So i found an A833 for sale. I currently have an a230 in my duster and i found this transmission for sale. it has been sitting for years and the owner believes it came off a 68 charger. i was wondering if anyone could help me identify the transmission better, i asked the owner for the serial number on the machined pad but hes not home yet. owner told me it has a 30 spline tailshaft. it is definitely missing quite a bit of parts but i wanted to see how reasonable it is to rebuild it or to at least take it apart to restore the parts and keep/sell the ones i cant use for my Duster. Im also not sure what would be the right price to offer here since the transmission is in rough condition. Any advice is appreciated.
Found A833
- Thread starter PredaFran
- Start date
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Alaskan_TA
Well-Known Member
A230 A bodies are wonderful creatures. I own one.
I would not change it.
Use the 4-speed money for gas and SPG. (Smiles Per Gallon) ;-)
I would not change it.
Use the 4-speed money for gas and SPG. (Smiles Per Gallon) ;-)
Professor Fate
Push the button, Max...
Personally, I would pass on it. It's rough, not complete, and B body 4 speeds are not a direct swap into A bodies. They're longer, the shifter is in the wrong location, etc. Save your money for an A body trans.
AJ/FormS
68 Formua-S fastback clone 367/A833/GVod/3.55s
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I wonder if it is financially feasible for a non-professional rebuilder to recondition a derelict manual trans. There is usually a reason why the trans was partially disassembled and then chucked into a corner.
Even just a kit and two synchronizers will drive your costs way up. Add a short M/S, a couple of forks, a new input gear, a short tail house....... and you see where this could end up.
Check the FABO sales forum; there are often members here offering good deals on complete, and correct, drop-in transmissions.
For a streeter, the A230 with the right rear gear, and a matching engine combo with a broad powerband can be fun........ for some.
But not me, I don't have a broad powerband;lol. As soon as you start upcamming you're gonna run into the wide splits problem.
The A230 ratios are
V8; 2.95-1.83-1.00; splits of .62-.55
/6; 3.22-1.84-1.00; splits of .57-.55
So whatever you rev to, the rpms will fall to those splits on the shifts.
Say you have a 230* cam and the power peak is ~5200, so you shift at 5500. On the 1-2 shift, your Rs will fall to 3400 (2.95low box); so you need a
powerband of 2100rpm. Say you have 150psi cranking cylinder pressure; Yur done; at 3400 your 318/340 is mired in quicksand. To get out of it, you will need a super low-gear rear end, or more cubes, or more pressure......
But it gets worse; the 2-3 split will drop your Rs to ~3000 for a powerband requirement of 2500rpm.
Now, consider the A833.The ratios are;
2.66-1.92-1.40-1.00, and splits of .72-.73.-71; all near to the same.
So when you rev to 5500 the Rs now fall to just 3960, for a
powerband requirement of just 1540!, which is perfect for that 230* cam in the low-pressure engine. In fact, you can run an easy 108/106 LSA instead of 114* or more. And that is a game changer. That will let you up-cam one more time, with very little loss in bottom end.... which means more peak horsepower ............. if the heads don't puke.
Conversely, you can down cam 1 size, to a 108/106LSA cam, have more cylinder pressure and so, with similar absolute peak power, but more torque at lower rpms. and better fuel mileage too.
Even just a kit and two synchronizers will drive your costs way up. Add a short M/S, a couple of forks, a new input gear, a short tail house....... and you see where this could end up.
Check the FABO sales forum; there are often members here offering good deals on complete, and correct, drop-in transmissions.
For a streeter, the A230 with the right rear gear, and a matching engine combo with a broad powerband can be fun........ for some.
But not me, I don't have a broad powerband;lol. As soon as you start upcamming you're gonna run into the wide splits problem.
The A230 ratios are
V8; 2.95-1.83-1.00; splits of .62-.55
/6; 3.22-1.84-1.00; splits of .57-.55
So whatever you rev to, the rpms will fall to those splits on the shifts.
Say you have a 230* cam and the power peak is ~5200, so you shift at 5500. On the 1-2 shift, your Rs will fall to 3400 (2.95low box); so you need a
powerband of 2100rpm. Say you have 150psi cranking cylinder pressure; Yur done; at 3400 your 318/340 is mired in quicksand. To get out of it, you will need a super low-gear rear end, or more cubes, or more pressure......
But it gets worse; the 2-3 split will drop your Rs to ~3000 for a powerband requirement of 2500rpm.
Now, consider the A833.The ratios are;
2.66-1.92-1.40-1.00, and splits of .72-.73.-71; all near to the same.
So when you rev to 5500 the Rs now fall to just 3960, for a
powerband requirement of just 1540!, which is perfect for that 230* cam in the low-pressure engine. In fact, you can run an easy 108/106 LSA instead of 114* or more. And that is a game changer. That will let you up-cam one more time, with very little loss in bottom end.... which means more peak horsepower ............. if the heads don't puke.
