Re: Is this the transmission I need? (833 od into Ebody)
[Re: Kern Dog]
#661820
04/06/10 03:49 AM
04/06/10 03:49 AM
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Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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 The trans you want will have the dual mounting positions. Mine didn't have the rear mounting position drilled/tapped from stock, but the mounting boss is there waiting for use. Before you start buying too many parts, you will want to figure out if the trans is usable. You'll want to evaluate the condition of the trans and familiarize yourself with the issues of that design if you're not already aware of them(floating shafts w/ aluminum case, input bearing retainer size, 3rd/4th gear position swap). Just some stuff you want to be aware of, especially the floating shaft thing, that can cause further damage if the aluminum case has been worn too much in that area.
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Re: Is this the transmission I need? (833 od into Ebody)
[Re: derekeh]
#661823
04/07/10 01:23 AM
04/07/10 01:23 AM
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Joined: Mar 2010
Posts: 357
Lake Elmo, MN
Evil Monkey
enthusiast
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enthusiast
Joined: Mar 2010
Posts: 357
Lake Elmo, MN
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I'm not sure what to look for to see if the floating shaft fix has already been done, but if the case is Aluminum, it needs the fix to live. The Iron cased 833 overdrive units do not need the fix, from what I understand. I had an Aluminum cased overdrive 833 behind the 360 in my Cuda, and did not know about the floating shaft issue until it turned into a box full of broken gears...
1974 'Cuda 360/TKO
1990 Ram Van
1998 Neon
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Re: Is this the transmission I need? (833 od into Ebody)
[Re: Kern Dog]
#661825
04/07/10 11:45 AM
04/07/10 11:45 AM
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Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo
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Too Many Posts
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Manitoba, Canada
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Quote:
The 383 bell can be machined to accomodate the larger bearing retainer, OR the bearing retainer can be turned down on a lathe. As far as the "floating countershaft" issue, it can be a problem in certain situations. If the shaft fits tight now and you don't drag race the car, you will probably never have a problem. With repeated abuse, the shaft will begin to shift and wobble out the hole that it is pressed into. The fix is to have the trans countershaft hole drilled oversized and fitted with a steel liner. The OD trans was only put behind slant six and 318 engines. I have yet to see a factory 360 or larger engine with this trans. Obviously the iron case trans is more durable as is, but the aluminum unit can live if you dont beat the heck out of it.
Yeah that's basically it, just didn't feel like typing it all. You'll either want to do an iron case or bush the aluminum one. Basically the shaft 'wallows' open it's hole in the soft aluminum case. If it's already wallowed open a bit, bushing can be tricky to drill for because it's location has to be exact for proper gear mesh. If it's marginal now, best bet is to get an iron case. If it's still good, bush it.
Also, 3rd and 4th gear positions are reversed. You'll want to flip the 3-4 shift lever over and may need to tweak the shift linkage a bit.
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Re: Is this the transmission I need? (833 od into Ebody)
[Re: derekeh]
#661826
04/07/10 12:07 PM
04/07/10 12:07 PM
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Joined: Jan 2003
Posts: 6,840
The Swamp
Sixpak
master
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master
Joined: Jan 2003
Posts: 6,840
The Swamp
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Quote:
I know very little about these transmission so Id like to make sure this is a good candidate for my car. Its a 70 cuda automatic with a 360 that im looking to convert to a 4 speed overdrive. The transmission I have has a long tailshaft with 2 shifter mounting positions that are both drilled and tapped. On the drivers side it has "6A 13 79" and "C-13546" stamped on it. Passenger side has "PP8332929" stamped on a pad. Is this the right transmission I need?
The 383 bell won't work for your 360, by the way...try to locate an OD bell for a 318. Your trans case - is it cast iron or aluminum? Aluminum and it's most likely an OD trans. The OD trans usually had only the front shifter mount tapped from the factory, unless someone tapped the rear mount already. You need the rear mount location for an e-body - the front mount location is stock for a B body, and most pickups and vans.
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Re: Is this the transmission I need? (833 od into Ebody)
[Re: Kern Dog]
#661829
04/08/10 04:59 AM
04/08/10 04:59 AM
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Joined: Mar 2010
Posts: 357
Lake Elmo, MN
Evil Monkey
enthusiast
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enthusiast
Joined: Mar 2010
Posts: 357
Lake Elmo, MN
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The problem with using an 833 from an Aspen or Volare is the F body cars use the same transmissions as the A body cars, with the short tail shaft. It can be done, but you need to fabricate a plate to mount the shifter, fabricate the transmission mount, get a longer driveshaft, and most likely fabricate the shifter rods. I had that setup in my Cuda for a short time after I turned my Aluminum cased 833 gears to dust. I had found an Aspen donor car in a junkyard and needed something to get the Cuda going again until I could get the correct 833. You might be able to do a little mix-and-match, though, and take an Iron case from an F body and mate it to the long tailshaft that you already have. I'm not sure what all would be involved with that, but I'm pretty sure it can be done, and it would eliminate the fabrication and driveshaft modifications.
1974 'Cuda 360/TKO
1990 Ram Van
1998 Neon
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Re: Is this the transmission I need? (833 od into Ebody)
[Re: derekeh]
#661832
04/08/10 02:51 PM
04/08/10 02:51 PM
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Joined: Jan 2003
Posts: 28,068
Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,068
Irving, TX
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Do not machine your bellhousing!
Take the front bearing retainer off the OD unit and have it turned to fit the bellhousing.
There's no secret to the larger retainer. It has the SAME DIAMETER bearing as the large bearing (most common) non-OD 833.
When I ran one, I had a machine shop turn it down and they didn't even charge me. It's a 5 minute job on a lathe, including setup.
Mine did have a side shaft that beat up the case. Too many miles on that poor old thing.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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Re: Is this the transmission I need? (833 od into Ebody)
[Re: derekeh]
#661835
04/09/10 12:12 AM
04/09/10 12:12 AM
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Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo
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Manitoba, Canada
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Quote:
Ok so what would I be better off doing? Combining my iron case and correct tailshaft or having the aluminum case machined?
If you have the aluminum case and it's still good, you can use it. Swapping the guts into an iron case is an easier fix than drilling for the bushing. Either will work, if you can get an iron case for cheap enough, go for it.
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