i've got a 93 Z28 with the 4l60/700R4 trans(non-electriconic) and am currently in the proccess of puting in a shift kit. What do I need to do to change my shift points from the current 5000-5100 to 6200 RPM's?? I am assuming this can't be done through the ECU on my trans like with a 4l60E, am I correct?

 

???

 

I know it is done through the valve body, not sure of the specifics on the how to's of it on a non electronic trans., does anyone know more about this?

 

Wish I could help you, but you are correct that you don't do it through the ECU.

I don't know how to adjust the upshift points, but the firmness is adjusted with shims and stuff in the shift kit I think.

 

hmm... maybe i'll try and post this on another message forum and try to see if anyone else knows.

 

the guys on speeddensity.org might be able to help... I dunno.

 

You need a governor kit, weights and springs. B & M has one but there isn't a specific adjustment. You have to experiment with different weights and springs until you get the right combo for your car.

 

damn that sounds like its a B1TCH to do, wish there was just a method of calculating the weights and springs to get a shift point... 4l60E sounds like it would be really nice right about now..

 

i'm in the process of reading about the governor assembly.. where exactly in this govenor assembly located? does it require droping the trans. pan everytime you want to switch the spring and weight?

 

It's on the left side of the trans toward the rear underneath a press fit tin cover. On an F-body you probably have to remove the crossmember and lower the trans to remove the governor. It's not hard, just a pain to have to do it more than once to dial in your shift points.

 

I was under the impression that it was after the valve body, guess thats not too bad of a place for it, atleast I don't have to drop the trans pan multiple times... Thanks for the feedback, helps out a lot.