Conversely, you can down cam 1 size, to a 108/106LSA cam, have more cylinder pressure and so, with similar absolute peak power, but more torque at lower rpms. and better fuel mileage too.
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gzig5
Well-Known Member
You are looking at a pile of money to change that trans over to fit an a body. Unless it’s free you are better off waiting. In my experience a body trans can be had for a lot less than a B or E body A833.
@gzig5 @AJ/FormS @Professor Fate @Alaskan_TA
Thank you all for your advice.
I really appreciate it as someone who is still new to the mopar world. ill keep my A230 until i find a good deal.
AJ i have a 5.9 magnum swap with edelbrock LA heads and a more aggressive bumpstick(110LSA, 222/229 duration/ 509/512lift) so your post gave me a lot to think about. i really appreciate that you took the time to write such a comprehensive response out.
Thank you all for your advice.
I really appreciate it as someone who is still new to the mopar world. ill keep my A230 until i find a good deal.
AJ i have a 5.9 magnum swap with edelbrock LA heads and a more aggressive bumpstick(110LSA, 222/229 duration/ 509/512lift) so your post gave me a lot to think about. i really appreciate that you took the time to write such a comprehensive response out.
AJ/FormS
68 Formua-S fastback clone 367/A833/GVod/3.55s
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The 5.9 is a higher compression base to start from. The alloy heads would allow you to run a massive pressure boost, that with your modest cam, would make waaaaaaaaaaay more torque than your chassis could possibly handle in first gear, and waaaaaaaaaay more power than your tires could handle below the speed limit (in Manitoba being 65).
I know this because I had a 223/230/110 cam in a 360LA at 11/1 Scr/185psi pressure.
So, if you ever take yours apart for freshening...... pressure is funtastic.
While the gears are far apart in that A230, in your case you will hardly notice, because your engine-combo is right for it. Your first gear is a lil deeper than the A833, and your Second is a lil shallower. This is a great thing for your combo. Third is a lil far out there on the A230, but for a streeter, so what. Nine times out of ten, if you had an A833, you would be skipping third and shifting second to fourth anyway. If you can hit 60 at the top of second, where are you gonna go with an A833, that you are not already going to with your A230?
That lil 222 cam normaly power-peaks at around 4900 with iron heads, but with the Eddies and the 110LSA, you should be able to stretch it out to 5500 before the powerloss is noticed, I used to stretch mine to 7000,lol; Heck the tires were still spinning in second gear, so what's the big deal, I said.
Anyway, at 5200 say with 3.55s, your MPH with the A230 should be around 64mph so that's perfect. And you can stretch that to 70/75 if you have the valve springs to go there. So then you would shift to Direct in your A230. And if you had an A833? Well Direct as well, having skipped third. You already have the perfect trans for your combo, on the street. The only time an A833 would help you is for drag-racing, and/or, you might pick up a lil ET between 64 to 84mph .
I gotta tell you, my favorite combo was that size of cam, in my case 223/230/110 Hughes. in an LA 367 cuber. With hi-pressure, the bottom end was killer. The midrange was fierce, and the slow-down didn't come until waaaay past the speed-limit. And of the three cams I have run, that was the only one I could get into the 30s mpg,point to point, in steady-state cruising;Not a typo. I was very sad when it began dropping lobes right after an oil-change. Loss of ZDDP got it. My 68 Barracuda is at 3650 me in it, So I can only imagine what it's like in a Duster.
I ran that combo with a lot of different rear gears, a lot. My favorite was 3.23s, but it trapped better on paper with 3.55s, in the Eighth-Mile, so I have been running those ever since 2004ish.
BTW,
for a time, I ran the OD box with ratios of
3.09-1.67-1.00-.73od. splits of .54-.60-.73, compare to yours
2.95-1.83-1.00, and splits of .. .62-.55
Notice the A230 has a tighter 1-2split; just what you need, and a wider 2-3, just fine if yur geared right in second, who cares.
That od-box sucked, no matter what rear-gear I ran it with, and I tried almost all of them,lol.
It sucked even more after I replaced the failed 223 cam, with a 230/237/110. That box is currently sitting on the shelf with a lotta other parts that didn't work out for me,lol.
Happy HotRodding
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Scrap price from what I see.
After 1968 B Body trans minus side cover and input shaft and gear. Guessing it is a desirable 308 bearing main case and tailhousing. 1964-65 B Body Hurst shifter mounting plate and 1-2 and 3-4 shift rods. Gears are probably good with gear oil/dust rust preventative, hopefully mainshaft is good. Does he have the side cover assy? The rest, you would have to inspect. Not sure on a fair price, let him give you a price.
Alaskan_TA
Well-Known Member
You already have a wonderful transmission in your car, so no need to shop for a deal. ;-)
The A-230 was the stock transmission available with a lot of 383 HP cars, so why bother spending money on something you do not need?
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