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- - Trouble finding correct pinion seal (https://67-72chevytrucks.com/vboard/showthread.php?t=855441)

data89

11-03-2024 01:29 PM

Trouble finding correct pinion seal

'69 C10 step side, 12 bolt, stock truck. 8 seals to choose for my truck from Oreilly's. So far I've chosen the wrong one. What do I need to know to get the right seal other then taking the old seal for comparison and ordering all the available seals? Also what's the difference between HO and HA? I've seen HO to be for 3/4 and 1 ton trucks, yet the HO seals look like they would be the right dimensions. Axle says HO 0325.

JDL	11-03-2024 07:24 PM

Re: Trouble finding correct pinion seal

I just did this one yesterday Precision Differential Pinion Seal - 8460N

data89

11-03-2024 09:33 PM

Re: Trouble finding correct pinion seal

Quote:

Originally Posted by JDL (Post 9351226)

I just did this one yesterday Precision Differential Pinion Seal - 8460N

Great to know JDL. Finally that's exactly what I've finally arrived at. Thanks.
By the way, can you also tell me what the number on my axle means as far as gear ratio? It's stamped HO 0325. I know, I know, it's a dumb question for those who know.

uncle

11-03-2024 10:51 PM

Re: Trouble finding correct pinion seal

The book I have shows HO to be a 4:11 posi traction.

data89

11-04-2024 09:46 PM

Re: Trouble finding correct pinion seal

Quote:

Originally Posted by uncle (Post 9351270)

The book I have shows HO to be a 4:11 posi traction.

Great, thanks for the confirmation, that was what I came up with finally.

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