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#1
12-07-2013, 10:21 AM
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'65-'66 Rear Axle Interchange Question
I always thought that big-car rear axles were essentially the same from '65 to at least '70, but recently had someone tell me that a '66 axle is wider overall than a '65 axle. Doesn't sound right to me. Can anyone shed any light on this? Thanks!
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#2
12-07-2013, 11:07 AM
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Quote:
Same. Check the other threads in archives. Entire assembly is identical '65-6. Axles will pull out and stick in to either one. '65-70 internals swap except for '69 GP.
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"If you do everything you'll win" -LBJ 13 Smiles per Gallon: 66 Bonneville wagon 66 Bonneville 2d HT - In perpetual progress |
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#3
12-09-2013, 01:06 AM
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same ...
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1970 GTO Convertible 455 Ram Air M-21, Atoll/Blue/Black, Hood Tach, 3:31 12-Bolt Posi, A/C, Console 1966 Grand Prix 421 Tripower 4spd, Marina Turquoise/Turquoise, a/c, console, posi, reverb. pa, pb, ps, remote mirror, mats 2010 Dodge Challenger R/T Classic, 6spd Hemi, Detonator Yellow, black stripe, black leather |
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#4
12-09-2013, 10:53 AM
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Yep 65-66 direct swap.. 67, 68-70 housings vary. gears swap freely 65-70 though
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63 Catalina coupe 455 budget drag car 11's 1/4 , 7.4 1/8th 66 Star Chief Executive 57k mile 69 Le Mans 2 dr HT 350 85k mile 15 sec 1/4 69 Firebird 400 Burgandy/Black 70 Olds Rallye 350 F85 4 speed 3.91's 70 Olds Cutlass Cruiser Red Wagon 350 101k miles 15 sec 1/4 12 sec w 455 74 Cheyenne Super C10 LWB Gen 6 454 w ZZ502 cam 3.07gear 13.1 1/4, 8.3 1/8 2020 RAM 1500 SLT 4x4 5.7 A8 Hemi 2007 Hummer H3 3.7 liter turd 2019 Chevy Spark petrol car 38 mpg |
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#5
12-09-2013, 12:01 PM
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Rear Axles
Hi Larry
Not trying to hijack this thread, just wanted to thank you for the lead on the 3.08 posi carrier & gears. Worked out GREAT  Thanks, Ron
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Another Red Light Nightmare  1966 Martinique Bronze 2+2 428 tri-power auto, black top & bucket seat interior, pass recliner, ATC, Cruise, AM FM, Reverb, Wood wheel, tilt, ps, pb, pw  1966 Catalina, Barrier blue with a white vinyl top, tilt, AC, ps, pb, bucket seats with console 68 428 4 bolt, 4 speed M20 and a 66 tri-power project. Semper Fi |
| The Following User Says Thank You to Rapdron For This Useful Post: | ||
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#6
12-10-2013, 02:56 PM
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FWIW: the pinion seal shows a different part number for the 65 and the 66 to 70. I've never compared the seals to see if there is a machining difference in the carriers or not...
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65 Bonneville Brougham 4DHT 65 Grand Prix 2DHT......now parts 65 Catalina 2+2 2DHT 65 Catalina Safari 4DSW |
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#7
12-10-2013, 06:44 PM
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Quote:
The pinion seal started to leak some time later and my diff guy was having difficulty getting a seal. I would assume he was looking for a '66 seal and I never told him it was a '65 diff. He eventually solved the problem but its something to keep in mind for the future. Thanks Ian 
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#8
12-10-2013, 08:21 PM
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Rock Auto calls for SKF 19310 for '65 and SKF 19273 for '66. They are definitely different. Here are the specs:
http://www.rockauto.com/catalog/more...228&cc=1350234 http://www.rockauto.com/catalog/more...254&cc=1350111
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My Pontiac is a '57 GMC with its original 347" Pontiac V8 and dual-range Hydra-Matic. |
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