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I think it's ok if the Mopar Posi is behind a 727 Powerglide or a Turbo 904.

Shopping around for one of these. It looks like they run damn near $1000 which is a bit more than I would have guessed. It's starting to make me think about how much I really value my feet. :D Which one would you go with? Do they all cost this much?

Thanks for all of the opinions and thoughts. I learn plenty from the off topic gassbagging so I’m certainly not going to complain.

Looking for opinions/experience before I take a flying leap at this and live to regret it. Relevant info- 408 stroker, upgraded A904 (with stock 1973 ratios), 2600 rpm converter, 26” tall tires. 8.75” axle with 4.10 ratio. Currently, 40mph comes at just about 2k rpm. I love cars that can...

That all makes sense, especially in the context of a class where every advantage counts. I don’t doubt that dollar for dollar, a 727 is stronger, at least at the lower investment level but if I was in a position to compete in any non bracket racing class, I would be inclined to go for the less...

Yikes. If your original intent was to help, thank you. If you are here for something else, and it seems that you are, please feel free to do it without me.

What does that have to do with anything?! You seem to have something to prove here. I have no interest in standing in the way of that. You're literally fighting with yourself. Just because I'm participating in the discussion doesn't mean that my identity and self esteem has anything to do...

So you got nothing? I honestly thought you had some kind of basis for your opinion. I'm not being sarcastic when I say that. Given that, why you have a problem with the cut/paste numbers? I pasted them in response to your question and provided in context, what I found regarding the common...

Not sure if you read what I wrote but personally, I am not accepting Car Craft's numbers as gospel. Ok, mister relentlessly persistent. Please share your data. If you have data that informs your opinion or any hard information at all that contradicts what has been quoted from the article, I am...

LOL...OK. I can see that you know what you are talking about.

They really do have to follow a lot of stringent standards these days. Usually that just costs more money and makes cars less fun but honestly, I can't say that it's a bad thing overall. Can you imagine if the population today was driving the cars of the 1960s with leaded gas, 10-12mpg, no...

Yep. I agree with pretty much all of that. In my personal opinion, the chance to shift our own gears is just one step farther. For some people that part doesn't matter as much or maybe they prefer their autos. That's fine with me. I'm sure not trying to tell anyone they are wrong for what they...

My distaste for autos is largely because they have taken over the automotive world and the experience of rowing your own gears is getting harder and harder to find. When it comes to drag racing, the advantages of automatics are significant. Quicker, less abusive on the rest of the drivetrain...

Maybe so. The common wisdom used to be that the A904 is reasonably durable, weighs 35lbs or so less, and takes notably less power to turn than the 727. If your motor/traction/application was beneath some arbitrary threshold, it made zero sense to buy a 727 and rebuild and have your driveshaft...

I’m pretty sure you could call up TCI or one of the other companies, tell them your setup (they may ask for spec on the engine, cam, induction, trans gears, final drive ratio, tire size, etc and how you want to drive it) and they would give you something in the ballpark that would work well...

So I can say whatever I want about CudaFactHackJob and he won’t see it? :D Joking aside, I really do appreciate the folks who have provided some helpful info here. Im not sure I’m better equipped to preserve the functionality of this slush box but I definitely learned a few things.

Thanks to all. So far, this is very encouraging. Are these comments all assuming the A904 in question is built to a spec? How would the conversation change if it was a stock unit? This trans is the one that came in my ‘73 318 car. The car is a ‘73 Sport with a handful of weight reduction...

My new engine puts out 450+hp/520+lb-ft at the crank. I’m planning on proceeding with the A904 but I understand this is close to the generally accepted safe range for this unit. What is the typical failure mode for these transmissions? When do they typically suffer their failures? I always...

I’m daydreaming about a conversion kit...Brewer’s performance offers a complete kit and it looks like Passion may have most of the parts too. I’m really at square one here, hoping for some wisdom regarding the A833. I’m going for backroads driving fun...which probably would favor closer...

MattyP, Spring perches and wheel backspace/offsets are the only concerns. It sounds like you've done your research and you are ready to go... ...I mean that B-body rear end is totally useless and I'd be happy to take it off of your hands and scrap it for you. :D :D Check out @72bluNblu 's...

Damn. If this requires changing the spring, I'll have to write it off as a tax on ignorance and leave it be. I don't foresee pulling the transmission again any time soon. I'll double check the linkage...I did my best to adjust it as you described but perhaps this situation is an indication...

I'll be honest. I love manual gear boxes and I'm fairly clueless about slush pump transmissions. I have great faith in the honored Chrysler Torqueflight...so if I can't row my own gears, this is the transmission I would pick. Anyway, If this is an ignorant question, I beg your kindness in...

I've been spending every free minute of my life in the garage lately and I'm hoping to be ready for some autocross before the end of the season. Someday I will have the resources to swap in a proper manual box but that Silversport T56 swap that I'm drooling over is years away...so for now, it...

I've been spending every free minute of my life in the garage lately and I'm hoping to be ready for some autocross before the end of the season. Someday I will have the resources to swap in a proper manual box but that's going to take me years to save up. So I still have some unanswered...

$1500 crashed and bashed, right?

Are you thinking about swapping in the independent rear suspension? That would be a very cool project. I suspect that you could run shorter half shafts if you needed to narrow the track. Looks like you Would have to narrow it quite a bit. This link shows the rear track to be 63.1”. I’m...

I'm daydreaming again...a few questions on my mind: Has anyone done a T56 swap yet? Is it that much better than a TKO 5spd? What are the hard parts of this job? Is any welding (mounts, floor, etc.) required? Can this job be realistically done with ramps/jackstands? I have pulled/installed...

So here's a thing. First, I have a few hundred miles on the TrueTrac now. There seems to be a minor vibration going on but I also changed the whole suspension and driveshaft at the same time and I'll be sorting things out on that for a while yet...not ready to blame the Truetrac yet. Plus, I...

I dind't realize that this was universal. I've certainly experienced this too. Does this present a risk of damage?

It definitely sounds like the problem is with the linkage which should come as very good news, IMO. I don't see how the console being loose would be to blame as the shifter is secured through the mounting legs. First, I would remove that set screw (put it in a baggie and bring it with you to...