"The 5.0 parts done. I just want to figure out the abs light. Lol. Only other gremlin I have is the 4406. It will shift into 4hi when in park. If in gear it grinds. Won’t go into 4lo"
ABS light? Pull abs codes, go from there. It is possible to delete the ABS system or get it working properly
4406 will shift from 2wd to 4hi anytime you wish
To get into 4low the truck must be stopped and in Neutral (not park)
This is assuming your 4406 t case linkage is adjusted properly (yes its adjustable at the small bolt on the tailhousing)
)If you are using the E shift 4406, then that is a different problem all together)
Some details about your swap, perhaps your own thread might be very helpful?