allancl

I just completed a TPI to carb swap using the instructions from this site.
This is a 91 camaro 305.

Took it out for its first test drive. At first the tranny shifted fine.
After about 5 minutes or so the tranny does not shift up correctly.
Everytime I stip on the gas the tranny kicks down and the engine revs
to red line. When I let off the throttle the engine shifts up, but too high of
a gear.

The vacume to the tranny is connected correctly and the kickdown cable
looks to be connected properly as well.

- Lee

camaronewbie

Is this the 700R4 tranny? If so...

Did you adjust the TV cable (what you called kickdown cable)? Did you use the right brackets for correcting the TV cable geometry? Did you switch to a TV cable from a carbed car, or from a TBI car? What throttle/TV cable bracket did you use? Is it flexing when the accellerator pressed?

The TV cable can't just "look" right - it has to be right. There is very little room for error with the TV cable. The geometry has to be virtually perfect, there must be an adapter plate added to the carb linkage for it (assuming an aftermarket carb), and I don't think you can use a stock TPI cable, I think you must switch to a cable from a carb or TBI car.

DO NOT drive it anymore until you make sure that the TV cable is adjusted properly, is the proper length for this application, and is in the correct geometrical positioning. Otherwise, you could very very quickly fry the tranny.

Give us more info - what carb, what tranny, what brackets used, what TV cable used, is the throttle bracket used bending under accelleration stress, where did you locate the brackets, etc.

allancl

I did use the adapter plate on the carb and had to adapt the linkage plate.
The rest of your post stated the obvious, what I was looking for was adjustment information for the TV cable. You know the hard question.

Just thought that someone may have completed a swap and had details on how they configured their linkage. I am not look for quess work answers. I have plenty of those myself!

camaronewbie

Guesswork answers is about all you can really get here - we can't see what was done, we can't hear it, drive it, smell it, taste it, fondle it - all we can do is to make guesswork advisements on where/what to look at, and for what reasons. You can buy all the same identical parts as anyone else, bolt them all in the same holes, and have a totally different result, because of "adjustments" - as well as the individual and unique car demons everyone's ride has.

Tech article on swap

Another

Tech article on TV cable adjustment

If you feel it's the TV detent cable, then adjust it again. Try 1 click farther out, or 1 click farther in. There is no vacuum line to a 700R4, so I'm lost on that part. If you find any consistencies with any certain adjustments, but the problem is unresolved, let us know - maybe that'll tell someone something based on their experiences with their car demons. Good luck!

racerx469

This isn't related to your lock up torque converter is it? I know you need to install a switch for this when swapping out the TPI.

allancl

No it is related to throttle valve linkage setup. I did find a few sites that explain this setup very well.

92MaroRS

I just finsihed a TBI to carb swap and im having an issue with my shifting aswell. I put a holley 600 VS carb on, and the adapter plate for the TV cable, i am using the Edelbrock Throttle cable bracket and it always shifts at aprox 3500 rpm, wot, part doesn't matter. i've tried adjusting it but the cable does not 'ratchet' like the write up says and i can move the adjustment to anywhere and it will still act like this. any idea's?

allancl

I have the exact same issue. The write ups say that the setup just requires the ratio of the start position to WOT to be set correctly. However none of the brakets that I have see give the proper mounting distance between the Throttle cable and the tranny cable. At least no on the same bracket.

I can get the tranny to shift correctly when I bolt up the modified stock EFI cable bracket to the back carb stud. However this is to close of a mount point for the throttle cable and WOT is not possible. If I move the bracket back to the intake stud, I get WOT but tranny will not shift past 2nd, and no ratchet action.

My next try is to make two brackets. One for throttle & cruise frrom the stock bracket and one for the tranny cable that will be mounted on the carb stud.

All this being said, my car was just smashed by a falling tree in this last big east coast storm. It caved in the roof, so it looks like I will be converting it to a roadster!

92MaroRS

I compared the carb car's tv cable to my tbi cable and i think im gonna give the carb cable a try and see what happens. its significantly shorter

nelapse

iTrader: (17)

All the TV cables work fine. I use a TPI cable on my carb with no ill effects. as long as you have it spaced out to not have a super agressive bend you will be golden bro.

92MaroRS

okay, well, the carb version is the cheapest so, thats the one im gonna give a try, im pretty sure its the cable though, i can't think of anything else.