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Thread: 53 Is back from the Body Shop
          
   
   

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  1. #766
    40FordDeluxe's Avatar
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    Very trip! Maybe next year we can go to Torque fest which is in Dubuque. Also, we should take some m9re fun rides to the road I took to Sedalia. It had more hills and was 18 miles. Speed limit 60 which I think I hit once and regretted it. It would have been pure joy in the camaro. ��

    I'm glad you enjoyed it all and had no major problems. The Boone Scenic Valley Rail road is really cool. We've only taken steam locomotive rides on the line. That bridge is quite a ways up there in an open sided train car. Haha I've always wanted to go to the spam museum but my wife hates spam. Also, there's an automotive collection I have always wanted to drop in just north of there. Funny about the IH's, my wife spotted one setting on the out skirts of Carlisle last weekend. I also know where a 2 door commanche is but I'd rather hav3 a scout too. A friend of mine is building one with a 361? and a 4L65E. I'm not sure when he'll get it done. Do you two have any plans to come to goodguys? Maybe take a ride down Grand in the Camaro or 40? ��
    Ryan
    1940 Ford Deluxe Tudor 354 Hemi 46RH Electric Blue w/multi-color flames, Ford 9" Residing in multiple pieces
    1968 Corvette Coupe 5.9 Cummins Drag Car 11.43@130mph No stall leaving the line with 1250 rpm's and poor 2.2 60'
    1972 Chevy K30 Longhorn P-pumped 24v Compound Turbos 47RH Just another money pit
    1971 Camaro RS 5.3 BTR Stage 3 cam, SuperT10
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  2. #767
    53 Chevy5's Avatar
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    Have I seen Rita's future
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    Seth

    God cannot give us a happiness and peace apart from Himself, because it is not there. There is no such thing. C.S.Lewis

  3. #768
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    Quote Originally Posted by 40FordDeluxe View Post
    Do you two have any plans to come to goodguys? Maybe take a ride down Grand in the Camaro or 40? ��
    We may try to make it this year, I've never been there before.
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    Seth

    God cannot give us a happiness and peace apart from Himself, because it is not there. There is no such thing. C.S.Lewis

  4. #769
    53 Chevy5's Avatar
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    I need some help here, I'm at a lose on what to do next about a driveline vibration. I have a triangulated Ford 8.8 and a 4L60E, and I have a vibration at about 73 mph that I cannot get rid of, it seems to intensify a bit when you let off the gas. The things I have done is have my drive shaft rebalanced three times by different people, tires have been balanced twice and since then I've even replaced the rims .
    And balanced again of course. There's no spacers up front, I think I have 1/2 inch spacers in the back. All the mounts are new and good. Here are my driveline angles, the three separate ones are done by me off the balancer, drive shaft, and I removed the drive shaft and went right against the yoke flange.The fancy one is from a Tremec app. I've adjusted things up and down and nothing makes a difference I'm at a loss. The only thing I'm wondering is the 8.8 rear ends run an offset drive shaft, I'm starting to wonder if that is the problem. I have 23k miles on it this way, and we're planning a trip to Yellowstone, I would sure like to get it fixed.
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    Last edited by 53 Chevy5; 08-01-2023 at 07:16 PM.
    Seth

    God cannot give us a happiness and peace apart from Himself, because it is not there. There is no such thing. C.S.Lewis

  5. #770
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    I know your supposed to have the same angle on both ends. Sounds like you've had it out a few times so clocking it different has already been done. Did they have a really high quality machine for the tire balancing, I know the methods and machines are not all equal. Sometimes tires can have a bad belt that makes for a vibration, do you have any other wheels you can try?
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  6. #771
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    I'll need to refresh my memory but I do not think they should both be down angles. 1 up and 1 down and within a degree with the suspension loaded.
    But that's my memory talking!
    Under edit - is the driveshaft "In Phase"?

    More editing - maybe this will be helpful? https://www.youtube.com/watch?v=Idk3BVDVHq4 driveshaft phase video

    even more editing. LOL.. another video that may help. https://www.youtube.com/watch?v=YgNZfIR-8Ng You may find the double cardan joint info interesting.
    Last edited by 34_40; 08-02-2023 at 06:06 PM.

  7. #772
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    Seth,
    You only need two measurements, the transmission outlet and the differential pinion and they need to be very close to equal but opposite - tranny sloping down toward the back, and differential pinion sloping up toward the tranny. Basically, if you project a line through the transmission main shaft towards the back, and a second line through the differential inlet yoke towards the front those two lines will be parallel. Ideally the two angles will be less than about 3 degrees.
    Mike P and 40FordDeluxe like this.
    Roger
    Enjoy the little things in life, and you may look back one day and realize that they were really the BIG things.

  8. #773
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    What Roger said.

    To expand a bit, depending on who you talk to a lot of guys will run the pinion angle on the differential down 1-2 degrees. The reason for this is, especially under acceleration, the pinion gear will tend to try to walk up the ring gear raising the pinion slightly. Supposedly even just cruising the pinion will raise a little bit.

    Normally when I set pinion angle I shoot for 1 to 1 1/2 degrees down on the differential for a street car.

    As far as the offset to the side it should not be a problem as long as the center line of the differential pinion and the center line of the transmission are parallel. If pone or the other is twisted a little it can set up vibrations.



    .
    Hotrod46 likes this.
    I've NEVER seen a car come from the factory that couldn't be improved.....

