NEED HELP JUST SWAPPED OUT 3.0 FLEX FOR 3.0 GAS INSTALLED MOTOR TIGHTENED BOLTS NOW CANT TURN ENGINE NOT A MECH SO PLEASE NEED HELP NOT SURE OF PROBLEMM

 

If it is an automatic transmission you may have broken the transmission, if torque converter was not correctly installed ON THE TRANSMISSION first, and you tightened up the bolts then you broke the front pump and trans is toast.

If manual then put trans in Neutral

Video on how you MUST install torque converter: www.youtube.com/watch?v=g7klzEV0kng

You can NOT install torque converter on engine, and then slide it into transmission
Big and EXPENSIVE, NO NO


There is no difference between 3.0l Flex and 3.0l Gas only engines, only fuel injectors and computer are different so the engines are interchangeable, so not an issue in your problem