I need some help from any transmission gurus. My 400 trans won't kick down into passing gear. It will take off from a standstill and run through the gears fine, but once in 3rd gear, press on the peddle and "NO kickdown". I have checked the solenoid it's kicking in and out. I have a B&M kickdown switch mounted up on the intake and hooked up properly. I just put in a mild B&M shift kit ( I thought this might help the situation). Checked for all the balls in the proper place. Valves all working. The trans pulls great and very crisp shifts but no kickdown unless I pull it down into 2nd manually. Any ideas would be greatly appreciated :confused:

How does the tranny shift when left in DRIVE? Does it shift at low revs even at wide open throttle? If so, you might need to make a governor adjustment.

Yep it will run through the gears quick even if I'm accelerating. I'll give that a shot.
Thanks. Are there any other things it could be?

Rick give Jake a call....He can fix you right up with advice and parts if needed.

http://www.jakesperformance.com/Home_Page.html

:beers:

Will do ! Thanks Bill

Subcribing........... My 400 does the same. I have been manual shifting when needed.

After much deliberation I think I'm going to put a new governor in. I think the spring may be weak or broken and it's not a huge amount of $