  9. #774
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    The offset of the 8.8 was one thing that bothered me on the 40 when I had one in it. But, on the other hand, I have seen many, many, over the road semis and straight trucks where the pinion was off set and the drive shaft wasn't perfectly straight and they run for hundreds of thousands of miles to millions and I've always found it odd but they work. I've ran pulling trucks at 6* up before on the street for a long time and they never developed any vibrations. My Camaro has a vibration at about 70-73. It has done it since I put it together. I am beginning to wonder if it is my thrust bushing on my tail shaft of my trans. Everything I have tried to remedy it has really done nothing noticeable. Is your 4L60E a slip yoke out put?
    Last edited by 40FordDeluxe; 08-03-2023 at 10:31 AM.
    Ryan
    1940 Ford Deluxe Tudor 354 Hemi 46RH Electric Blue w/multi-color flames, Ford 9" Residing in multiple pieces
    1968 Corvette Coupe 5.9 Cummins Drag Car 11.43@130mph No stall leaving the line with 1250 rpm's and poor 2.2 60'
    1972 Chevy K30 Longhorn P-pumped 24v Compound Turbos 47RH Just another money pit
    1971 Camaro RS 5.3 BTR Stage 3 cam, SuperT10
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  10. #775
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    Ford (and others) did the offset pinion to keep the needle bearings in the u-joint cup turning so they share the wear & loading. It was found to be a problem when the bearings stayed in one place, they would cut into the journal and self destruct.

  11. #776
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    I'm starting to think I'm barking up the wrong tree and something else is the problem. The engine to 3.5 down so I put the pinion at 3.5 up and it was noticably terrible in the back. The yoke coming out of the trans was nearly straight and yoke on the rear end was way crooked and I put the Tremec angle app on there and it gave me all kinds of red flags. So then I thought maybe I need to do more math. I took the motor deg and subtracted the drive shaft angle and matched the rear end to that angle and nope, same vibration. If I put the transmission in neutral when the vibration is going on, nothing changes , at least I don't think it does, but I'm doing 80 MPH runs on a black top looking for cops so these are not long-term tests lol. I think it may be a little bit worse tonight, and I have the rear end pointing down more. I'm thinking about giving up on measurements and just angling it little bits at a time and driving it everyday to see if it gets better or worse. Maybe there is just that much driveline transfer from the frame to the cab, I don't know.

    Ryan, it is a slip yoke output, I was checking that out tonight, it's maybe a little loose, I'm not sure how to tight their supposed to be.
    Last edited by 53 Chevy5; 08-03-2023 at 08:50 PM.
    Seth

    God cannot give us a happiness and peace apart from Himself, because it is not there. There is no such thing. C.S.Lewis

  12. #777
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    Mine is a little loose too. My vibration I swore was the LH front tire. I put new tires on it and same little vibration. I put pinion shims on top of the springs to raise it a little and like you no change. I tried lowering the angle and it didn't like it at all. I just chalked it up to a worn trans and I'll live with it. It's not a bad vibration but it is just annoying.

    Mike, I got sent to a spicer class years ago and they flat out stated that a u joint with a zero operating angle will fail faster than one that doesn't get greased regularly. I found that very surprising but they obviously know what they're doing.
    53 Chevy5 and Hotrod46 like this.
    Ryan
    1940 Ford Deluxe Tudor 354 Hemi 46RH Electric Blue w/multi-color flames, Ford 9" Residing in multiple pieces
    1968 Corvette Coupe 5.9 Cummins Drag Car 11.43@130mph No stall leaving the line with 1250 rpm's and poor 2.2 60'
    1972 Chevy K30 Longhorn P-pumped 24v Compound Turbos 47RH Just another money pit
    1971 Camaro RS 5.3 BTR Stage 3 cam, SuperT10
    Tire Sizes

  13. #778
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    "...... I am beginning to wonder if it is my thrust bushing on my tail shaft of my trans.....


    Ryans comment triggered a memory for me. My 57 Plymouth always had a drive line vibration above 75 MPH, not horrible but noticeable.. When I was getting it ready to drive back to Illinois a few years ago I decided to address it........figured it was an out of balance drive shaft (it was an unmodified factory drive shaft from some MOPAR). The 57 Plymouth had 4.10 gears and an OD 4 speed so the drive shaft is spinning pretty good at 75 MPH).

    Anyway when I went to pull the driveshaft I noticed a slight leak at the tail tail shaft seal and the the yolk had noticeable play. Put a new tail shaft bushing, new yolk and seal and the vibration was gone.

    Not saying that's your problem, but it might be something to look at.


    .
    I've NEVER seen a car come from the factory that couldn't be improved.....

  14. #779
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    It's kind of interesting how yours, Ryan's and my vibration all start at about mid 70's mph. And like yours and Ryan's, it's not terrible it's just noticeable and it bothers me. According to every video I have watched, it has been set up dead nuts on, but I cannot get my motor below a 3.5 angle without major work. I noticed my tail shaft has slight sleeping as well, I think that's going to be my next step.
    Seth

    God cannot give us a happiness and peace apart from Himself, because it is not there. There is no such thing. C.S.Lewis

  15. #780
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    Quote Originally Posted by 53Chevy5
    The yoke coming out of the trans was nearly straight and yoke on the rear end was way crooked and I put the Tremec angle app on there and it gave me all kinds of red flags.
    I'm probably being dense, but I don't understand what you mean by the yoke on the rear end being "...way crooked". Are you saying that the yokes welded to the driveshaft that hold the universal joints are not aligned in the same plane? There's a lot of info out there on phasing u-joints and proper angles. Here's one from Belden - https://www.beldenuniversal.com/know...-joint-phasing
    If your driveshaft yokes aren't in phase that could be your problem, but Mike P's idea of the tranny tailshaft is also a great idea to check.
    Roger
    Enjoy the little things in life, and you may look back one day and realize that they were really the BIG things.

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