing with chalk. Rotate the tire one full turn, the other tire has to also do one full turn in the same direction so you may need some one else to help turn the other wheel if the brakes drag or anything. While the wheel is being turned one full turn count how many full turns pluss the final psrtial turn the pinnion yoke goes. Like Don said, the drive shaft will turn 4.11 times or 3.08 times for one turn of the tires or some other number of turns. You want to know the ratio and it might also help ID the rear end.
M1D
m1dadio- Chevy Guru
- Number of posts : 1778
Location : north saanich
Registration date : 2008-10-06
Don has said its likely the rear end being short that is making the yoke hang out but it might be the trans tail shaft being short if that is not a stock trans.
Give a picture of the whole trans.
M1D
Give a picture of the whole trans.
M1D
richie61- Number of posts : 445
Location : Van Nuys, CA
Age : 63
Registration date : 2010-01-04
Got it but what is RTV?
I'm fried guys thanks 6am comes early. Will catch up tomorrow.
Richie
I'm fried guys thanks 6am comes early. Will catch up tomorrow.
Richie
donivan65- Governor
- Number of posts : 12220
Location : San Diego, California
Registration date : 2008-05-12
You got a lot of good information coming at you here,,,,,look at your transmission mount,,,,,if it has that hanging mount on it, then its a Chevy/GMC Van trans,,,,,those don't fit anything else in the world. RTV is silicone gasket sealer,,,,,,to keep the oil from leaking out around a gasket. My take on this is before you spend a couple hundred dollars on a longer driveshaft and a proportioning valve to try and stop those large brakes from locking up,,,,,,on a rear end that you don't even know what the parts are, take it apart, look at it,,,,,be sure there is no metal in it,,,,check the bearings,,,,,see if it is a Posi,,,,,,see what ratio it is,,,,,check the condition of the teeth,,,,,,just see what you got. There is no guarantee that a new driveshaft and proportioning valve will make that rear end work right. But you know what I told you before,,,,,you don't have to worry about this stuff if you are rich, Rich
Digz- Number of posts : 3794
Location : United States Six Lakes MI
Registration date : 2008-05-17
I did some looking and came up with a GM rear end all right but older, if Im reading the code right it was made Oct 18 1962 , used from 1954-1962? in many vehichles possibly including vettes, What used a trac bar with leaf springs then ??
m1dadio- Chevy Guru
- Number of posts : 1778
Location : north saanich
Registration date : 2008-10-06
LMAO!! I think Don has a spare trans or two!!!
M1D
M1D
donivan65- Governor
- Number of posts : 12220
Location : San Diego, California
Registration date : 2008-05-12
I'm missing a 2004R,,,,,,,,then I will have the complete Chevy/GMC Early Van transmission collection,,,,,,,
richie61- Number of posts : 445
Location : Van Nuys, CA
Age : 63
Registration date : 2010-01-04
Don, I think there isn't a extra part you don't have. As you told me once before...you can never have too many spare parts for our vans.
donivan65- Governor
- Number of posts : 12220
Location : San Diego, California
Registration date : 2008-05-12
Then let me take care of one of your worries , Rich. If your transmission is 22" long, then it ain't too short,,,,,,,,,
richie61- Number of posts : 445
Location : Van Nuys, CA
Age : 63
Registration date : 2010-01-04
I'll get my yardstick and measure it later. If it's shorter will I need prozac?
donivan65- Governor
- Number of posts : 12220
Location : San Diego, California
Registration date : 2008-05-12
,,,,,or a blue pill,,,,,,,
richie61- Number of posts : 445
Location : Van Nuys, CA
Age : 63
Registration date : 2010-01-04
I've been marrried 26 years....it doesn't matter what color the pill is at this point!!!!
donivan65- Governor
- Number of posts : 12220
Location : San Diego, California
Registration date : 2008-05-12
I'm thinking that maybe 1 1/2" is about the right amount that the yoke should be sticking out. Mine is about 1 1/4" and you can see it slides in about a 1/2" when I hit a bump and it probably does not slide out very much, maybe 1/4" when it rebounds,,,,,,,,,,
richie61- Number of posts : 445
Location : Van Nuys, CA
Age : 63
Registration date : 2010-01-04
OK...the transmission is 21" long so what color pill do I need now Don.....The yoke was sticking out 2 1/2 " and was in 1 1/2". The inside diameter of the break drum is 10.5"...the numbers on the big gear...2HK GM3756448 12 37 10 62. There was plenty of fluid and there were no metal shavings when I filtered it through cheese cloth. I rotated the drivers side tire and only one moved. I think it took 3 full turns plus a quarter but I hope I did it right. I hope I'm man enough to remember how to put it back together!!!
Guest- Guest
Just dont drive down I 99 with that drive shaft!!! Unless you like having fun like me in your van---
donivan65- Governor
- Number of posts : 12220
Location : San Diego, California
Registration date : 2008-05-12
Man Noah, look at you,,,,,,you know what you are talking about,,,,,,and that yoke sure is not in there deep enough,,,,,and thats because the rear end is too far back,,,,,it don't belong on that van. BUT 12 into 37= 3:08,,,thats a good one to have,,,,10 1/2 inch brake shoes is not,,,,,if there are no springs down inside the ring gear holding those side and spider gears apart, it is NOT a PosiTraction. That is the right transmission in your van,,,,,,look at the gears in that carrier assembly to be sure that there are not broken teeth. You probably need a new gasket,,,,,Napa might have one or Kragen,,,,,,maybe tell them you got a 62 Impala rear end and see if it fits,,,,,or make one,,,,see if a 12" square piece of gasket material is big enough and hold the gasket over the hole in the differential and tap along the inner and outer edges and the bolt holes to form a pattern by the hammer cutting away the excess to make a gasket. You did a good job,,,now you know what you got,,,,,, you got yourself one of the options you have to deal with, ( and that basically is get a longer driveshaft,,,,,,get an adjustable proportioning ,,,,this could end up being $300). So put it all back together,,,,,,,lets work on another option,,,,,getting another stock rear end,,,,,,,
donivan65- Governor
- Number of posts : 12220
Location : San Diego, California
Registration date : 2008-05-12
OK,,,,option 2,,,,,,,,to push that yoke in a little deeper and stop the rear brakes from locking up, you go to Home Depot and buy about 4 bags of 90 lb concrete and put them in your van,,,,,a $20 fix,,,,,,,the weight compresses your rear springs which moves the driveshaft forward and the rear tires have more traction,,,,,at least try a test by loading up your van with some kind of weight and see if things get better,,,,,,,,it's surely got to be better than what you got now,,,,,,,,
m1dadio- Chevy Guru
- Number of posts : 1778
Location : north saanich
Registration date : 2008-10-06
Richie61 was that you asking about the air filter assembly?
M1D
M1D
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