727 Shifts Down to 2nd at highway speeds

Austin Schlegel said

Hey guys,

I am having issues with my 727. The problem is that when I am cruising down the highway at around 50-60mph I am in 3rd gear then out of no where the trans will downshift and stay in 2nd for a few seconds then shift back up to 3rd. This happens often. I have been adjusting the kickdown back and forth but that does not seem to fix the issue.

I am wondering if the linkage is right for my set up. I have '74 360 with a Holley 4160 on top. Did that carb come with the 360 from factory? If not should I invest in a lokar cable setup?

If there is anything else you think I should adjust/check please let me know.

Thanks for any help

Click to expand...

Start with the chrysler throttle braket that bolts to the holley to attain the correct ratio of travel. Set it correctly....
Just seen the pics... okay... to simply test this.. get a nut and bolt.. stick it through the slot on the kickdown at the throttle bracket...tighten nut/bolt up near the kickdown pin on the throttle so that it hits and pushes the sloted kickdown rod back as the throttle is opened. Its should be all the way back at wot. Check your fluid level. Next time you have the pan off... stick the dip stick in and mark it right at the edge where it goes up into the case/tube. Then put the recommended fluid amount and compare the mark to the fluid line.
After that...then check the trans for maladjustment