Check your 40+ year old NOS bulbs.
They are really good for a nut and bolt OEM restoration, but newly manufactured bulbs have been improved over the years and have improved materials and bulb life.
The bulb socket that snaps into the taillight housings are the ground. You should add at least a couple of ground wires to the bulb sockets and just use a sheet metal screw into the body brackets somewhere.
Number one cause of harness problems is the grounds.
Also perfect time to install some...
Good thing you checked, obviously the manufacturer put the timing mark in the wrong place!! Ha !
Or the cam required you to retard the timing for more top end !
I hope you fixed it and degreed the cam properly.
To me, when it comes to engines.
The word " Rebuilt" is the most misleading word in...
I would also recommend that you change the 4 mounting screws to anti theft type.
Only takes a few seconds with a cordless drill/ screw driver to steal your cap/cover.
The fuel cap cover was only Factory available on 70-71 cars.
Naturally it will attach to 72 -up cars but was never an option.
Big emission changes started in 1972 across the board.
Safety changes starting in 73 like 5 mph bumpers on all passenger cars.
Proper transmission fluid level In a 904 or 727 is on level ground.
Warm up to operating temperature.
Set parking brake.
Place transmission in Neutral.
Proper level is 1 pint below full.
I see that you have an aftermarket pan.
If it is deeper than the original pan, make sure you have the...
Agree with above. Educate yourself. Excellent resource books also get the Factory Service Manual for your car. Transmission section goes through the FactoryService procedures. I will attach a link for free Manuals and other Mopar info.
Save the link: -> Resource Library – MyMopar