New torque converter suggestion needed

No doubt. I know that. You know that.
The reason I asked is this: does the owner of the car or the person working on it know?
 
I bought a “69 383” equipped ‘82 Dodge truck, turned out to be a 400 in reality. I sold it as a 400. Two months later it’s on racing junk, as a 440! Same engine. See where the confusion comes in to those not in the know?
 
On the original question, as it's a '68 383 and you want a little more from a dead stop nail-it, the FIRST upgrade from your allegedly stock converter would be for the "1968 Road Runner 383 4bbl" application. Easy as that. Forget about the stall speed specs and such, go with an OEM application that works and won't be too loose for normal driving, but you might need a little more steady throttle foot to no lose mpg under 55mph.

As for the leak, the ONLY places where a front of the trans leak can happen is where the front pump gaskets are (seal it to the trans case), the front pump seal (which seals the snout on the converter to the front pump housing (a lip seal), and/or the converter snout itself (as the seal might have worn a groove into it, from normal wear and tear).

IF they put that "reseal and gasket" job to one of their less-experienced employees, which might indicate just how easy that job might be with the right tools and equipment, then they are probably suspecting something wasn't done completely "right". Hence the free labor or "Shop Warranty".

In one respect, you might have budgeted for some items, but spending money unwisely is just the same as "over-budget" or "down the tubes", to me. I know it can be difficult to chose a repair shop that will even work on any older rwd car, BUT there should be some car clubs in your region which you might join and network with in order to find a good (don't like that word "reputable" as that can mean different things for different vehicles) shop. EVEN if the shops might be an hour away from you, it can hopefully be worth the effort to get to them.

Not to say that you didn't do some good research to get to these shops, BUT perhaps the right questions weren't asked? Perhaps expectations are a bit too high? Not sure. In my own perspective, getting a job done to the "OEM Production Standard", in parts and labor, should be the minimum standard you request of them. If they don't feel they can achieve that, kindly thank them, say "Let me do some thinking . . .", and leave. No drama.

The OTHER thing is to see for yourself where any issues might be BEFORE taking it into the shop! Don't completely rely upon what they tell you might be wrong. Do YOUR own research first, so you have a better idea of what's involved and can ask questions BEFORE anything is done.

Seems like I recall you saying the prior owner stated the engine had been rebuilt with "a little better cam", of undetermined specs? Will it still idle at 550-600rpm in "N" and go into "D" smoothly or does it need more rpm to idle smoothly in gear? Just curious as the term "a little better" can be "just a bit" or "more". Or it could be an aftermarket cam that might have larger numbers than the stock cam, but really isn't much "better" at all. Which is why I mention the idle characteristics as a guide.

Do NOT take it as a Badge of Valor as to how much you might spend on this car. Spending wisely and effectively, prioritizing as you go, can work better with better results. Once you find a mechanic that'll help you learn about the car, how and why it works as it does, that will take pride in helping you as he enjoys helping you along, that's the one you need to stay with. ANYBODY can take your money and such, but the one who might take less and give you more (education in the process) to make the car work better, is probably one to patronize. I've seen "good mentors" over the years and they are usually the ones you might overlook, but can have great knowledge they can pass on. You just have to find them, but they are there.

Enjoy!
CBODY67
 
And The guy with the 450 HP engine and a B&M 2500 converter? That works great on his application. Have a look at his set up.
That justifies his converter selection.
This^^^ What is your upgraded cam? Stock bottom end (crank, rods and pistons)? Intake? Rear end gears? We know the carb, and stock exhaust manifold if I remember correctly. That all determines the convertor stall speed you need.

As for the shops so far, I'm with the other on finding someone who knows old cars and/or had the skills to work on them properly. I've been fortunate enough to have had people there to help guide me through the things I didn't know, and the only mechanics that fixed my cars were ones I worked with. I got lucky I suppose. After that, I picked it up on my own, and still try to do everything I can by myself. Time is always an issue, but it's always nice to make a little progress on the car while still driving it.

Good luck with the trans leak, I hope the situation works itself out with little excitement.
 
Don’t feel bad about this. All rebuilt transmissions suck. Nothing beats an unopened original. I remember back in the day nobody would touch a muscle car with a rebuilt engine or trans. Everybody wanted low to midrange mile unmessed with cars. Lots of shady “ring jobs”, “band adjustments”, etc etc went on back then. Automatic transmissions when rebuilt either work or cause trouble but they’re never as good as new. You’ll get thru this and don’t feel bad I’ve had family friends rebuild transmissions for me that crapped out. I only bought 4spd cars for many years to avoid your very situation. Lately I’ve owned more & more autos and I’m about 50/50 at being satisfied with the repair and being screwed. I’ll tell you one thing I’ll never install a carry out auto trans again. Warranty on the trans is nice but the install labors always on you. I put 4 in my ‘71 Torino before my buddy got it right. I did get pretty good at bench pressing phord transmissions though.

Hang in there bud.
 
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