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09-19-2004, 12:10 AM | #1 |
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Join Date: Apr 2004
Location: Grant, Alabama
Posts: 504
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Difference between HO52 and HO72?
Theres a HO72 for sale that I am interested in, actually just the Detroit Locker it has. Is the HO52(what I have) the same as a HO72 as far as the carrier and Locker? Can I swap the carrier or can I remove the locker and swap it over to my HO52? Will a H072 center section swap over to my HO52? It supposedly has 4.10 gears, dont know what mine has yet. Thanks for any help.
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72 Chevy C20, SOLD (Dang it.) 09 Challanger RT six speed in all black. 74 Datsun 710 wagon, all 1.8 liters of screaming Datsun power. 73 C10 long bed, 350/350 combo, nice shape. |
09-19-2004, 12:46 AM | #2 |
Join Date: Dec 1999
Location: Eastern - Manitoba Canada, Winnipeg
Posts: 4,369
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You can drop the whole section in either rearend housing. I'm not sure about the carriers anymore... I dont have any that are not lockers, so I didnt have anything to look at to compare.
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Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife. |
09-19-2004, 02:52 AM | #3 |
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Join Date: Feb 2001
Location: Nikiski, Alaska
Posts: 477
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I found a single and obscure source (an antique Hollanders) from the late 50's that made me think the HO52's had 2 spiders and the HO72's had 4. IIRC, Detroits don't have spider gears, so there wouldn't be ANY difference. So the answer to your question is: assuming the pinion sticks out from the axle housing the same distance forward, they are completely interchangeable.
These rearends have been around since 1946 and changed slightly about 1960 and again in the late 60's. The only differences I have found in the pumpkin is the pinion (mentioned above) and the addition of the ring gear deflection bolt sometime in the 60's. I think.
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09-19-2004, 08:31 AM | #4 |
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Join Date: Apr 2004
Location: Grant, Alabama
Posts: 504
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Thanks, the H072 has four pinions from what I can tell in the pictures. Have no idea what my HO52 has, havent had the cover off yet. AS far as I can tell, the 72 has ball bearingings for pinion bearings and the 52 has tapered bearings. I have the original manuals but they dont tell me what sizes the ring gears etc. are, just how to take one apart.
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72 Chevy C20, SOLD (Dang it.) 09 Challanger RT six speed in all black. 74 Datsun 710 wagon, all 1.8 liters of screaming Datsun power. 73 C10 long bed, 350/350 combo, nice shape. |
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