2004r CZF shift firmness?

I would buy a gauge, your pressure may be low. Mine shifted like you are saying. Trans go kit with a billet servo. I swapped pumps on the trans since the stator shaft was heading south. For some reason with the 13 vane pump, Trans Go high rev slide spring and .500" boost and bigger reverse boost valve, my pressures in drive sucked. All the other gears were OK. I had 185 psi, I added a .550" boost valve and brought it up to 215 psi. Light throttle and gramma would be OK with it, floor it and firm shifts come my way. You should have the good line bias springs and the smaller governor already for higher part throttle shifts.

There is a square head plug near the cooler lines. You need a gauge that goes to around 300 psi.

83MonteCarloSS said:

Thank you. I'm hoping this thread will help some others with the same questions. I will update the thread once I get some readings.

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I don't even own a 200-4R and I'm watching this thread. I like to learn. Keep us posted.

Are you getting full pull at full throttle?

You don't say what you swapped it into other than it is behind a 305 so I'm guessing it went into the 83 MCSS. You don't say how far into the trans you want to go so I'll start with some stuff that requires dropping the pan. First as suggested above make sure the tv cable is pulling the vb tv valve all the way out when your helper applies the throttle WOT. Make sure you have the CZ in paint on the vb.

If you are wanting more and aren't afraid to drop the vb you might do some research on which hole(s) to drill larger in the vb plate. with this you should be careful and only enlarge them a little bit as it is easy to go bigger. Making the hole smaller not near *ss easy. Also as menetioned a larger boost and reverse boost valves and a 700r4 spring in the pump will get the internal pressures up. While you have the vb out you can do some spring swapping to help with shift firmness.

I have some links I send to people who are interested. Let me know and Ill pm them to you.
If you have more questions I'm happy to try to answer them. Let me know and i will pm you my number. I text or if I have time am glad to try and talk about it. That said I'm not a guru, just a diy guy that did an inordinate amount of research before I assembled a 2004r for my ride.

Let us know how you do.

83MonteCarloSS said:

Thank you. Read some on that before. I kind of forgot about it lately. I will buy a gauge and check the line pressure before doing anything else. Next question is what and or where do you insert the line for the gauge.

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There is a 1/8" port on the driver side above the shift input shaft. Careful with hot exhaust and your hose. Trans fluid will burn so you don't want to be spraying it on the exhaust.