904 Slant 6 torque converter

[khaley71]

It's time to rebuild the 904 in my 71 Swinger. The motor is a stock 225. I have a couple converter questions. First: is there any difference between a converter for a slant 6 and one for a V8 904? I know later converters can be lock up and non lock up.
Second: I swapped an 8 3/4 rear with 3:55s in place of the 7 1/4 with 2:76s. Do I need a converter with a different stall speed?

 

[KickDown]

Well to be honest I wouldn't even consider using a used TC on a freshly built transmission. If there is any amount of crap in the TC (and there will be) it is very difficult to remove it entirely without cutting the converter open. Dont forget to thouroghly flush the cooling lines. You can do this using brake cleaner & compressed air.

 

[khaley71]

I should have given more info I guess. I wasn't going to put a used converter in my rebuilt trans. The main reason I was asking about the higher stall speed and difference between slant 6 and V8 coverters. I came across a local deal on tci sizzler converter for a 318/904 that's in the 2200/2300 stall speed range. I have been doing some research and it seems with my 225s low power the converter might be to much.

 

[transman]

1968 and up 225 or 318 engine with a 904 non lockup used the same converter, and depending upon the vehicle it was in, could be either a low stall or a high stall. If your present converter is a stock factory unit, it will have one of two stickers on it: a tri-angular one that says "lo stall" or a roundish one that says "high stall". In 1978, Chrysler started with the lockup style converter, and again, the same converter for both the 225 or the 318, and once again, depending on the vehicle, either a "lo stall or a " high stall". The one thing that I can't tell you, is how much the stall speed is in either converter, nor does my catalog tell me.
Forget the TCI converter. You've already found out that it will be too much stall for your 225.

I hope this helps.

 

[khaley71]

It

1968 and up 225 or 318 engine with a 904 non lockup used the same converter, and depending upon the vehicle it was in, could be either a low stall or a high stall. If your present converter is a stock factory unit, it will have one of two stickers on it: a tri-angular one that says "lo stall" or a roundish one that says "high stall". In 1978, Chrysler started with the lockup style converter, and again, the same converter for both the 225 or the 318, and once again, depending on the vehicle, either a "lo stall or a " high stall". The one thing that I can't tell you, is how much the stall speed is in either converter, nor does my catalog tell me.
Forget the TCI converter. You've already found out that it will be too much stall for your 225.

I hope this helps.

I appreciate it and yes it does help. My main concern was with the gear swap and stall speed. To the best of my knowledge the converter is the factory original. When I pull the trans I'm going to have a local shop do the converter. From what I have read I think I'm just going to use my stock converter. I can handle the trans rebuild. Again thanks for your help.