Can you help? Driveshaft Question....

Hello!

Newbie to the group here - we have already found tons of invaluable information on the board, so thanks! We are restoring a 1963 Series 62 Convertible. We are wondering if anyone knows of a source to buy the propellor yoke flange (that bolts to the pinion flange) for the driveshaft? One of our ears partially broke off. Not sure if we can buy just the yoke flange as an aftermarket part, or if it has to be rebuilt by a welder/fab guy? Maybe a salvage yard for a source? Again, any help would be appreciated! I have attached a pic of the part that is broken for reference (highlighted in red). Thank you in advance!!!!

Chris & Andy

Views: 64

Comment

You need to be a member of 63/64 Cadillac Website to add comments!

Join 63/64 Cadillac Website

Comment by Jason Edge on May 30, 2021 at 6:57pm

Chris, I am going to guess that corner didn't just break off from normal torque stress and instead struck something either on or off the car?   These are pretty thick metal and you have Four Grade 8  7/16" diameter bolts securing the flange ends together. 

The problem in finding that part may be that there is a super high demand for those rear sections as the CV joints wear out and cause vibration and it's not like there are many just laying around for parts. I have a long back log of customers on my Wait List looking for VG tight rear sections but I do sometimes get loose ones in that are good cores for rebuild or to use for donor parts to rebuild your rear driveshaft section. Rebuilding the rear driveshaft section, from at least what I have observed over the last 25 years, is a crapshoot unless you are 100% sure the company/person can do it right. I've sold nice tight rear ends to customers that have spend over $1000 to have their driveshaft rebuild several times, only to continue to vibrate. 
So, I think your options are as follows:

1 - find another VG rear section to swap in

2 - find a donor rear section to either rebuild or use the rear flange for yours for rebuilding

3 - put a thick washer behind the bolt, bolt it up and go! 

Without knowing the history of how this happened or the condition of your rear driveshaft section (is it nice and tight with no vibration or loosey goosey and needs to be rebuilt anyway) but personally if it was a good rear driveshaft section otherwise I would find a thick 7/16"  washer (I've got some in my stash), and use it behind the lock washer to better distribute torque from the bolt head to the flange. The bolt is 1" long so you should still have plenty of bolt penetration to securely hold. You have 3 other beefy Grade 8 bolts that help keep it tight against the pinion flange and my bet would be that it would hold up as long as you drive the car. 
Of course if you need to rebuild the rear section anyway AND CAN FIND THAT REAR FLANGE, then it is a no brainer to go ahead and fix it. I am just thinking through the fact you might not be able to readily find that piece.

Photos

  • Add Photos
  • View All

Forum

Classic Cadillac Parts For Sale - Misc Items

Started by Jason Edge in For Sale. Last reply by Jason Edge 1 hour ago. 275 Replies

I have posted a few Misc items over on my Classic Cadillac Parts Facebook page at…Continue

Tags: classic cadillac parts, classiccadillacparts

Dash Grille - Adhesive?

Started by Chris McBride in General Discussion. Last reply by Chris Codd 2 hours ago. 2 Replies

This dash grille likes to vacation from the dashboard.  Is it properly secured with an adhesive and, if so, what adhesive?  If so, what type?  If not, how is it secured?Thank you.…Continue

Wiper Blades for a '63?

Started by Karl Schwarz in 1963/64 Cadillac Specific Discussion. Last reply by Jason Edge 19 hours ago. 3 Replies

Is there anything special about the wiper blades I should use on my '63 Series 62 convertible? I have the original arms with the original blade brackets. I got Anco N-18R blades that should fit. I…Continue

Resistance wire removal or replacement

Started by Anders in 1963/64 Cadillac Specific Discussion. Last reply by Jason Edge 21 hours ago. 38 Replies

Resistance wire removal or replacement.If installing an electronic ignition system the resistance wire most likely has to be removed or bypassed. There are several ways to do this and the solution…Continue

Tags: wire, resistance

Blog Posts

Rumble Sound at 55-60 mph

Posted by Ray Schick on September 20, 2021 at 10:45pm 6 Comments

64 Coupe DeVille , while driving at 55-60 mph I have a oscillating rumble sound . Steering wheel does not shake or vibrate . Transmission mount looks good .Tires were replaced 2 years ago balanced and rebalanced recently. Axel bearings were just replaced, rear differential assembly was just replaced with a Posi track ,pinion bearings good. Fresh gear lube. Driveshaft checked and balanced the other day ,new center bearing installed and new bearing carrier assembly too. Trying to figure this…

Continue

1963 series 62 convertible transmission issue

Posted by Matthew VanDeWater on June 22, 2021 at 3:03pm 1 Comment

Hello I've been restoring a 63 for way to many years. Down to almost done, but have issue with trans linkage, when column in park shift rod 2 inches short. everything original. been trying to find picture of manual rod hooked up from under car to see position of linkage. was wondering if anybody has access for pictures. I wanted to see if my manual linkage is bent  wrong out of the trans if somebody dropped the trans or something. Doesn't make sense why it doesn't work. Thanks for any input…

Continue

New vehicle in the club

Posted by Patrick Westphal on June 17, 2021 at 4:00pm 1 Comment

I was successful in getting a vehicle from the New York contact I talked about at the last club meeting. I am still trying to figure out how to post a picture of the vehicle that is tied with this comment so if you see a random picture of a black convertible in a yard, that's me haha.  …

Continue

Torque converter grab when idling in Drive

Posted by Cliff Johnston on June 14, 2021 at 8:47pm 2 Comments

Hi Everyone, been quite a while since i have been on here.

I have had an issue with the idle on my 64 Coupe Deville ever since i have had it.

With the Idle set high enough that it is smooth, but still a nice idle, the RPM seems only slightly too high for the stall of the Torque Converter. And therefore it tends to sit there and grab and lunge a bit. So until now, i have been putting the car in Neutral at the lights to stop this happening.

I've had the car dyno tuned and…

Continue

Videos

  • Add Videos
  • View All

© 2021   Created by Jason Edge.   Powered by

Badges  |  Report an Issue  |  Terms of Service