White92FoxGT

I have an aod with 4.10's and i think the tranny has problems in shift points. Anywhere above 15 mph it won't downshift to first. Anywhere above 35-37ish sometimes it will and sometimes it won't downshift from 3rd to 2nd. And finally when in od it takes a good 1.5-2.5 seconds to downshift into 3rd. Is this just an adjustment problem or something way larger? Is this normal with 4.10's?

nitrous_bob

thats normal w/ aod's

shift kit will improve the shift lag, but you'll need a manual valve body to fix that problem of not downshifting , it's the rpms not the speed

notice where you upshift from 2-3 at ...... about 3000

thats just where your starting to make power