The Stovebolt Site Forums The Shop Area Driveline More Eaton H052/072 Questions . . .

As I understand it, Eaton 052s and 072s are alike as far as the innards are concerned. Is this the case? Also that the H052 is capable of carrying 5200 lbs and is found on 3/4Ton trucks while the H072 is capable of carrying 7200 lbs and is found on 1Ton and larger trucks. Is this correct? The third member of both is interchangeable? I have What I believe to be an H052 that has a whine when not under load. I believe I'll be looking for a replacement soon. Should I be looking for a 3.90 or 3.73 DANA 60 instead?

Best wishes,

Les

HO 52 and HO 72 internal parts do not interchange. The complete carrier assembly will swap. The 4.10:1 ratio is terribly scarce- - - -us round tracker guys used most of them up in the late 70's/early 80's in dirt track cars. There will be a lot more replacement parts and a better selection of ratios with the Dana 60's, but a lot of the axle housings are too wide to fit between the fenders very well in a a 3/4 ton. A 1-ton flatbed chassis with dual rear wheels (Dana type 70) won't have as much of a tire clearance problem- - -no fenders to deal with! Duals don't work well with a type 60, the hub bearings aren't heavy enough for the load range of dual wheels.

Don't worry much about a whine on a float condition- - - -they will run for years that way!
Jerry

Thanks Jerry! I'm trying to deal with a 3/4 Ton Panel Truck, too, so I got virtually NO play room from the body to the frame AND coil springs. I know a bit about DANAs but nothing about Eatons because the delivery fleet I used to maintain were all DANAs. I can always learn.

Les

I put a Dana 60 from a mid-70's 3/4 ton in a 59 Burb, and had major tire/fender clearance problems. It's a great rear axle, with limited slip center section and all, but I had to do some pretty severe hammering on the inner fenders to get some tire clearance! When the Burb goes back on the road with a Cadillac 500 and a Turbo 400, I'm going to custom-order some special offset wheels to allow me to rebuild the wheel openings to normal appearance. When that happens, I'm also planning to go with a narrowed front crossmember from an IFS 3/4 ton to have 8-lug wheels all the way around.
Jerry

I just put a Dana 60 from a 69' F250 in my 49' 3600. The width is almost identical drum face to drum face and spring perch to spring perch.

Just getting back in the black enough to do some major work on my 68 C-20. Job one is to swap out that Eaton rear for a Dana with, hopefully, a more highway friendly ratio. What are my options -- or to be more precise, what should I be looking to scavenge from? Anybody out there do the swap I'm contemplating????

After doing a bit of nosing around on other sites, this is what I've come up with:

Basically, my primary option for getting a more highway friendly rear is a 73-87 14-bolt rear, with the lower ratio I'm looking for primarily in diesel p/u's (a rarity, I bet) and Suburbans. But I'm looking at a 3" wider axle, so need to backspace my wheels 1.5" a side to fit.

So, I take it the 14-bolt is a corporation rear rather than a Dana 60????

By the way, want to keep the 8-lugs. And though mine is a 68 model, it was built in late 67. One site I was looking at said Chevy started putting Dana's into the C-20 in 68. The GMC's had Danas, I'm told -- dammit.

Yes, the 14 bolt is a GM corporate axle- - -a very good one, BTW, somewhat heavier-duty than a Dana 60. The dual-wheel 8-lug Dana is actually a Type 70, not a 60. The type 60 is intended to be a heavy-duty 1//2 ton rear end, or a 3/4 ton when it has 8 lug wheels and full-floater bearings. It's possible to install longer lug studs in type 60 hubs and run dual wheels, but the brakes are a bit too light-duty, and the wheel back spacing isn't exactly right for an average 1-ton chassis.
Jerry

H'rod,

Thanks. Thought that was the case. Mine's not a dually. But you may be addressing more than one person in your reply.

SCJEFE- Most full float 14 bolts you'll find are either the 67" WMS or the 63" WMS. The 67" is what you'll typically find in a single wheel 3/4 or 1 ton truck. The 63" is usually a dually rearend. You can use the outer hubs from a dually truck and make a 67" axle into a 63" axle or you can even use hubs from a Eaton axle and make a 65" axle. You'll have be creative with the brakes though. You'll need narrower brake drums or move the backing plate flange inboard.

Try www.photobucket.com/whitedog76pics

I have a 63", 67", and picture of one with the Eaton hub.