• When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

A833 Overdrive on 493 stroker?

S

shone190

Active Member
Local time
12:49 PM
Joined
Jul 15, 2014
Messages
43
Reaction score
1
Location
Serbia - Europe
Hi guys,

what do you think about A833 overdrive trans with aluminium housing, bolted on 493 stroker (525HP/590ftlbs) in 1973 Charger?

This will be weekend/holiday car, no drag races off course
smile.gif


Will it hold this power or not?

Thanks in advance.
 
will be plenty strong enough

I have a 76 OD a833 behind my 505. but I did change the aluminium housing to a cast iron 68 one, but left all internals.
and I am trying to do some aurocrossing
 
Maybe I'm thinking of another trans then... it just jumped in my head their was a coarse and fine spline trans in one of my old mopars from long ago possibly in a 4x4 application..... I have a habit of mix matching newprocess stuff together and making stuff happen so I won't disagree maybe there isn't one
 
I would use it, as long as you don't get your foot into it at every stop light! The worst that could happen is you break it. Those trannies are only worth a couple hundred dollars or so.
 
I am thinking just like you, but I need to ask before buy one, I am from Europe so there is no A833OD on every corner :) :)
 
Passon Performance makes an 18 spline heavy duty setup for the A833. Basically gives it gearing similar to a 727 with an overdrive. Should be able to handle high horsepower. Check their web site for specs...
 
nevermind previous posts, it will be plenty strong enough trust me
 
benno440 said:
nevermind previous posts, it will be plenty strong enough trust me
Click to expand...

Oh yeah... Trust a guy that you never met when you are 5000 miles away. Will Benno fly to Serbia with a free replacement?
This trans was never used behind a STOCK big block. It was never factory installed behind even a STOCK 360! They are not strong enough to take repeated abuse. If you spent the $$$ to build a stroked big block, trying to save money by using the wrong trans is a bad decision. An iron cased unit will last far longer than the aluminum one, but only A and F body cars got the iron case OD. The trucks and vans use the same case and tailshaft as the B and E body cars but they are ALL aluminum except for the tail shaft and rear housing. YES, you can swap parts around but in reality, the best 2 choices are to either use a moderate axle ratio such as a 3.23 OR save your Euros for a better transmission.
 
Kern Dog said:
Oh yeah... Trust a guy that you never met when you are 5000 miles away. Will Benno fly to Serbia with a free replacement?
This trans was never used behind a STOCK big block. It was never factory installed behind even a STOCK 360! They are not strong enough to take repeated abuse. If you spent the $$$ to build a stroked big block, trying to save money by using the wrong trans is a bad decision. An iron cased unit will last far longer than the aluminum one, but only A and F body cars got the iron case OD. The trucks and vans use the same case and tailshaft as the B and E body cars but they are ALL aluminum except for the tail shaft and rear housing. YES, you can swap parts around but in reality, the best 2 choices are to either use a moderate axle ratio such as a 3.23 OR save your Euros for a better transmission.
Click to expand...

Do you happen to have any first hand experience on this topic? I do...if you are not planning on launching the car on sticky tires or power shifting it I'd run it. Obviously if it is not the best choice however in a pinch it will live IF you don't beat it like it owes you money. Also beware that in a heavy car this trans can be a clutch disc murderer. The 1-2 split can really stress the friction material if you are not careful. I ran around with a 499 (.590 solid cam, single plane, 850 Holley, 2" CPPA headers), a Hays B&B pp/disc and a 8.75 loaded with 4.30's for a few years. It was fun however I never shifted into high gear (OD) under power. My setup as also in a cast iron case with a 4.80 bearing retainer. I smoked a couple of Zoom clutch/pp combo's before moving to the Hays setup.
 
Richmond gear 5 speed is what you want... and thanks for confirmation on the 18 spline.... factory an 833 is weak.... but can be built to handle more...
 
Kern Dog said:
Oh yeah... Trust a guy that you never met when you are 5000 miles away. Will Benno fly to Serbia with a free replacement?
This trans was never used behind a STOCK big block. It was never factory installed behind even a STOCK 360! They are not strong enough to take repeated abuse. If you spent the $$$ to build a stroked big block, trying to save money by using the wrong trans is a bad decision. An iron cased unit will last far longer than the aluminum one, but only A and F body cars got the iron case OD. The trucks and vans use the same case and tailshaft as the B and E body cars but they are ALL aluminum except for the tail shaft and rear housing. YES, you can swap parts around but in reality, the best 2 choices are to either use a moderate axle ratio such as a 3.23 OR save your Euros for a better transmission.
Click to expand...

LOL, read his post its a weekend holiday car, no drag racing, IT IS PLENTY strong enough.
 
I have no financial stake in this. It just seems weird to build a 500 inch motor and put a 318 trans behind it. Why build such a big engine if you're only going to cruise it like an old lady?
The iron case units are surely a lot stronger. The aluminum case units can be modified to take MORE abuse than they were designed to take; namely having the countershaft holes drilled oversize and have steel bushings pressed in.
Benno: Glad you saw through my sarcasm...This poor guy is far away from here and I'm sure American parts are not so easy to find!
 
So you are confirming that you have no direct personal experience with this topic?
 
I'd stay away from the aluminum housing 833's period. The gear set is probably OK if you don't hammer it with sticky tires and use an iron case like Benno, but your best option is to get the Passon OD gear set if you want OD on the cheap. The aluminum case uses a floating countershaft for some reason (maybe be an expansion issue between aluminum and steel) so any repairs should be done with an understanding of what's going on or what's acceptable. The CTE of aluminum vs. steel is significant but at a couple of hundred degrees the difference is small.
 
I know this is an old thread, but i read this and laughed. Yes OD is in the 3rd gear location. Yes the tab is flipped to keep a proper H pattern, but the posters left out 1 detail. The ratio is changed with a completely different gearset unique to OD transmissions to where the gears in the 3rd gear slot area now a .7 overdriven set. 4th gear is a 1 to 1 ratio like a regular A833 close ratio, OD in 3rd gear slot is .7 OD. Granted this is not really ideal for a high performance application, but there are fixes you can do to the gearset to prevent it from binding and blowing up. I believe you can shim the cluster gear assembly so it doesnt try to force itself through the case, as well as pin the shaft so it doesnt try to allow gear climb.

The ideal solution is the passon A855 5 speed it gives you 4 close ratio gears with 4th being 1 to 1 ratio and 5th being .7 OD. Fits in the tunnel without cutting **** to get it there and is a direct bolt in. If you run the A833 OD box just dont drive it like a ******* animal and it will live.
 
I have an iron bell on an 833OD behind a mildly built 69 440 (unsure of cam but it lopes) in a step side truck.

No problem handling power but I spend a LOT of time in second gear, and the power shift is from 2 to 3 (somewhat awkward).

Depending on what axle ratio you have, first gear may become useless.

All that said, it's a BLAST to drive!
 
You must log in or register to reply here.

Similar threads

Runner 68
Pre-Oil or Not to Pre-Oil
2 3
Replies
53
Views
3K
thehemikid
thehemikid
dodgeboy440
  • Locked
FOR SALE A833 4 Speed “PP833-2499”
Replies
2
Views
3K
POMONAMISSEL
POMONAMISSEL
G
  • Locked
SOLD 4 speed A833 parts
Replies
4
Views
2K
kiwigtx
kiwigtx
ffgreg32
  • Locked
WTB Wanted 73 B-body bucket seat slider
Replies
6
Views
777
ffgreg32
ffgreg32
Doorkicker
RB Deck Clearance
2
Replies
21
Views
2K
pnora
pnora
Auto Transport Service
Back
Top