[sbryant]

I tried using a pressure gauge with the TV pressure port and that got me in the ball park but I've been fine tuning the TV adjustment by the "adjust and drive" method (which several of you said I would end up doing....). I have it now where the 1-2 and 2-3 shifts are not very harsh, but are not too soft. Before the thing would spin to nearly 3K rpm before the shift. Now it's in the low 2K range and feels pretty natural. The downshifts were also hellaciously harsh. Now the downshifts are noticible when slowing down (I can actually feel it slow the car down when the 2-1 downshift occurs), but the thing that is bugging me is the 3-4 upshift. If I keep my foot in the gas a good bit, the 3-4 shift is firm but not too firm. If I shift manually, the 3-4 shift is firm but not too firm. But if I take off slowly (like in normal around town traffic) the 3-4 shift seems like it occurs a little higher than it should, and is very harsh. I have a 2400 RPM stall converter. Would that cause the harsh 3-4 shift when accellerating normally? I've got a B&M Transpak to put in the tranny, but I know the shifts will be firmer and I dont' want the 3-4 shift to be so firm it breaks something (I've been told by several people the OD parts are the weakest link in the AOD). When the 3-4 shift happens now when I accelerate normally I hear what almost sounds like a clunk, and I'm pretty sure it would chirp the tires if it were a little harsher (like after the shift kit is installed...). If that isn't a problem I'll just drive it and enjoy the firmness, but I'd rather not break anything. For the past couple of days I've been upshifting manually so I get the normal 3-4 upshift. What do you guys think? Thanks /forums/images/icons/smile.gif

Shane

 

[johnpro]

I have the B&M Holeshot 2400 converter in mine, so probably have the same stall converter as you? I also have a B&M Transpack in mine.

It sounds as though, you may already have a shift kit in yours. I hear that same "clunk" at certain RPMs when shifting into 4th. It usually occurs when I should have already been in 4th, but held it there manually (either by keeping my foot in it, or using the shifter) and letting off on the accelerator as it's shifting into 4th.

I'd say just drive it and enjoy it. I usually downshift mine to 3rd (and let the tranny downshift the rest of the way) when comming to a stop. Otherwise, in overdrive it rolls so easy that I really have step hard on the brake to slow it down.

Normally I drive with the shifter in the 2nd position (1st, 2nd, and 3rd gear) and only shift to overdrive when I'm ready for it to be in overdrive, and shift back to 3rd for passing, as I often will get some slippage in mine in the 4th to 3rd downshift if I stomp it in 4th gear (I never rebuilt the tranny ... just bollted in the shift kit, and the tranny and away we went).

Personally, I'm not that thrilled with the Transpack. I wanted my shifts firmer than they are. It's great when SWMBO is riding with me, but I'd like a little more "chirp" in at least 2nd gear than what I can get. I think with the AOD I'll be putting in the '69 sportsroof, I may try the TransGo shift kit.

BTW, if I'm drving "normal" (which I very rarely do *LOL*) mine shifts to 4th at about 50mph. If I'm entering a freeway driving "normal for me", it shifts to 4th at about 80-85 *LOL* (shifts to 3rd at about 65-70).

HTH (sorry so long winded),
John

 

[bcombs]

Shane,

Johnpro gives pretty good accounting for your issues. All I can say is that my experience is a little different because I did not use a shift kit in my AOD when I installed it behind the Windsor in my 67. What I have noticed, after 3,000 miles of driving with the AOD, is that the OD tends to "clunk" when I let off the gas at lower speeds. For example: if I am driving around town and cruising at 45, when I have just upshifted to 4th under light acceleration...and then let off the gas, the downshift into 3rd is a little startling...I get a clunk. I agree with Johnpro that if I am going to drive around town and keep it under 45 it is probably best to keep the shifter in the number "2" position. That makes sense. Although I did not add a shift kit, I left the TV cable adjusted for firm shifts. But on the upshift into OD I get a fairly smooth transition. The firmness comes between 1 and 2, and 2 and 3. It is true that the OD transition is fairly important in that it is more prone to problems with heavily firmed shifts. I may be speaking out of school if the shift kits are supposed to give you that effect in OD. I don't know if this tells you anything but I believe I would leave things alone if I were you. The TV cable will drive you nuts if you move it just 1/8th of an inch...as I'm sure you found out!

 

[70Mach351]

I don't know if this will help you but here goes anyhow. I have an AOD with a 2600-2800 stall, 3.25 rear end with a OD delete switch. My AOD shifts hard enough to scratch in first, second and third with a 3.88 rear end. 4th is always a smooth transition going up but a hasrsh shift coming down. That is why I use a OD delete around town. The TV cable can only get you to a shift point you want at a given rpm, give or take slippage in the convertor. Leave it at a comfortable setting for cruising and manual shift for perfomance.