[pepsiman]

i got an 1987 s10 blazer. 2 wheel drive 2.8 liter ....my transmission was acting up like it would run like 3,000 rpms or more and never shift ... so i parked it put on blocks and put a used trans in it. the trans i got is out of a 1987 s10 4 wheel drive. i took the shifter off and installed it on my blazer matched up perfectly drove it almost every evening now for a weak just down the road and it is doing the same exact thing as the old one . when you accelerate it doesnt shift gears. can any one help me please

i dont know but i wonder if this isnt something mechanical but electrical somehow? any help would be great