Prop Shaft G506

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Tonywan Kanobby
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Prop Shaft G506

Post by Tonywan Kanobby » Sat Feb 20, 2021 4:11 pm

Hey guys,

How are ya doing ? For me, just hacking around as usual. Did have a situation with Olive that I paid some attention to. Thought I’d share even though it’s no big deal. Need to make a little noise :lol:

So while I usually drive around with my milled out “hub caps”, come winter or when ever I feel I want to use 4wd I install my driving flanges. They are always in the truck ready to go. Well I had the driving flanges installed but not in 4wd and was rolling down the highway and this pesky little vibration would creep in right at about 35 mph, become more vigorous at about 40, and at about 45+ would become less noticeable (of course we are getting airborne at that point, right !?).

Alright, I’ll get to the point. I suspected the front drive shaft so I took it off, and voila, that was it. Upon further review it was clear that the slip yoke and spline were done wore out. Probably 1/4-3/8 inch deflection.

Went to an old school shop back in “the old town”
and had er fixed up. Was shocked at the cost but what else could I do ? Here are some pics. Oh, and btw, the new spline measures out at about 1 1/2 inches (1.475). Have not installed yet. Hope they balanced her well.

Take care all.

Tony
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kelley
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Re: Prop Shaft G506

Post by kelley » Sun Feb 21, 2021 12:34 pm

Hi Tony,
Nice to hear that you're keeping that old girl in tip top shape.
IMO that's not unreasonable for what they had to do, trucks and truck parts just plain expensive.
Kelley

M35a2duece
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Re: Prop Shaft G506

Post by M35a2duece » Sun Feb 21, 2021 12:56 pm

These trucks aren’t supposed to vibrate? :o :D :lol:

Glad to see your keeping history alive!

Joe Gopan
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Re: Prop Shaft G506

Post by Joe Gopan » Sun Feb 21, 2021 1:09 pm

I have NOS WWII OEM G-506 Jack Shaft available.
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HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
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Tonywan Kanobby
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Re: Prop Shaft G506

Post by Tonywan Kanobby » Sun Feb 21, 2021 4:21 pm

Appreciate the comments guys.

Yeah Kelley, sometime the “squeaky wheel” gets loud enough for even me to hear it ! 😝

No doubt it’s all about the good vibrations when behind the wheel of these beauties, Duece.

Joel. What do you mean by jack shaft ? Have you got nos prop shafts ? Slip yokes ? And are they the same front and rear ? I’ve never checked.

Joe Gopan
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Re: Prop Shaft G506

Post by Joe Gopan » Sun Feb 21, 2021 4:48 pm

I have one NOS CV-3659934 Propeller Shaft, Transmission to Transfer Case Left in stock. Will check for remaining NOS Slip Yokes.
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO

zoob
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Re: Prop Shaft G506

Post by zoob » Mon Feb 22, 2021 1:42 pm

Both front and rear prop shafts are the same length. I have some NOS in the box...but...and there is always a but...I am in Australia.

Warren Duchesne
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Re: Prop Shaft G506

Post by Warren Duchesne » Tue Feb 23, 2021 6:39 am

Joel I would be interested in a coupe of slip yokes. Let me know. Thanks

D.R.H.
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Re: Prop Shaft G506

Post by D.R.H. » Tue Feb 23, 2021 11:20 am

Don't feel too bad Tony. I was helping a friend with his Scout Car. I warned him not to over-spin the engine but he didn't heed. He took it on the freeway and 'just kept up with traffic' sending a connecting rod through the side of the block. So he wanted to install a Chevy 292 with an SM 420 Trans. After spending hours at Cannon Engineering in No. Hollywood, the intermediate shaft was finally finished, the cost was about $625.00. WHEEW :shock: .
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Dr Deuce
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Re: Prop Shaft G506

Post by Dr Deuce » Tue Feb 23, 2021 4:12 pm

What did he do with the brake and clutch pedals? They bolt to the bellhousing on the original bellhousing and engine.
Stephen Keith AKA Dr Deuce
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Tonywan Kanobby
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Re: Prop Shaft G506

Post by Tonywan Kanobby » Tue Feb 23, 2021 7:55 pm

Well Dave, that story makes my deal look good !

Not that this really applies “Doctor”, as the 292’s bell housing is the same as the V8 engines when they made that switch and of course it accepts the SM420. But I also have an SM420 with my 235. For years I had been using or storing my truck and one day I was under the rig and became horrified when I saw the weld that attached the shaft that accepts the clutch and brake pedals (see the red bell housing). Well, maybe the weld’s penetration is adequate but I found out that Jim Carter’s sold a modified bell housing for those with early Chevies that want to run the more modern trannies. So I purchased it and installed that (the gray one). I liked the separate pieces, including gussets that seemed to be modified in a more proper manner. It’s been a few years now. So far so good.

BTW, I sure would like one or two of the nos driveshafts you’ve got in the “land down under”. Will need to bring a lot of gas for my boat. Maybe this summer. Hey, wait a minute. I’ll probably run into ice at some point. Oh well. :wink:

Tony



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Dr Deuce
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Re: Prop Shaft G506

Post by Dr Deuce » Wed Feb 24, 2021 6:48 am

Thanks for the pictures and explanation.

I don't suppose that the Chev crashbox has the same mounting as the tranny that you used with that 292 modified bellhousing.

I had always supposed that you could possibly flip the brake/clutch pedal shaft and make a bracket that attached to the frame.

I guess I need to dig out my Chev 292 for one of my projects now!

Driveshafts? yes I have some extras.
Stephen Keith AKA Dr Deuce
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9 CCKWs 6x6

7 Chevys 4x4


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