Author Topic: Axle upside down?  (Read 2852 times)

Offline ken4444

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Axle upside down?
« on: April 20, 2018, 10:05:16 PM »
My C10 has a spring-under conversion. I happened to notice the casting numbers on the differential housing are upside down.  What's the likely story here?  Is this legit, a total hack, or something in between?  I'm thinking it doesn't matter from a mechanical perspective, but my experience here is minimal.






Offline VileZambonie

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Re: Axle upside down?
« Reply #1 on: April 21, 2018, 06:20:17 AM »
It's flipped, meaning over the spring, not upside down. If the vent hose was pointing toward Earth and in fact upside down, you'd be going backwards when you go forward.
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Offline ken4444

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Re: Axle upside down?
« Reply #2 on: April 22, 2018, 09:10:01 PM »
Good point on the vent hose.  That is in the right place.  Is it common to see the casting numbers upside down on GM or other axles?

Offline VileZambonie

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Re: Axle upside down?
« Reply #3 on: April 23, 2018, 05:13:22 PM »
Depends on whether you're standing on your feet or on your head.
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Offline ken4444

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Re: Axle upside down?
« Reply #4 on: May 18, 2018, 05:22:18 PM »
Another question: Are the axle shock mounts OEM?

Offline VileZambonie

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Re: Axle upside down?
« Reply #5 on: May 18, 2018, 05:59:51 PM »
no they are aftermarket. Probably came with the flip kit
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Offline ken4444

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Re: Axle upside down?
« Reply #6 on: May 18, 2018, 07:01:22 PM »
no they are aftermarket. Probably came with the flip kit

So this begs the question...  if I move the axle back under the springs, what modifications will be required?

Offline VileZambonie

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Re: Axle upside down?
« Reply #7 on: May 19, 2018, 06:21:14 AM »
Shocks with the correct length/travel. Most likely 2" longer.
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Offline ken4444

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Re: Axle upside down?
« Reply #8 on: May 19, 2018, 08:28:59 AM »
Shocks with the correct length/travel. Most likely 2" longer.

I'm also thinking that the pinion angle will require some consideration as well.

Offline Irish_Alley

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Re: Axle upside down?
« Reply #9 on: May 19, 2018, 08:30:44 AM »
shouldnt if he utilizes the stock spring pads
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Offline VileZambonie

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Re: Axle upside down?
« Reply #10 on: May 19, 2018, 11:03:50 AM »
shouldn't what?

Shocks with the correct length/travel. Most likely 2" longer.

I'm also thinking that the pinion angle will require some consideration as well.

Yes you should always check the pinion angle after suspension or driveline mods
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Offline Irish_Alley

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Re: Axle upside down?
« Reply #11 on: May 19, 2018, 11:44:51 AM »
if he uses the stock axle perches that are still on the axle, the pinion angle should be back at the stock location
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes