FMX will not engage
Ok guys I have bought a vehicle cheap, non running. It has an FMX from a mid 70 torino. I dropped in a built 351w. I also did my own rebuild on the transmission. It was just tha basics, new disks, metals, front band, vacuume modulator. I reused the TC. I did the band adj per the haynes manual.
I was told that since I rebuilt it that I could run Dex/Merc instead of the Type F, so I did.
My issue is that the trans will not engage in 1st of reverse. Move the shifter through the gears and the RPMs don't even drop. Now with the trans in park, I rev the engine to about 3,500 rpms, let it come back down to an idle and pull it down into gear and it will engage. When shifting from R to D it takes about 3-4 seconds but it runs I can drive it around the block When I stop at a stop sign sometimes it doesn't want to go back to 1st.
I'm at a loss guys. thanks in advance.