Difference Between 904 & 727?

[moparsofcamelot]

Hey guys, I have a 64 Dodge Polara 500 with a 904 (decoded 1964). Although I put a 69 440 with a 6 pack in it. I have the long twin scoops that every Dodge/Plymouth had put on in the early 60s. Question is which one is better and why? The 904 or 727?
Thanks, MOC

[This message has been edited by moparsofcamelot (edited December 04, 1999).]

[DodgeMan]

Are you sure you have a 904. Chrysler never built a 904 that would bolt up to a big block. You would have to buy an adapter to get the job done. If the car had a big block in it before it has a 727 trans. I would check what trans you have again. As for the difference. The operation of the 904 is the same as the 727. The 904 is smaller, and the internal components are smaller. The 904 was designed for a lower through horsepower. The 904 was introduced in 1960 behind the slant 6, and has been used behind small blocks in the A-998 & A-999 variations. Behind a big block you should only be using a 727.

[This message has been edited by DodgeMan (edited December 05, 1999).]

[moparsofcamelot]

I got this worded all wrong. Let me be clearer if I can. The tranny is original 64 once behind a 383. I want to get rid of the ball/trunnion. There is all kinds of debate as to how. First let me tell what I beleive has to be done, right or wrong. I have the console shift. 64 also was the last year for ball/trunnion. To simply just get a 65 up shaft to slide right in it would have to be a column or push button, but because it is console I would have to get a 65 tranny and shaft. I don't think a later model tranny will work because of tailshaft unless it had column or push button True or false?
Thanks MOC.

[Thunderstruck]

65 is the last year of the ball and trunnion joint, my 65 Cuda has one. 66 is the last year of the cable shifted 727 nd the only year they had a regular u joint setup in the front. So, you need a 66 trans and a driveshaft to work with it. Now, I don't know why you want to replace this, I had a built 413 in a 64 300 that'd do the quarter in 12.95 and the 727 handled it fine. So I wouldn't worry about durability. Now, if your current trans is shot I'd just bite the bullet and go with a 67 and newer 727 as they have a lot of upgrades the 66 and older ones don't. Granted you can add this stuff to the older trans but the 66 trans can be hard to find. Try DrMoPar440@aol.com it's an all Mopar boneyard and he's probably got what you want at a reasonable price, he's in TX, near Austin so I don't know what shipping would cost.

Steve

[DodgeMan]

O.K. I believe see where your going with this. You have a cable shift trans. Right? All you want to do is get rid of the flanged output shaft? There is 2 cables on this trans, one for the shifter and one for the parking brake. You need to find a "65" trans. I had a "65" Coronet, and it had a normal out put shaft on the transmission. I would bet that any "65" 727 would work. I wonder if the output shaft alone can be changed. I will look into this and get back with you. I still have parts to a cable shift 727. Unfortunately it's not where I am at, and it will be the weekend before I can get to it.

[moparsofcamelot]

DodgeMan, I guess I got my wording right. That's exactly where I'm going. The trans is easy for me to get. For that matter probably any old mopar part. It was never a question of getting it, just a question of would it all just simply bolt it. You hit it on the nail.
Thanks, MOC