Quote:
Originally Posted by Rednwhitec20
Is there any differences externally between the ho52 and the ho72?
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One of GM's great mystery products, well Eaton's actually.
Lots of debate on this, some 52's have the preload bolt on the side of the ring gear, some don't. some have the larger brake shoes (11" VS 13") and some don't.
The 72's all have the load bolt and larger brake shoe's.
the housing is suppose to be heavier duty on the HO-72.
I don't think anyone has pegged one item that differentiates one from the other.
Here's a thread from a while back, post 28 has a chart for 71's.
http://67-72chevytrucks.com/vboard/s...d.php?t=590959