Hey guys so i swaped axels off my old truck to the new one and noticed its down shifting alot and bogging down alot but the moment u stomp on it it takes off like bat out of hell .The gears in the axles are 4.56 as some of u know do guys think its some thing related with the speed gear in the trany and also its not reading the right speed this the only thing i can think of since the old truck was a 5 speed 4.6 and the new one 5.4 auto any advice and help is appreciated

 

What size tires? It's probably just the auto Trans and the gears and tires are probably the speedometer problem.

 

315

 

Is ther a way to correct that