OD trans

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rumblefish360 said:
Thanks for being coy…..


Not…..
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Well, there's nothing fishy about the idea of selling a countershaft and single gear as the fix for the notorious wide-ratio OD dilemma...I think it's a bit of a stroke of genius. Those 2 parts could be manufactured and sold for under $300 (I have manufacturing cost experience) and each would probably sell with a rebuild kit, which is more revenue. It would give new life to all those OD boxes laying around and rusting. Of course, in 15 years none of this will matter because we won't be able to buy gas anymore anyway.
 
92b said:
So would you call it four speed with overdrive if it is a 4 speed transmission and one of the four gears is an overdrive? Or what would you call that?
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4 forward gears=a 4 speed. The Chrysler 833 transmissions were all called 4 speeds from Chrysler. They all carried the 833 designation, whether over drive or not. 833=4 speed. You don't call an A500 or A518 a "3 speed over drive". They are 4 speed transmissions. 4th gear (high) happens to also be an over drive.
 
Chris (CJ) Johnson said:
'71 340 with a '72 2:47. I'm not putting a Tremec in my Duster. I would have to go through all the frustration described above and cry like all those other little girls before I could be driven to have anything but an A833 (which is basically my point). I DO still want to know the register hole size on the Lakewood aluminum LK7000K bellhousing, however, because I'd like to know I could swap in one of the OD's just for giggles.

And you never know what new product might come down the road, like maybe a kit that includes the cluster plus a new first gear that brings 1st to 2.70-ish as an alternative to 3.09??? JP, you paying attention?
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So, if you could find one, this would work?

Brewer's Performance - Mopar A833 4-Speed Transmission and Component Specialists

You could also swap an O/D gear set in an early cast iron main case, tighten everything up and just slide it in your existing set up. Passon Performance already made a stronger gear set with O/D, closer splits, and an 18 spline input shaft.
 
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Chris (CJ) Johnson said:
Well, there's nothing fishy about the idea of selling a countershaft and single gear as the fix for the notorious wide-ratio OD dilemma...I think it's a bit of a stroke of genius. Those 2 parts could be manufactured and sold for under $300 (I have manufacturing cost experience) and each would probably sell with a rebuild kit, which is more revenue. It would give new life to all those OD boxes laying around and rusting. Of course, in 15 years none of this will matter because we won't be able to buy gas anymore anyway.
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Actually, I asked a simple question (Who is JP?) and received a reasoning answer to something else. Your in the verge of making no sense. Thanks for answering the question and helping out. Just exactly what the forum is for.
 
As best as I can guess who JP is, is this guy. Otherwise I too don't know JP.
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Chris (CJ) Johnson said:
Well, there's nothing fishy about the idea of selling a countershaft and single gear as the fix for the notorious wide-ratio OD dilemma...I think it's a bit of a stroke of genius. Those 2 parts could be manufactured and sold for under $300 (I have manufacturing cost experience) and each would probably sell with a rebuild kit, which is more revenue. It would give new life to all those OD boxes laying around and rusting. Of course, in 15 years none of this will matter because we won't be able to buy gas anymore anyway.
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Here's your fix. The Ultimate Mopar A-833 4-Speed Fix: Get Overdrive & Strength!

This solves the gear spread issue and gets you OD in ANY case. Passon sells bearing retainer reducers or the other way around. I'm currently in process of doing this myself.
 
plumkrazee70 said:
Here's your fix. The Ultimate Mopar A-833 4-Speed Fix: Get Overdrive & Strength!

This solves the gear spread issue and gets you OD in ANY case. Passon sells bearing retainer reducers or the other way around. I'm currently in process of doing this myself.
Click to expand...

Pretty sure the only way to get that setup now is to buy a complete trans for $3600. Can't find just the gears and cluster on his website anymore.

Funny thing is, with a 3.09/1:1 box you get similar results. Might not be as strong, but could be a fair amount cheaper. Just run a 3.23 rear gear and it is a close match the Hemi OD with 4.10.
 
Chris (CJ) Johnson said:
And you never know what new product might come down the road, like maybe a kit that includes the cluster plus a new first gear that brings 1st to 2.70-ish as an alternative to 3.09??? JP, you paying attention?
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Took me awhile to figure out what you were talking about. Guessing someone is looking into this in the background. Any ideas of timelines?

This would be a nice fix, only question I would have is the issue of strength for the OD gear. I've heard they can be kind of fragile. But I guess if someone is building a no cost stroker SB, they probably aren't running an old 833OD anyway. And I haven't broken mine, so no experience with an issue.

Either way, a 2.66 first gear swap on an A833OD would result in a similar trans to the Hemi OD Passon builds, but with a little taller OD gear. I could see it being a nice option. Has me curious.
 
DionR said:
Pretty sure the only way to get that setup now is to buy a complete trans for $3600. Can't find just the gears and cluster on his website anymore.

Funny thing is, with a 3.09/1:1 box you get similar results. Might not be as strong, but could be a fair amount cheaper. Just run a 3.23 rear gear and it is a close match the Hemi OD with 4.10.
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The gears are available separate. Just call Jamie. I am in progress of making the swap, now. I would've went with the OD setup, but I found a 23 spline non OD setup and have 4.10 already.
 
plumkrazee70 said:
Here's your fix. The Ultimate Mopar A-833 4-Speed Fix: Get Overdrive & Strength!

This solves the gear spread issue and gets you OD in ANY case. Passon sells bearing retainer reducers or the other way around. I'm currently in process of doing this myself.
Click to expand...

This has always seemed like the better way to go! Would love to see a story with before and after 1/4 mile times comparing stock non OD box to the Passon Overdrive. Even better would be a 3 way comparison using the '75- Chrysler OD box too. And while you're at it give us some highway fuel economy numbers as well.
If anyone has any of this info, please share it. The rules would have to include no changes to tire size, or final drive gear.
 
sccachallenger said:
This has always seemed like the better way to go! Would love to see a story with before and after 1/4 mile times comparing stock non OD box to the Passon Overdrive. Even better would be a 3 way comparison using the '75- Chrysler OD box too. And while you're at it give us some highway fuel economy numbers as well.
If anyone has any of this info, please share it. The rules would have to include no changes to tire size, or final drive gear.
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Lol. Sorry can't provide any comparison. My car was an auto to start, just want manual OD. This seemed the easiest as I couldn't find a factory OD
 
I completely missed it. What I am still confused by, is there another kit that just swaps the first gear and cluster gear in an OD? Because that (I think) is different than the Hemi OD kit.
 
DionR said:
I completely missed it. What I am still confused by, is there another kit that just swaps the first gear and cluster gear in an OD? Because that (I think) is different than the Hemi OD kit.
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I don't believe so. You can call and ask Jamie specifically. He might sell just those pieces?
 
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