whats the dif between a ho72 and a ho52?

[jaybatta]

Originally Posted by Jason Banks

My 1967 K20 HO52 has provisions for parking brake cable.

I read through the thread here and couldn't be certain if this diff is on your 1968 or 1970 truck?

Figuring out what brakes are on the differential, might help clarify if it is original to the truck. Or, what it is from. I notice that the brake line connection to the wheel cylinder is different that what is on my 1967. Can't remember if the 1967 brakes were a 1 year only thing though. I don't have that banjo bolt, but have an inverted flare fitting.

My truck is a Heinz 57.. lots of parts from different years. But it is a 72 2wd frame converted to 4wd with a 68 body. As far as brake fittings, it’s all just whatever I could find or make to keep me going. I’ve considered getting a disc brake conversion kit hoping it’ll have have the correct backing plates with parking brake cable provisions.