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Old 09-02-2020, 07:15 PM   #1
Asshat
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Location: South Orange County CA
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Re: HO72 rear axle

Quote:
Originally Posted by RPOZ11 View Post
They are geared low.
I believe mine is a 4:11.
Originality.
Decided to run the HO.
(I have an extra HO drum to drum)
Gear Vendor will assist in my highway mileage ; but probably not enough.
I think there was a 3:90 gear GM offered; or something like that.
Can't recall the 3 series ratio.
Very hard to locate those.

I have a 14 Bolt that I considered using.
3:42 posi in that one.
Just need to move and install spring pads correctly onto it in order to use that one.
I also read somewhere that they make the tires chirp when turning, is this an issue to be concerned with?
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Old 09-03-2020, 01:22 PM   #2
bry593
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Re: Eaton HO72 rear axle

Lockers will make noise, cause poor handling (understand) and accelerate tire wear. They are a terrible addition for a street driven truck. On the other hand, if you use your truck as a truck, towing things and hauling through fields and mud, a locker is a blessing.

For good handling on street you want limited slip (actually does slip). These never lock completely and one tire will usually spin faster than the other. These are a best fit to most motorist driving styles. These are not available for HO52/72.
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Old 02-05-2021, 12:46 PM   #3
Andy4639
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Thumbs up Re: Eaton HO72 rear axle

Hello RPOZ11,

I'm loving the info you have posted here. I have this same rear end in my 67 Ramp truck. Per say by the numbers you posted, except mine has no tag with it.
I'm trying to decide which way to go on the rear E brakes. I have none of the parts for them for it. I'm guessing from your info finding them will be a job in it's self.
With that being said do you have the info for the disc brakes you used and do you know of any full kits with the E brakes as well. I know you posted about making up a E brake spring. Any and all info is appreciated on this. Thanks
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver
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Get out and drive the truck this summer and have some fun!
It sucks not being able to hear!

LWB trucks rule, if you don't think so measure your SWB!
After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.
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