[KEV]

Alright fellas,

New converter is in and I decided to drop the trans pan and try to see if I could fix a problem. The problem is this (and I had it before I put the new converter in) When I put the car in park, if I am on a grade, the car will start to roll back and make a clicking noise. Like something is trying to grab but it doesn't. This only seems to happen when on a grade but I don't like it and it makes putting the car on the trailer a little more exciting than I care for.

I have taken the shifter cable out and made sure that the linkage on the trans is all the way in the right position. I adjusted the cable so that it fits in there perfectly. No real fwd or backward tension on the mounting bracket.

Any ideas? I am not very good with transmissions. I can take them out, replace the filter and that is about it. It has been freshly rebuilt (Maybe 20 passes on it)and I really trust the guy that did it. (you out there old boy???) Just thought I would take care of this while I already have transmission fluid all over the garage floor

Thanks for the info guys.

Kev

[KEV]

Alright fellas,

New converter is in and I decided to drop the trans pan and try to see if I could fix a problem. The problem is this (and I had it before I put the new converter in) When I put the car in park, if I am on a grade, the car will start to roll back and make a clicking noise. Like something is trying to grab but it doesn't. This only seems to happen when on a grade but I don't like it and it makes putting the car on the trailer a little more exciting than I care for.

I have taken the shifter cable out and made sure that the linkage on the trans is all the way in the right position. I adjusted the cable so that it fits in there perfectly. No real fwd or backward tension on the mounting bracket.

Any ideas? I am not very good with transmissions. I can take them out, replace the filter and that is about it. It has been freshly rebuilt (Maybe 20 passes on it)and I really trust the guy that did it. (you out there old boy???) Just thought I would take care of this while I already have transmission fluid all over the garage floor

Thanks for the info guys.

Kev

[Ray Cox]

call Paul at TTS to make sure, but I think Park is a manual pin or part that can brake but wont affect the rest of the trans functions

[Cliff R]

Kev, where ya been all winter? Pull the pan and take a look. Check the linkage on the manual shaft, double check the nut for tightness. There are also two bolts holding down a guide for the rod that actuates the parking pawl. Have someone move the shift lever and make sure you are getting full detent in Park, not much else to it.....Cliff

[KEV]

Well well well....There is my trusty tranny builder!!!

Cliff, I can not find your email and I do not have any of your phone #s any more. Please shoot me a mail.

Wondered what happen to you as well. Know your busy with the new shop but thought we were gonna get crack on a web site and such. Well I will save that for the phone call. I have got the pan off so I will look at that tomorrow.

[Cliff R]

Will do, I'll send my phone number in the note. The parking pawl deal is pretty simple, very little to go wrong there. Doubt if anything is broken, even so you have a lifetime warrantee!......Cliff

[KEV]

Ok fellas, here is the deal. The parking paw looks great. It is on the full detent. Here is what I think the problem is but am not sure how to fix. when I put the trans in park, it moves a lever back towards the rear of the car. This lever has a somewhat tapered end so when it moves toward the back of the car it gets fatter/larger. This then forces a piece of metal upward in the trans. This piecs of metal fits in between a gear with about 1/4 inch gaps in it. So if I am thinking correctly, rod goes back, key goes up into trans, hits a keyway and trans is locked! Right? It seems that the metal piece is not going in / up high enough. Once in park, I can still move it a decent amount (probably at least 1/4 of an inch upward) to where it will bottom out and lock in nice. There appears to be no up an down adjustment. I can also see that it has barely been catching as there are scuff marks on the gear it should seat into. Now the rod also has some side to side movement as well. If I push the rod closer to the trans (instead of toward the outside - toward the door side) it makes the piece go higher up in the trans. There is nothing to keep it there tho

How do I fix or adjust this?

Thanks again!

Still looking for that mail Cliff!

Kev

[TTS]

There is normally alot of slack in the park rod. There is no internal adjustment. The striker that is bolted to the case (2 bolts) is loose or is worn where the park rod cams up toward the pawl. The rooster comb may be worn at the park rod hole not allowing the pawl to fully engage. The park rod spring should be checked,(on the rod) if it's broken or out of position could be the problem. Otherwise it's external. These would be checks for a specific problem, no park. The shift lever hole in the rooster comb could be worn, but you would have a manual valve out of position as well.

[Half-Inch Stud]

I glossed over the replys to say: align the shifter to the Trans internal detent gating...in your case by starting with Park.

May risk loosing Manual reach into 1st gear.

HIS

[KEV]

Hey Guys,

Well TTS I am having a hard time understanding.... I looked at it again and have more questions...

1. The rod, it just kind of sits in an open type pocket? I can move the end with the spring on it about an inch side to side. Is this normal?

2. What function does the spring perform? The rod is just laying in there. I have no idea why there is a spring on the end of the rod.

3. Every thing looks in good shape, the rod just does not push the locking mechanism high enough up. If the rod was held in toward the center of the trans, it would be high enough.

Cliff, you ready to take a ride up here? This just doesnt make sense.

Kev

[Cliff R]

Kev, check your mail, I sent another note just now.....Cliff

[Cliff R]

Kev, I'm having trouble with emails, send me a note at ruggles@ecr.net......Cliff

[TTS]

The park rod spring allows the shifter to be fully positioned into park range when the park gear is positioned on a high tooth. If it is broken, the large end of the rod cannot reach deep enough to have park.

[KEV]

Cliff, got your emails. Will respond tomorrow and would like to stop down next week.

What I have found is this. I took the bracket out that holds the rod up. On it there is a little raised pad. Looks like a pyramid with the top cut off. Well this is showing some wear. TTS you said "The striker that is bolted to the case (2 bolts) is loose or is worn where the park rod cams up toward the pawl." I am thinking this is what I have found. You were all over it! Can I get a new one of these? Or can I just weld some material on it and grind it off flat/smooth so as to puch the rod up higher and the parking pawl up higher? Let me know your thoughts.

Thanks again for all the help fellas.

Kev

[Cliff R]

Kev, stop by and we'll steel some parts from one of my TH400 cores.....Cliff

[buwalda]

Kev,
I know this is probably a long shot, but.........
The 66 GTO originally had a two speed auto. The two speed's inner shift cable does not have enough travel to work with the T400/350. Are you using this cable & could this be causing your problem?

[KEV]

I finally got this worked out. Cliff welded a little material on to the pad and I ground it off to match the original shape of the pad. This has fixed the problem.

Thanks for the help guys.

Kev

[Cliff R]

Glad you got it fixed. Never saw that one before, there was no wear at all on the part, just needed a tad more material for full engagement of the parking pawl.

Have you got the GTO ready for the race in Va next month?......Cliff

[Dennis B]

Glad this subject came up. I have the same problem on my TH400 with a Quick Silvr shifter and cable.