727 Kick down issue.

[TWR]

I have a new development with my 65 Sport Fury. It seems to shift properly up through the gears and does not slip. Now if I am cruising at say 50 mph, and floor it to kick in the passing gear, it doesn't kick down into a lower gear. It seems to go into neutral until I let up then it goes back into 3rd gear. Anyone ever ran into that situation before? First time for me. Only thing I changed was my pan gasket was leaking and I had a new deep pan with a drain plug in it. I added the spacer and a new filter and put it back together. I can't see how that could have caused my issue. Is it an adjustment issue?

Have you tried adjusting the linkage at the left side of the carburetor?

 

[fury fan]

For reference, the 2-hole filter is for use with 65-older transmissions that had a rear pump in addition to the front one.
But as mentioned, gotta watch for alum case vs cast iron.

 

[Sixpactogo]

Update on my transmission dilemma. I ordered a new WIX 58658 filter that crosses over to mopar pn: 2466849. It showed up today so I dumped the oil and dropped the pan. I found out I had the correct filter with the two holes but the filter extension that came with my deep pan only had the one hole. I obviously didn't pay any attention when I put it together but I suspect it was what caused my lack of a kick down gear. I installed the new filter and the stock pan today. Will oil it up for testing tomorrow and let you know if it fixed my issue. Pretty sure it will. Here is a pic of what I found.

 

[fury fan]

Yes, the problem starting right after changing pan/filter was the major clue.

I swapped a carb 25-ish years ago and started getting flare on teh 2-3 shift. Knew it wasn't the trans going out, that it was carb-related, it was too coincidental.
I knew about hte KD linkage, but it was adjusted properly before, and this was just a carb R&R.
Took to a trans shop (a very reputable Mopar specialist). Told him I had put a new carb on and then this problem surfaced. Got quoted a $1200 rebuild.

Went to a different repair shop, also with a good reputation, working out of an old 2-stall gas station.
Told him the same story, and he opened my hood and adjusted my KD linkage. Told me to go around the block.
Told him it was much better but not fully correct, so he gave me an other adjustment, which worked fine.
Asked him how much I owed, and he shook his head and sent me on my way.

I don't remember if he had a cigarette bobbing on his bottom lip, but he sure should have.

When I got home and compared the reman carb to the original, yep, the throttle arm had been welded on and was about 30° out of position compared to the original.

The moral - don't go far and start digging too deep, dig around where you just were.

 

[Sixpactogo]

For reference, the 2-hole filter is for use with 65-older transmissions that had a rear pump in addition to the front one.
But as mentioned, gotta watch for alum case vs cast iron.

Not only that......It looks like the 65-66 alum 727's use the two hole filter and the later model 727 use the one hole filter. The parts houses apparently don't know that either since they show the one hole filter fits 1960-97.
All is well again with mine though. I went back to the stock pan and filter. Got my passing gear back and no leaks.........Yet

 

[413]

If it is a cable shift (1962-65) it needs 2 hole filter.

Linkage shift (1966 and newer) it needs a one hole filter.

 

[Sixpactogo]

If it is a cable shift (1962-65) it needs 2 hole filter.

Linkage shift (1966 and newer) it needs a one hole filter.

OK.....That makes sense to me.