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47re shift points

4K views 5 replies 3 participants last post by  country_hick 
#1 ·
Hello all, I have a question about my transmission.
First off. It shifts great from 1-2 and 2-3. Right between 17-1900 rpm under normal acceleration. However from 3-OD it shifts very early IMO. as early as 30 mph. Lock up occurs around 48mph unless OD switch is pushed. Do these shift points seem normal ? Feels like so much wasted power slipping the converter from 30-50. Thanks for any input!

Btw I have adjusted both the tv cable and tps.
 
#3 ·
That sounds about like my truck give or take a couple mph. The only difference is the truck shifts regardless of whether I am taching about 1,3000 rpm, 1,500 rpm, or 2,100 rpm the same way.

The stock tc is about 65% efficient. A good aftermarket version is around 90% efficient.
 
#4 ·
Thanks for the response! That's what I thought. I took a video I'll upload of the truck shifting. I wonder what's causing it to shift early???
Thanks again
 
#6 ·
Your video is "currently unavailable" Did you accidentally make it private so no one else can see it?
 
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