a500 problem

[djurmo]

Hi!
i have big problem with my 42rh trans, itr been rebuilt two times but its slipping and rew up when shifting from second and third gear, i first had a valve body with a transgo shift kit so i tried a stock valve body but its only get worse, i tried to adjust the kickdown cable but no effect , its in a belvedere with a stroked 360. what should i do, at moment i just want to set fire on the car and problem gone, what is wrong with the trans.
Thomas

 

[Hemi Rebel]

When does it slip? Every gear? Third gear? Do the rpm's flare on the 2-3 shift only or also on the 3-4 shift? Who built the trans?

 

[djurmo]

It only slips and rew up from 2 to3 gear but if i go with light trottle it shift ok.

 

[Garys1969RR]

Not sure on your trans, but on a regular 727, the kick down band is applied in second. Then on the 2-3 upshift, the high clutch applies as the K/D band releases. My 727 trans was doing the same thing, revving up when shifting 2 to 3, especially after warm up. It was the high clutch going bad. I believe it is the front clutch.

 

[djurmo]

It can be that, i taking it out in the weeken [third] time and let Another expert look at it

 

[Garys1969RR]

I tried fixing mine with a trans go kit, too. It helped a little. Those kits raise the fluid pressure which puts more force applying the clutches and bands. I finally put in a stock 727 with 50 K miles on it. Came off a 383 2 barrel motor, so it had easy miles on it. I Used the valve body with the trans go kit in it, and now it shifts instantly from 2 to 3rd. As well as 1st to 2nd.

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You can raise or lower the line pressure by changing the regulator spring on the valve body. And I turned mine in 4 turns from start position. That is the max amount they say to go. Usually reserved for serious street/strip vehicles.

 

[djurmo]

I tried fixing mine with a trans go kit, too. It helped a little. Those kits raise the fluid pressure which puts more force applying the clutches and bands. I finally put in a stock 727 with 50 K miles on it. Came off a 383 2 barrel motor, so it had easy miles on it. I Used the valve body with the trans go kit in it, and now it shifts instantly from 2 to 3rd. As well as 1st to 2nd.

- - - Updated - - -

You can raise or lower the line pressure by changing the regulator spring on the valve body. And I turned mine in 4 turns from start position. That is the max amount they say to go. Usually reserved for serious street/strip vehicles.

how do i do that

- - - Updated - - -

Or should i give up this Trans and go for a 727 but i want the overdrive it is 450 hp in the engine so maybe the a500 not going to last for the engine.

 

[Hemi Rebel]

Not sure on your trans, but on a regular 727, the kick down band is applied in second. Then on the 2-3 upshift, the high clutch applies as the K/D band releases. My 727 trans was doing the same thing, revving up when shifting 2 to 3, especially after warm up. It was the high clutch going bad. I believe it is the front clutch.

What gary said. There is a piston in the bottom of the drum below the clutches and steels. Likely the seals on the piston(has an inner and outer) are leaking pressure.

 

[djurmo]

Where can i find i image of that.