65 Valiant 904 no reverse.

[65Valiant225]

Hello, my 1965Valiant wagon with a column shift 904 trans that was rebuilt 2y ago with a rebuilt engine then the car sat. 6 months ago I started to finish up the exhaust, cooling, and some electrical stuff, during this time I ran the engine 20 minutes at a time and slipped into all the gears maybe 4 hr. of run time.
? Yesterday I dropped it to the ground all ready to go, and Reverse doesn't move the car, I feel a slight engagement. thank you.

 

[GTX JOHN]

Check you reverse band adjustment.
Check that linkage is fully into R position.
Often when it struggles to go into reverse but does
not it is a front pump pressure problem as it requires
more line pressure to go into Reverse than forward gears.

 

[Hellrats]

If you have all three forward gear it will be the, low reverse band... low reverse servo... or band strut.